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CherryProject Intelligence

Meridian Hydropower Upgrade

CRITICAL: Tunnelling is suspended and the grid sequence is out of order
ProAs at 27 Apr 2026
Executive snapshot · Critical

Commercial operations is dated 15 Mar 2028, 47 working days behind baseline, because the tunnel boring machine is suspended at Section 3. The grid connection sequence is also out of order, which puts the date at 5 Apr 2028 if energisation comes first (modelled).

  • 1Decision needed by 15 Oct 2027: Unit 1 first synchronisation waits for the energisation approval, or the overlap is confirmed in writing.
  • 2The Section 3 tunnel drive (MHU.2.4.17) is 60% complete and suspended after the machine met a fault zone. A geotechnical variation is under assessment, an extension of time claim is active, and commercial operations is 47 working days behind baseline.
  • 3First synchronisation of Unit 1 (MHU.5.3.1) is dated 18 Oct 2027, 15 working days before the energisation approval on 5 Nov 2027. If the approval comes first (modelled), commercial operations moves from 15 Mar 2028 to 5 Apr 2028.
48%
Overall progress
51% planned
47d
Behind baseline at commercial operations
working days
+15d
Further slip if energisation comes first (modelled)
3% of time remaining · modelled

Schedule outlook

Approved baseline
7 Jan 2028
Corrected scenario (modelled)
5 Apr 2028
Variance
+62 working days

As dated, commercial operations is 15 Mar 2028, 47 working days past baseline. That date assumes Unit 1 synchronises on 18 Oct 2027, before the energisation approval on 5 Nov 2027. If the approval comes first, the date is 5 Apr 2028, 62 working days past baseline (modelled).

Critical pathZero or negative float from Section 3: TBM drive to Commercial operations date

MHU.2.4.17Section 3: TBM drive-47d float
→
MHU.2.4.18Section 3: ground support and segment lining-47d float
→
MHU.2.4.19Section 3: grouting and survey check-47d float
→
MHU.2.4.20Section 3 complete-47d float
→
MHU.2.4.21Section 4: set up and survey-47d float
→
MHU.2.4.22Section 4: TBM drive-47d float
→
MHU.2.4.23Section 4: ground support and segment lining-47d float
→
MHU.2.4.24Section 4: grouting and survey check-47d float
→
MHU.2.4.25Section 4 complete-47d float
→
MHU.2.4.26Section 5: set up and survey-47d float
→
MHU.2.4.27Section 5: TBM drive-47d float
→
MHU.2.4.28Section 5: ground support and segment lining-47d float
→
MHU.2.4.29Section 5: grouting and survey check-47d float
→
MHU.2.4.30Section 5 complete-47d float
→
MHU.2.4.31TBM breakthrough at powerhouse-47d float
→
MHU.2.4.32Tunnel final concrete lining-47d float
→
MHU.2.4.33Install steel penstock liner-47d float
→
MHU.2.4.34Penstock pressure test-47d float
→
MHU.2.4.35Penstock flushing, cleaning and inspection-47d float
→
MHU.2.4.36Install penstock instrumentation and monitoring-47d float
→
MHU.2.4.37Penstock complete-47d float
→
MHU.3.3.6Install main inlet valve: Unit 1-47d float
→
MHU.5.2.5Inspection and dry checks: Unit 1-47d float
→
MHU.5.2.6Insulation and protection tests: Unit 1-47d float
→
MHU.5.2.7Wet commissioning without load: Unit 1-47d float
→
MHU.5.3.1First synchronisation: Unit 1-47d float
→
MHU.5.3.2Load rejection and trip tests: Unit 1-47d float
→
MHU.5.3.7First synchronisation: Unit 2-47d float
→
MHU.5.3.8Load rejection and trip tests: Unit 2-47d float
→
MHU.5.3.13First synchronisation: Unit 3-47d float
→
MHU.5.3.14Load rejection and trip tests: Unit 3-47d float
→
MHU.5.3.15Performance and efficiency tests: Unit 3-47d float
→
MHU.5.3.16Grid code compliance tests: Unit 3-47d float
→
MHU.5.3.17Unit 3 reliability run-47d float
→
MHU.5.3.18Unit 3 accepted-47d float
→
MHU.5.4.1Whole-station reliability run-47d float
→
MHU.5.4.2Final compliance report to the market operator-47d float
→
MHU.5.4.3Commercial operations date-47d float

The critical path in the export runs from the Section 3 tunnel drive to commercial operations through 38 activities. Every stage has -47 days of float, so delay passes straight through to the end date.

Delivery roadmapAs at 27 Apr 2026

Jan 2025 to Mar 2028 · schedule exportCompleteOpenCommercial operations
Q1 2025
Q3 2025
Q1 2026
Q3 2026
Q1 2027
Q3 2027
TODAY
All statutory approvals obtained

30 Jun 2025
TBM breakthrough at powerhouse

08 Feb 2027
Energisation approval granted

05 Nov 2027
Commercial operations date

15 Mar 2028
P1
Pre-construction and approvals
07 Jan 2025 to 21 Jul 2025 · 100% complete
Complete. All statutory approvals obtained 30 Jun 2025.
100%
P2
Civil works and dam infrastructureAT RISK
19 May 2025 to 29 Jul 2027 · 63% complete
Section 3 tunnel drive suspended · 47 working days behind baseline
63% complete. The Section 3 tunnel drive is suspended, and it drives the commercial operations date (47 working days behind baseline).
63%
P3
Mechanical and electrical installation
05 May 2025 to 30 Sep 2027 · 47% complete
47% complete. The 330kV transformer order has not been placed and the electrical design review is six weeks behind.
47%
P4
Environmental and heritage management
05 Mar 2025 to 24 Jan 2028 · 43% complete
43% complete. First Nations artefacts were found at the tailrace and works there are suspended pending the heritage regulator.
43%
P5
Testing, commissioning and handoverAT RISK
27 Apr 2026 to 29 Mar 2028 · 0% complete
Grid connection pre-application not lodged · Unit 1 synchronisation dated before approval
0% complete. The AEMO grid connection pre-application has not been lodged. Starts 27 Apr 2026.
0%

The tunnel drive (MHU.2.4.17) sits in Civil works, and the grid connection and synchronisation tasks sit in Testing, commissioning and handover. Their effect on commercial operations is shown on the Critical Path tab.

Decisions required

Decision 1

Unit 1 is dated to synchronise before the grid operator has approved energisation

Requested: Decide whether First synchronisation: Unit 1 (MHU.5.3.1) waits for the energisation approval (MHU.5.1.6), or confirm in writing that the overlap is intended and how the connection is protected.

Recommended: Hold synchronisation until the approval is granted, and re-date Unit 1 and the units that follow it.

AuthorityTo be confirmed
Needed by15 Oct 2027

If not decided: The 15 Mar 2028 commercial operations date is not supported by the schedule's own logic. In the dependency-corrected scenario (modelled) it moves to 5 Apr 2028.

Linked: Risk 2Linked: Recommended Action 1Source: MHU.5.3.1 (ID 295), MHU.5.1.6 (ID 279)
Decision 2

The 330kV transformer purchase is waiting on a design review that is six weeks behind

Requested: Decide whether purchase approval for the 330kV generator transformer (MHU.3.5.4) is released before the electrical design review (MHU.3.1.3) closes, or whether the order waits for it.

Recommended: Set a date for the design review to close and give the Transformer Package Lead authority to place the order on that date.

AuthorityTo be confirmed
Needed by13 May 2026

If not decided: The order was baselined for 31 Mar 2026 and is now dated 14 May 2026. The export shows its float as -15 working days.

Linked: Risk 3Linked: Recommended Action 3Source: MHU.3.5.4 (ID 194), MHU.3.1.3 (ID 134)

What could change the outcome

The top risks that could move this outlook. A preview of the full Risk Analysis tab.

SeverityRisk
Critical risk
Tunnelling suspended at Section 3

The Section 3 drive is suspended after the machine met a fault zone, so commercial operations is 47 working days behind baseline. A geotechnical variation and an extension of time claim are open.

Critical risk
Unit 1 synchronises before energisation approval

First synchronisation is dated 15 working days before the grid operator approves energisation, so the commercial operations date is not supported by the schedule's own logic.

High risk
Transformer order not placed

The 330kV transformer order is waiting on an electrical design review that is 30 working days behind.

View all 5 risks →

Workstream health

WorkstreamCompletePositionStatus
Approvals and Commercial100%All activities completeComplete
Design100%All activities completeComplete
Civil Works67%1 delayedWatch
Tunnelling49%1 delayed, 21 with negative floatAt risk
Dam Works100%All activities completeComplete
Electrical32%1 delayed, 9 with negative floatAt risk
Mechanical53%3 with negative floatAt risk
Controls and SCADA55%On planOn plan
Environment and Heritage43%1 with negative floatAt risk
Grid Connection0%10 with negative floatAt risk
Commissioning0%27 with negative floatAt risk
Data confidence: High · Refreshed 27 Apr 2026 · 1 dependency violation
  • All 292 activities have an owner, and dependency links run through the whole project, so float and the critical path are calculated from schedule logic.
  • 1 task is dated to start before the work it depends on has finished. The dates do not follow the schedule's own logic there, so the end date shown may be too early. Re-date First synchronisation: Unit 1 or confirm the overlap is intended.
Delivery overview

Pre-construction and approvals are complete. Civil works are 63% complete and carry the delay: the Section 3 tunnel drive is suspended and commercial operations is 47 working days behind baseline.

  • 1Pre-construction and approvals are complete.
  • 2Civil works are 63% complete. The Section 3 tunnel drive is suspended, a geotechnical variation is under assessment and an extension of time claim is active.
  • 3The grid connection pre-application is not lodged and Unit 1 synchronisation is dated before energisation approval, so 15 Mar 2028 may be too early.
63%
Civil works complete
47d
Working days behind baseline
15d
Unit 1 sync before approval
0%
Testing and commissioning

PhasesSelect a phase to expand

Approvals and consents100%
Lead: Approvals Lead · Jan '25 → Jun '25
Investigations and design100%
Lead: Design Manager · Jan '25 → Jun '25
Procurement and contracts100%
Lead: Procurement Lead · Jan '25 → Jul '25
All 3 packages complete.
Site establishment and access100%
Lead: Site Superintendent · May '25 → Sep '25
River diversion and cofferdam100%
Lead: Civil Package Manager · Jul '25 → Sep '25
Intake structure100%
Lead: Civil Package Manager · Sep '25 → Mar '26
Penstock tunnel49%
Lead: Tunnelling Manager · May '25 → Jul '27 · forecast 29 Jul 27 vs baseline 24 May 27
Powerhouse civil works51%
Lead: Civil Package Manager · Sep '25 → Nov '26
Tailrace27%
Lead: Civil Package Manager · Jan '26 → Sep '26
Dam and spillway works100%
Lead: Dam Engineer · Sep '25 → Jan '26
The Section 3 tunnel drive (MHU.2.4.17) is suspended and finishes 3 Aug 2026, 47 working days after baseline. A geotechnical variation (MHU.2.4.38) is under assessment and the extension of time claim (MHU.2.4.40) has no determination yet.
Electrical design and review53%
Lead: Electrical Design Lead · Jan '26 → Jun '26
Turbine-generator units69%
Lead: Mechanical Design Lead · Jul '25 → Oct '26
Penstock valves, gates and crane80%
Lead: Mechanical Design Lead · Jul '25 → Sep '27 · forecast 30 Sep 27 vs baseline 27 Jul 27
Turbine-generator installation0%
Lead: Site Superintendent · Oct '26 → Jul '27
330kV generator transformer14%
Lead: Transformer Package Lead · May '25 → Aug '27 · forecast 3 Aug 27 vs baseline 22 Jun 27
Switchyard and transmission71%
Lead: Electrical Design Lead · Sep '25 → Aug '26
Control systems and auxiliaries38%
Lead: Controls Lead · Jul '25 → Mar '27
The 330kV transformer order (MHU.3.5.4) has not been placed. The electrical design review (MHU.3.1.3) is 30 working days behind.
Environmental management46%
Lead: Environmental Manager · Apr '25 → Jan '28
Heritage management38%
Lead: Heritage Advisor · Mar '25 → Jul '26
Community and stakeholders33%
Lead: Community Liaison Lead · May '25 → Nov '27
Excavate tailrace channel: stage 2 (MHU.2.6.2) is suspended after First Nations artefacts were found. The heritage regulator's assessment (MHU.4.2.4) is 25% complete.
Grid connection0%
Lead: Grid Connection Lead · Apr '26 → Nov '27 · forecast 5 Nov 27 vs baseline 5 Jul 27
Pre-commissioning0%
Lead: Commissioning Manager · Jun '26 → Nov '27 · forecast 26 Nov 27 vs baseline 21 Sep 27
Hot commissioning0%
Lead: Commissioning Manager · Oct '27 → Feb '28 · forecast 17 Feb 28 vs baseline 8 Dec 27
Commercial operations0%
Lead: Commissioning Manager · Feb '28 → Mar '28 · forecast 29 Mar 28 vs baseline 21 Jan 28
Handover readiness0%
Lead: Commissioning Manager · Mar '27 → Dec '27
Lodge AEMO grid connection pre-application (MHU.5.1.1) is not lodged and was due 2 Feb 2026. First synchronisation: Unit 1 (MHU.5.3.1) is dated 15 working days before the energisation approval.

ScheduleAs at 27 Apr 2026

CRITICAL overall. 48% complete against 51% planned. Commercial operations is 15 Mar 2028 as dated, 47 working days past baseline, and 5 Apr 2028 if the energisation approval comes before Unit 1 synchronises.
Status
WBSTask%StartFinishForecastOwnerStatusComments
MHUMeridian Hydropower Upgrade48%07 Jan 202524 Jan 202829 Mar 2028Project DirectorIn progress
MHU.1Pre-construction and approvals100%07 Jan 202521 Jul 202521 Jul 2025 ✓Project DirectorDone
MHU.1.1Approvals and consents100%07 Jan 202530 Jun 202530 Jun 2025 ✓Approvals LeadDone
MHU.1.1.1Prepare environmental impact assessment100%07 Jan 202504 Mar 202504 Mar 2025 ✓Environmental ManagerDone
MHU.1.1.2Public exhibition of environmental assessment100%05 Mar 202501 Apr 202501 Apr 2025 ✓Approvals LeadDone
MHU.1.1.3Respond to public submissions100%02 Apr 202524 Apr 202524 Apr 2025 ✓Environmental ManagerDone
MHU.1.1.4Milestone: Environmental approval granted—24 Apr 202524 Apr 202524 Apr 2025 ✓Approvals LeadDone
MHU.1.1.5Prepare water licence variation application100%28 Apr 202516 May 202516 May 2025 ✓Approvals LeadDone
MHU.1.1.6Water regulator determination of licence variation100%19 May 202523 Jun 202523 Jun 2025 ✓Approvals LeadDone
MHU.1.1.7Milestone: Water licence variation granted—23 Jun 202523 Jun 202523 Jun 2025 ✓Approvals LeadDone
MHU.1.1.8Prepare dam safety regulator application100%05 Mar 202501 Apr 202501 Apr 2025 ✓Dam EngineerDone
MHU.1.1.9Dam safety regulator assessment100%02 Apr 202516 May 202516 May 2025 ✓Dam EngineerDone
MHU.1.1.10Milestone: Dam safety approval granted—16 May 202516 May 202516 May 2025 ✓Dam EngineerDone
MHU.1.1.11Lodge development application100%28 Apr 202502 May 202502 May 2025 ✓Approvals LeadDone
MHU.1.1.12Council assessment of development application100%05 May 202530 Jun 202530 Jun 2025 ✓Approvals LeadDone
MHU.1.1.13Milestone: Development consent granted—30 Jun 202530 Jun 202530 Jun 2025 ✓Approvals LeadDone
MHU.1.1.14Milestone: All statutory approvals obtained—30 Jun 202530 Jun 202530 Jun 2025 ✓Project DirectorDone
MHU.1.2Investigations and design100%07 Jan 202530 Jun 202530 Jun 2025 ✓Design ManagerDone
MHU.1.2.1Geotechnical investigation: tunnel alignment boreholes100%07 Jan 202518 Feb 202518 Feb 2025 ✓Geotechnical EngineerDone
MHU.1.2.2Geotechnical laboratory testing100%19 Feb 202511 Mar 202511 Mar 2025 ✓Geotechnical EngineerDone
MHU.1.2.3Geotechnical baseline report100%12 Mar 202501 Apr 202501 Apr 2025 ✓Geotechnical EngineerDone
MHU.1.2.4Dam condition assessment100%07 Jan 202504 Feb 202504 Feb 2025 ✓Dam EngineerDone
MHU.1.2.5Concept design100%07 Jan 202518 Feb 202518 Feb 2025 ✓Design ManagerDone
MHU.1.2.6Detailed design: civil and tunnel works100%02 Apr 202516 Jun 202516 Jun 2025 ✓Design ManagerDone
MHU.1.2.7Detailed design: powerhouse100%19 Feb 202515 Apr 202515 Apr 2025 ✓Design ManagerDone
MHU.1.2.8Detailed design: tunnel lining and steel penstock100%02 Apr 202523 May 202523 May 2025 ✓Design ManagerDone
MHU.1.2.9Independent design review100%17 Jun 202530 Jun 202530 Jun 2025 ✓Design ManagerDone
MHU.1.2.10Milestone: Civil design issued for construction—30 Jun 202530 Jun 202530 Jun 2025 ✓Design ManagerDone
MHU.1.2.11Electrical and mechanical design basis report100%19 Feb 202501 Apr 202501 Apr 2025 ✓Mechanical Design LeadDone
MHU.1.2.12Turbine-generator specification100%02 Apr 202509 May 202509 May 2025 ✓Mechanical Design LeadDone
MHU.1.2.13330kV transformer specification100%02 Apr 202502 May 202502 May 2025 ✓Electrical Design LeadDone
MHU.1.2.14Switchyard and protection basis of design100%02 Apr 202509 May 202509 May 2025 ✓Electrical Design LeadDone
MHU.1.2.15Milestone: Electrical and mechanical design basis approved—09 May 202509 May 202509 May 2025 ✓Design ManagerDone
MHU.1.3Procurement and contracts100%07 Jan 202521 Jul 202521 Jul 2025 ✓Procurement LeadDone
MHU.1.3.1Civil and tunnelling tender100%19 Feb 202508 Apr 202508 Apr 2025 ✓Procurement LeadDone
MHU.1.3.2Civil and tunnelling tender evaluation100%09 Apr 202502 May 202502 May 2025 ✓Procurement LeadDone
MHU.1.3.3Milestone: Civil and tunnelling contract awarded—16 May 202516 May 202516 May 2025 ✓Commercial ManagerDone
MHU.1.3.4Electrical and mechanical package tender100%12 May 202530 Jun 202530 Jun 2025 ✓Procurement LeadDone
MHU.1.3.5Electrical and mechanical tender evaluation100%01 Jul 202521 Jul 202521 Jul 2025 ✓Procurement LeadDone
MHU.1.3.6Milestone: Electrical and mechanical contract awarded—21 Jul 202521 Jul 202521 Jul 2025 ✓Commercial ManagerDone
MHU.1.3.7Switchyard and transmission tender100%12 May 202523 Jun 202523 Jun 2025 ✓Procurement LeadDone
MHU.1.3.8Switchyard and transmission tender evaluation100%24 Jun 202507 Jul 202507 Jul 2025 ✓Procurement LeadDone
MHU.1.3.9Milestone: Switchyard and transmission contract awarded—07 Jul 202507 Jul 202507 Jul 2025 ✓Commercial ManagerDone
MHU.1.3.10Project management plan and controls baseline100%07 Jan 202504 Feb 202504 Feb 2025 ✓Project DirectorDone
MHU.1.3.11Project safety management plan approved100%05 Feb 202525 Feb 202525 Feb 2025 ✓Safety ManagerDone
MHU.2Civil works and dam infrastructure63%19 May 202524 May 202729 Jul 2027Civil Package ManagerIn progress
MHU.2.1Site establishment and access100%19 May 202501 Sep 202501 Sep 2025 ✓Site SuperintendentDone
MHU.2.1.1Mobilise civil contractor100%19 May 202530 May 202530 May 2025 ✓Site SuperintendentDone
MHU.2.1.2Construct site access road100%02 Jun 202528 Jul 202528 Jul 2025 ✓Site SuperintendentDone
MHU.2.1.3Build site camp and offices100%02 Jun 202514 Jul 202514 Jul 2025 ✓Site SuperintendentDone
MHU.2.1.4Install temporary power and water100%15 Jul 202504 Aug 202504 Aug 2025 ✓Site SuperintendentDone
MHU.2.1.5Establish concrete batch plant100%05 Aug 202501 Sep 202501 Sep 2025 ✓Site SuperintendentDone
MHU.2.1.6Establish survey control network100%02 Jun 202516 Jun 202516 Jun 2025 ✓Site SuperintendentDone
MHU.2.1.7Milestone: Site established—01 Sep 202501 Sep 202501 Sep 2025 ✓Site SuperintendentDone
MHU.2.2River diversion and cofferdam100%01 Jul 202529 Sep 202529 Sep 2025 ✓Civil Package ManagerDone
MHU.2.2.1Cofferdam design check100%01 Jul 202521 Jul 202521 Jul 2025 ✓Design ManagerDone
MHU.2.2.2Construct upstream cofferdam100%29 Jul 202508 Sep 202508 Sep 2025 ✓Civil Package ManagerDone
MHU.2.2.3Excavate river diversion channel100%29 Jul 202501 Sep 202501 Sep 2025 ✓Civil Package ManagerDone
MHU.2.2.4Divert river flow100%09 Sep 202515 Sep 202515 Sep 2025 ✓Civil Package ManagerDone
MHU.2.2.5Dewater the works area100%16 Sep 202529 Sep 202529 Sep 2025 ✓Civil Package ManagerDone
MHU.2.2.6Milestone: Works area dry—29 Sep 202529 Sep 202529 Sep 2025 ✓Civil Package ManagerDone
MHU.2.3Intake structure100%30 Sep 202530 Mar 202630 Mar 2026 ✓Civil Package ManagerDone
MHU.2.3.1Excavate intake structure100%30 Sep 202511 Nov 202511 Nov 2025 ✓Civil Package ManagerDone
MHU.2.3.2Intake foundation preparation100%12 Nov 202502 Dec 202502 Dec 2025 ✓Civil Package ManagerDone
MHU.2.3.3Intake formwork and reinforcement100%03 Dec 202502 Feb 202602 Feb 2026 ✓Civil Package ManagerDone
MHU.2.3.4Pour intake walls and roof slab100%03 Feb 202609 Mar 202609 Mar 2026 ✓Civil Package ManagerDone
MHU.2.3.5Install trash racks100%10 Mar 202630 Mar 202630 Mar 2026 ✓Civil Package ManagerDone
MHU.2.4Penstock tunnel49%19 May 202524 May 202729 Jul 2027Tunnelling ManagerIn progress
MHU.2.4.1TBM design and manufacture100%19 May 202525 Aug 202525 Aug 2025 ✓Tunnelling ManagerDone
MHU.2.4.2TBM shipping and delivery to site100%26 Aug 202515 Sep 202515 Sep 2025 ✓Tunnelling ManagerDone
MHU.2.4.3TBM assembly and launch-chamber commissioning100%16 Sep 202521 Oct 202521 Oct 2025 ✓Tunnelling ManagerDone
MHU.2.4.4Construct tunnel portal and launch pit100%02 Sep 202507 Oct 202507 Oct 2025 ✓Civil Package ManagerDone
MHU.2.4.5Milestone: TBM launched—21 Oct 202521 Oct 202521 Oct 2025 ✓Tunnelling ManagerDone
MHU.2.4.6Section 1: set up and survey100%22 Oct 202528 Oct 202528 Oct 2025 ✓Tunnelling ManagerDone
MHU.2.4.7Section 1: TBM drive100%29 Oct 202509 Dec 202509 Dec 2025 ✓Tunnelling ManagerDone
MHU.2.4.8Section 1: ground support and segment lining100%10 Dec 202523 Dec 202523 Dec 2025 ✓Tunnelling ManagerDone
MHU.2.4.9Section 1: grouting and survey check100%24 Dec 202502 Jan 202602 Jan 2026 ✓Tunnelling ManagerDone
MHU.2.4.10Milestone: Section 1 complete—02 Jan 202602 Jan 202602 Jan 2026 ✓Tunnelling ManagerDone
MHU.2.4.11Section 2: set up and survey100%05 Jan 202609 Jan 202609 Jan 2026 ✓Tunnelling ManagerDone
MHU.2.4.12Section 2: TBM drive100%12 Jan 202602 Mar 202602 Mar 2026 ✓Tunnelling ManagerDone
MHU.2.4.13Section 2: ground support and segment lining100%03 Mar 202616 Mar 202616 Mar 2026 ✓Tunnelling ManagerDone
MHU.2.4.14Section 2: grouting and survey check100%17 Mar 202623 Mar 202623 Mar 2026 ✓Tunnelling ManagerDone
MHU.2.4.15Milestone: Section 2 complete—23 Mar 202623 Mar 202623 Mar 2026 ✓Tunnelling ManagerDone
MHU.2.4.16Section 3: set up and survey100%24 Mar 202630 Mar 202630 Mar 2026 ✓Tunnelling ManagerDone
MHU.2.4.17Section 3: TBM drive60%31 Mar 202627 May 202603 Aug 2026Tunnelling ManagerDelayed
TBM suspended at Section 3 after it met a fault zone. A geotechnical variation is under assessment and an extension of time claim is active.
MHU.2.4.18Section 3: ground support and segment lining0%04 Aug 202611 Jun 202617 Aug 2026Tunnelling ManagerNot started
MHU.2.4.19Section 3: grouting and survey check0%18 Aug 202618 Jun 202624 Aug 2026Tunnelling ManagerNot started
MHU.2.4.20Milestone: Section 3 complete—24 Aug 202618 Jun 202624 Aug 2026Tunnelling ManagerNot started
MHU.2.4.21Section 4: set up and survey0%25 Aug 202625 Jun 202631 Aug 2026Tunnelling ManagerNot started
MHU.2.4.22Section 4: TBM drive0%01 Sep 202620 Aug 202627 Oct 2026Tunnelling ManagerNot started
MHU.2.4.23Section 4: ground support and segment lining0%28 Oct 202603 Sep 202610 Nov 2026Tunnelling ManagerNot started
MHU.2.4.24Section 4: grouting and survey check0%11 Nov 202610 Sep 202617 Nov 2026Tunnelling ManagerNot started
MHU.2.4.25Milestone: Section 4 complete—17 Nov 202610 Sep 202617 Nov 2026Tunnelling ManagerNot started
MHU.2.4.26Section 5: set up and survey0%18 Nov 202617 Sep 202624 Nov 2026Tunnelling ManagerNot started
MHU.2.4.27Section 5: TBM drive0%25 Nov 202606 Nov 202615 Jan 2027Tunnelling ManagerNot started
MHU.2.4.28Section 5: ground support and segment lining0%18 Jan 202720 Nov 202601 Feb 2027Tunnelling ManagerNot started
MHU.2.4.29Section 5: grouting and survey check0%02 Feb 202727 Nov 202608 Feb 2027Tunnelling ManagerNot started
MHU.2.4.30Milestone: Section 5 complete—08 Feb 202727 Nov 202608 Feb 2027Tunnelling ManagerNot started
MHU.2.4.31Milestone: TBM breakthrough at powerhouse—08 Feb 202727 Nov 202608 Feb 2027Tunnelling ManagerNot started
MHU.2.4.32Tunnel final concrete lining0%09 Feb 202713 Jan 202722 Mar 2027Tunnelling ManagerNot started
MHU.2.4.33Install steel penstock liner0%23 Mar 202718 Mar 202726 May 2027Tunnelling ManagerNot started
MHU.2.4.34Penstock pressure test0%27 May 202705 Apr 202709 Jun 2027Tunnelling ManagerNot started
MHU.2.4.35Penstock flushing, cleaning and inspection0%10 Jun 202726 Apr 202701 Jul 2027Tunnelling ManagerNot started
MHU.2.4.36Install penstock instrumentation and monitoring0%02 Jul 202724 May 202729 Jul 2027Tunnelling ManagerNot started
MHU.2.4.37Milestone: Penstock complete—29 Jul 202724 May 202729 Jul 2027Tunnelling ManagerNot started
MHU.2.4.38Assess geotechnical variation at Section 335%31 Mar 202627 May 2026Geotechnical EngineerIn progress
Variation under assessment. Ground conditions at Section 3 differ from the geotechnical baseline report.
MHU.2.4.39Contractor lodges extension of time claim100%31 Mar 202615 Apr 202615 Apr 2026 ✓Commercial ManagerDone
Claim lodged by the civil and tunnelling contractor.
MHU.2.4.40Assess extension of time claim25%16 Apr 202611 Jun 2026Commercial ManagerIn progress
Extension of time claim is active. No determination has been made.
MHU.2.5Powerhouse civil works51%02 Sep 202527 Nov 2026Civil Package ManagerIn progress
MHU.2.5.1Excavate powerhouse pit100%02 Sep 202525 Nov 202525 Nov 2025 ✓Civil Package ManagerDone
MHU.2.5.2Rock support and drainage100%26 Nov 202509 Jan 202609 Jan 2026 ✓Civil Package ManagerDone
MHU.2.5.3Foundation and substructure concrete100%12 Jan 202623 Mar 202623 Mar 2026 ✓Civil Package ManagerDone
MHU.2.5.4Draft tube and scroll case concrete: Unit 1100%24 Mar 202622 Apr 202622 Apr 2026 ✓Civil Package ManagerDone
MHU.2.5.5Draft tube and scroll case concrete: Unit 210%23 Apr 202620 May 2026Civil Package ManagerIn progress
MHU.2.5.6Draft tube and scroll case concrete: Unit 30%21 May 202618 Jun 2026Civil Package ManagerNot started
MHU.2.5.7Powerhouse structure to roof0%19 Jun 202610 Sep 2026Civil Package ManagerNot started
MHU.2.5.8Powerhouse roof, cladding and weatherproofing0%11 Sep 202623 Oct 2026Civil Package ManagerNot started
MHU.2.5.9Milestone: Powerhouse watertight—23 Oct 202623 Oct 2026Civil Package ManagerNot started
MHU.2.5.10Powerhouse internal fit-out0%26 Oct 202627 Nov 2026Civil Package ManagerNot started
MHU.2.6Tailrace27%12 Jan 202607 Sep 2026Civil Package ManagerIn progress
MHU.2.6.1Excavate tailrace channel: stage 1100%12 Jan 202602 Feb 202602 Feb 2026 ✓Civil Package ManagerDone
MHU.2.6.2Excavate tailrace channel: stage 2 (find location)40%03 Feb 202602 Mar 202606 May 2026Civil Package ManagerDelayed
Works at the tailrace are suspended after First Nations artefacts were found. Waiting on the heritage regulator's assessment.
MHU.2.7Dam and spillway works100%02 Sep 202516 Jan 202616 Jan 2026 ✓Dam EngineerDone
MHU.2.7.1Dam crest and parapet refurbishment100%02 Sep 202504 Nov 202504 Nov 2025 ✓Dam EngineerDone
MHU.2.7.2Spillway gate refurbishment100%02 Sep 202525 Nov 202525 Nov 2025 ✓Dam EngineerDone
MHU.2.7.3Dam instrumentation upgrade100%05 Nov 202516 Dec 202516 Dec 2025 ✓Dam EngineerDone
MHU.2.7.4Seepage monitoring system100%17 Dec 202516 Jan 202616 Jan 2026 ✓Dam EngineerDone
MHU.2.7.5Reservoir drawdown and refill plan100%26 Nov 202516 Dec 202516 Dec 2025 ✓Dam EngineerDone
MHU.2.7.6Milestone: Dam works complete—16 Jan 202616 Jan 202616 Jan 2026 ✓Dam EngineerDone
MHU.3Mechanical and electrical installation47%05 May 202527 Jul 202730 Sep 2027Mechanical Design LeadIn progress
MHU.3.1Electrical design and review53%05 Jan 202611 Jun 2026Electrical Design LeadIn progress
MHU.3.1.1Electrical single line and protection design100%05 Jan 202602 Mar 202602 Mar 2026 ✓Electrical Design LeadDone
MHU.3.1.2Generator protection studies60%03 Mar 202613 May 2026Electrical Design LeadIn progress
Revised protection studies are not yet complete.
MHU.3.1.3Electrical design review: 330kV and generator protection30%03 Mar 202630 Mar 202613 May 2026Electrical Design LeadDelayed
The review is six weeks behind. It cannot close until the revised protection studies are complete.
MHU.3.1.4Issue electrical drawings for construction0%14 May 202611 Jun 2026Electrical Design LeadNot started
MHU.3.1.5Milestone: Electrical design approved—11 Jun 202611 Jun 2026Electrical Design LeadNot started
MHU.3.2Turbine-generator units69%22 Jul 202508 Oct 2026Mechanical Design LeadIn progress
MHU.3.2.1Final turbine and generator design approval100%22 Jul 202518 Aug 202518 Aug 2025 ✓Mechanical Design LeadDone
MHU.3.2.2Manufacture turbine, runner and spiral case: Unit 1100%19 Aug 202523 Jan 202623 Jan 2026 ✓Mechanical Design LeadDone
MHU.3.2.3Manufacture generator stator and rotor: Unit 1100%19 Aug 202509 Jan 202609 Jan 2026 ✓Mechanical Design LeadDone
MHU.3.2.4Factory acceptance test: Unit 1 turbine100%27 Jan 202609 Feb 202609 Feb 2026 ✓Quality ManagerDone
MHU.3.2.5Factory acceptance test: Unit 1 generator100%12 Jan 202623 Jan 202623 Jan 2026 ✓Quality ManagerDone
MHU.3.2.6Ship Unit 1 to site100%10 Feb 202630 Mar 202630 Mar 2026 ✓Procurement LeadDone
MHU.3.2.7Milestone: Unit 1 delivered to site—30 Mar 202630 Mar 202630 Mar 2026 ✓Procurement LeadDone
MHU.3.2.8Manufacture turbine, runner and spiral case: Unit 290%01 Dec 202511 May 2026Mechanical Design LeadIn progress
MHU.3.2.9Manufacture generator stator and rotor: Unit 299%01 Dec 202527 Apr 2026Mechanical Design LeadIn progress
MHU.3.2.10Factory acceptance test: Unit 2 turbine0%12 May 202625 May 2026Quality ManagerNot started
MHU.3.2.11Factory acceptance test: Unit 2 generator0%28 Apr 202611 May 2026Quality ManagerNot started
MHU.3.2.12Ship Unit 2 to site0%26 May 202614 Jul 2026Procurement LeadNot started
MHU.3.2.13Milestone: Unit 2 delivered to site—14 Jul 202614 Jul 2026Procurement LeadNot started
MHU.3.2.14Manufacture turbine, runner and spiral case: Unit 335%02 Mar 202605 Aug 2026Mechanical Design LeadIn progress
MHU.3.2.15Manufacture generator stator and rotor: Unit 338%02 Mar 202622 Jul 2026Mechanical Design LeadIn progress
MHU.3.2.16Factory acceptance test: Unit 3 turbine0%06 Aug 202619 Aug 2026Quality ManagerNot started
MHU.3.2.17Factory acceptance test: Unit 3 generator0%23 Jul 202605 Aug 2026Quality ManagerNot started
MHU.3.2.18Ship Unit 3 to site0%20 Aug 202608 Oct 2026Procurement LeadNot started
MHU.3.2.19Milestone: Unit 3 delivered to site—08 Oct 202608 Oct 2026Procurement LeadNot started
MHU.3.3Penstock valves, gates and crane80%22 Jul 202527 Jul 202730 Sep 2027Mechanical Design LeadIn progress
MHU.3.3.1Manufacture intake gates100%22 Jul 202528 Oct 202528 Oct 2025 ✓Mechanical Design LeadDone
MHU.3.3.2Deliver intake gates to site100%29 Oct 202518 Nov 202518 Nov 2025 ✓Procurement LeadDone
MHU.3.3.3Install intake gates85%31 Mar 202629 Apr 2026Site SuperintendentIn progress
MHU.3.3.4Manufacture main inlet valves (three)100%22 Jul 202525 Nov 202525 Nov 2025 ✓Mechanical Design LeadDone
MHU.3.3.5Deliver main inlet valves to site100%26 Nov 202502 Jan 202602 Jan 2026 ✓Procurement LeadDone
MHU.3.3.6Install main inlet valve: Unit 10%30 Jul 202715 Jun 202719 Aug 2027Site SuperintendentNot started
MHU.3.3.7Install main inlet valve: Unit 20%20 Aug 202706 Jul 202709 Sep 2027Site SuperintendentNot started
MHU.3.3.8Install main inlet valve: Unit 30%10 Sep 202727 Jul 202730 Sep 2027Site SuperintendentNot started
MHU.3.3.9Manufacture and deliver powerhouse overhead crane100%22 Jul 202504 Nov 202504 Nov 2025 ✓Mechanical Design LeadDone
MHU.3.3.10Install and load test overhead crane0%11 Sep 202616 Oct 2026Site SuperintendentNot started
MHU.3.4Turbine-generator installation0%26 Oct 202620 Jul 2027Site SuperintendentNot started
MHU.3.4.1Install draft tube liner and embedded parts: Unit 10%26 Oct 202613 Nov 2026Site SuperintendentNot started
MHU.3.4.2Install spiral case: Unit 10%16 Nov 202611 Dec 2026Site SuperintendentNot started
MHU.3.4.3Install turbine runner and shaft: Unit 10%14 Dec 202620 Jan 2027Site SuperintendentNot started
MHU.3.4.4Install generator stator and rotor: Unit 10%21 Jan 202704 Mar 2027Site SuperintendentNot started
MHU.3.4.5Install auxiliary piping and systems: Unit 10%21 Jan 202704 Mar 2027Site SuperintendentNot started
MHU.3.4.6Install power and control cabling: Unit 10%05 Mar 202712 Apr 2027Site SuperintendentNot started
MHU.3.4.7Milestone: Unit 1 mechanically complete—12 Apr 202712 Apr 2027Site SuperintendentNot started
MHU.3.4.8Install draft tube liner and embedded parts: Unit 20%14 Dec 202606 Jan 2027Site SuperintendentNot started
MHU.3.4.9Install spiral case: Unit 20%07 Jan 202704 Feb 2027Site SuperintendentNot started
MHU.3.4.10Install turbine runner and shaft: Unit 20%05 Feb 202711 Mar 2027Site SuperintendentNot started
MHU.3.4.11Install generator stator and rotor: Unit 20%12 Mar 202726 Apr 2027Site SuperintendentNot started
MHU.3.4.12Install auxiliary piping and systems: Unit 20%12 Mar 202726 Apr 2027Site SuperintendentNot started
MHU.3.4.13Install power and control cabling: Unit 20%27 Apr 202731 May 2027Site SuperintendentNot started
MHU.3.4.14Milestone: Unit 2 mechanically complete—31 May 202731 May 2027Site SuperintendentNot started
MHU.3.4.15Install draft tube liner and embedded parts: Unit 30%05 Feb 202725 Feb 2027Site SuperintendentNot started
MHU.3.4.16Install spiral case: Unit 30%26 Feb 202725 Mar 2027Site SuperintendentNot started
MHU.3.4.17Install turbine runner and shaft: Unit 30%30 Mar 202703 May 2027Site SuperintendentNot started
MHU.3.4.18Install generator stator and rotor: Unit 30%04 May 202715 Jun 2027Site SuperintendentNot started
MHU.3.4.19Install auxiliary piping and systems: Unit 30%04 May 202715 Jun 2027Site SuperintendentNot started
MHU.3.4.20Install power and control cabling: Unit 30%16 Jun 202720 Jul 2027Site SuperintendentNot started
MHU.3.4.21Milestone: Unit 3 mechanically complete—20 Jul 202720 Jul 2027Site SuperintendentNot started
MHU.3.5330kV generator transformer14%05 May 202522 Jun 202703 Aug 2027Transformer Package LeadIn progress
MHU.3.5.1Prepare transformer purchase specification100%05 May 202523 May 202523 May 2025 ✓Transformer Package LeadDone
MHU.3.5.2Transformer tender100%26 May 202530 Jun 202530 Jun 2025 ✓Procurement LeadDone
MHU.3.5.3Transformer tender evaluation and recommendation100%01 Jul 202514 Jul 202514 Jul 2025 ✓Procurement LeadDone
MHU.3.5.4Place order for 330kV generator transformer0%14 May 202608 Apr 202620 May 2026Transformer Package LeadNot started
Order has not been placed. Purchase approval is waiting on the electrical design review.
MHU.3.5.5Manufacture 330kV generator transformer0%21 May 202620 Jan 202704 Mar 2027Transformer Package LeadNot started
MHU.3.5.6Transformer factory acceptance test0%05 Mar 202711 Feb 202725 Mar 2027Quality ManagerNot started
MHU.3.5.7Ship transformer to site0%30 Mar 202725 Mar 202710 May 2027Procurement LeadNot started
MHU.3.5.8Deliver and position transformer on plinth0%11 May 202712 Apr 202724 May 2027Site SuperintendentNot started
MHU.3.5.9Transformer installation, oil fill and settling0%25 May 202724 May 202706 Jul 2027Site SuperintendentNot started
MHU.3.5.10Transformer site tests0%07 Jul 202722 Jun 202703 Aug 2027Electrical Design LeadNot started
MHU.3.5.11Milestone: Transformer ready for energisation—03 Aug 202722 Jun 202703 Aug 2027Transformer Package LeadNot started
MHU.3.6Switchyard and transmission71%02 Sep 202513 Aug 2026Electrical Design LeadIn progress
MHU.3.6.1Switchyard civil works100%02 Sep 202528 Oct 202528 Oct 2025 ✓Civil Package ManagerDone
MHU.3.6.2Erect switchyard steel structures100%29 Oct 202509 Dec 202509 Dec 2025 ✓Site SuperintendentDone
MHU.3.6.3Install circuit breakers and disconnectors100%10 Dec 202523 Jan 202623 Jan 2026 ✓Site SuperintendentDone
MHU.3.6.4Install protection and control panels0%12 Jun 202616 Jul 2026Electrical Design LeadNot started
MHU.3.6.5Terminate high-voltage lines and cables0%17 Jul 202613 Aug 2026Electrical Design LeadNot started
MHU.3.6.6Earthing and lightning protection100%10 Dec 202502 Jan 202602 Jan 2026 ✓Site SuperintendentDone
MHU.3.6.7Milestone: Switchyard complete—13 Aug 202613 Aug 2026Electrical Design LeadNot started
MHU.3.7Control systems and auxiliaries38%22 Jul 202518 Mar 2027Controls LeadIn progress
MHU.3.7.1Control system detailed design100%22 Jul 202501 Sep 202501 Sep 2025 ✓Controls LeadDone
MHU.3.7.2Control system hardware manufacture100%02 Sep 202525 Nov 202525 Nov 2025 ✓Controls LeadDone
MHU.3.7.3Control system factory acceptance test100%26 Nov 202509 Dec 202509 Dec 2025 ✓Quality ManagerDone
MHU.3.7.4Deliver control system to site100%10 Dec 202509 Jan 202609 Jan 2026 ✓Procurement LeadDone
MHU.3.7.5Install control cabinets and operator room0%26 Oct 202627 Nov 2026Controls LeadNot started
MHU.3.7.6Cable installation: control and instrumentation0%30 Nov 202604 Feb 2027Controls LeadNot started
MHU.3.7.7Connect SCADA to remote operations centre0%05 Feb 202718 Mar 2027Controls LeadNot started
MHU.3.7.8Auxiliary AC and DC supplies0%26 Oct 202611 Dec 2026Electrical Design LeadNot started
MHU.3.7.9Fire detection and protection systems0%26 Oct 202627 Nov 2026Site SuperintendentNot started
MHU.3.7.10Cooling water and drainage systems0%26 Oct 202618 Dec 2026Site SuperintendentNot started
MHU.4Environmental and heritage management43%05 Mar 202524 Jan 2028Environmental ManagerIn progress
MHU.4.1Environmental management46%28 Apr 202524 Jan 2028Environmental ManagerIn progress
MHU.4.1.1Environmental management plan approved100%28 Apr 202516 May 202516 May 2025 ✓Environmental ManagerDone
MHU.4.1.2Water quality monitoring and report: Q2 2025100%19 May 202506 Jun 202506 Jun 2025 ✓Environmental ManagerDone
MHU.4.1.3Water quality monitoring and report: Q3 2025100%01 Jul 202521 Jul 202521 Jul 2025 ✓Environmental ManagerDone
MHU.4.1.4Water quality monitoring and report: Q4 2025100%01 Oct 202522 Oct 202522 Oct 2025 ✓Environmental ManagerDone
MHU.4.1.5Water quality monitoring and report: Q1 2026100%02 Jan 202622 Jan 202622 Jan 2026 ✓Environmental ManagerDone
MHU.4.1.6Water quality monitoring and report: Q2 2026100%01 Apr 202623 Apr 202623 Apr 2026 ✓Environmental ManagerDone
MHU.4.1.7Water quality monitoring and report: Q3 20260%01 Jul 202621 Jul 2026Environmental ManagerNot started
MHU.4.1.8Water quality monitoring and report: Q4 20260%01 Oct 202622 Oct 2026Environmental ManagerNot started
MHU.4.1.9Water quality monitoring and report: Q1 20270%04 Jan 202722 Jan 2027Environmental ManagerNot started
MHU.4.1.10Water quality monitoring and report: Q2 20270%01 Apr 202721 Apr 2027Environmental ManagerNot started
MHU.4.1.11Water quality monitoring and report: Q3 20270%01 Jul 202721 Jul 2027Environmental ManagerNot started
MHU.4.1.12Water quality monitoring and report: Q4 20270%01 Oct 202722 Oct 2027Environmental ManagerNot started
MHU.4.1.13Water quality monitoring and report: Q1 20280%04 Jan 202824 Jan 2028Environmental ManagerNot started
MHU.4.1.14Erosion and sediment control audit: Q2 2026100%01 Apr 202614 Apr 202614 Apr 2026 ✓Environmental ManagerDone
MHU.4.1.15Erosion and sediment control audit: Q3 20260%01 Jul 202610 Jul 2026Environmental ManagerNot started
MHU.4.1.16Erosion and sediment control audit: Q4 20260%01 Oct 202613 Oct 2026Environmental ManagerNot started
MHU.4.1.17Erosion and sediment control audit: Q1 20270%04 Jan 202713 Jan 2027Environmental ManagerNot started
MHU.4.1.18Erosion and sediment control audit: Q2 20270%01 Apr 202712 Apr 2027Environmental ManagerNot started
MHU.4.1.19Erosion and sediment control audit: Q3 20270%01 Jul 202712 Jul 2027Environmental ManagerNot started
MHU.4.1.20Erosion and sediment control audit: Q4 20270%01 Oct 202713 Oct 2027Environmental ManagerNot started
MHU.4.1.21Fish passage design100%28 Apr 202506 Jun 202506 Jun 2025 ✓Environmental ManagerDone
MHU.4.1.22Construct fish passage71%10 Mar 202613 May 2026Civil Package ManagerIn progress
MHU.4.1.23Fish passage testing and sign-off0%14 May 202603 Jun 2026Environmental ManagerNot started
MHU.4.1.24Revegetation plan100%19 May 202530 May 202530 May 2025 ✓Environmental ManagerDone
MHU.4.1.25Revegetation stage 1: construction areas100%02 Sep 202529 Sep 202529 Sep 2025 ✓Environmental ManagerDone
MHU.4.1.26Revegetation stage 2: spoil areas0%09 Feb 202729 Dec 202608 Mar 2027Environmental ManagerNot started
MHU.4.1.27Final site stabilisation and rehabilitation0%09 Mar 202704 Feb 202714 Apr 2027Environmental ManagerNot started
MHU.4.2Heritage management38%05 Mar 202513 Jul 2026Heritage AdvisorIn progress
MHU.4.2.1Pre-construction heritage survey100%05 Mar 202501 Apr 202501 Apr 2025 ✓Heritage AdvisorDone
MHU.4.2.2Heritage management plan approved100%28 Apr 202509 May 202509 May 2025 ✓Heritage AdvisorDone
MHU.4.2.3Record artefacts found at tailrace and secure the area100%16 Mar 202618 Mar 202618 Mar 2026 ✓Heritage AdvisorDone
First Nations artefacts were found during tailrace excavation. The area is fenced and works have stopped.
MHU.4.2.4Heritage regulator assessment of tailrace find25%19 Mar 202615 May 2026Heritage AdvisorIn progress
Assessment is under way. Tailrace works stay suspended until the regulator advises.
MHU.4.2.5Consult First Nations representatives on management of the find40%19 Mar 202615 May 2026Heritage AdvisorIn progress
MHU.4.2.6Update heritage management plan0%18 May 202629 May 2026Heritage AdvisorNot started
MHU.4.2.7Milestone: Heritage clearance for tailrace works—29 May 202629 May 2026Heritage AdvisorNot started
MHU.4.2.8Heritage monitoring during remaining tailrace excavation0%01 Jun 202613 Jul 2026Heritage AdvisorNot started
MHU.4.3Community and stakeholders33%05 May 202505 Nov 2027Community Liaison LeadIn progress
MHU.4.3.1Community liaison committee meeting and update 1100%05 May 202509 May 202509 May 2025 ✓Community Liaison LeadDone
MHU.4.3.2Community liaison committee meeting and update 2100%03 Nov 202507 Nov 202507 Nov 2025 ✓Community Liaison LeadDone
MHU.4.3.3Community liaison committee meeting and update 30%04 May 202608 May 2026Community Liaison LeadNot started
MHU.4.3.4Community liaison committee meeting and update 40%02 Nov 202606 Nov 2026Community Liaison LeadNot started
MHU.4.3.5Community liaison committee meeting and update 50%03 May 202707 May 2027Community Liaison LeadNot started
MHU.4.3.6Community liaison committee meeting and update 60%01 Nov 202705 Nov 2027Community Liaison LeadNot started
MHU.2.6.3Excavate remaining tailrace channel after heritage clearance0%01 Jun 202622 Jun 2026Civil Package ManagerNot started
MHU.2.6.4Tailrace concrete lining0%23 Jun 202603 Aug 2026Civil Package ManagerNot started
MHU.2.6.5Tailrace outlet structure0%04 Aug 202607 Sep 2026Civil Package ManagerNot started
MHU.2.6.6Milestone: Tailrace complete—07 Sep 202607 Sep 2026Civil Package ManagerNot started
MHU.5Testing, commissioning and handover0%27 Apr 202621 Jan 202829 Mar 2028Commissioning ManagerNot started
MHU.5.1Grid connection0%27 Apr 202605 Jul 202705 Nov 2027Grid Connection LeadNot started
MHU.5.1.1Lodge AEMO grid connection pre-application0%27 Apr 202613 Feb 202608 May 2026Grid Connection LeadNot started
The pre-application has not been lodged.
MHU.5.1.2AEMO and network provider pre-application response0%11 May 202608 Jul 202628 Sep 2026Grid Connection LeadNot started
MHU.5.1.3Prepare and submit full connection application0%29 Sep 202615 Oct 202608 Jan 2027Grid Connection LeadNot started
MHU.5.1.4Connection agreement negotiation0%11 Jan 202705 Jul 202705 Nov 2027Grid Connection LeadNot started
Connection agreement negotiation is running behind plan.
MHU.5.1.5Generator performance standards agreed0%11 Jan 202709 Apr 202701 Jul 2027Grid Connection LeadNot started
MHU.5.1.6Milestone: Connection agreement executed—05 Nov 202705 Jul 202705 Nov 2027Grid Connection LeadNot started
MHU.5.1.7Power system model validation0%11 Jan 202712 Jan 202707 Apr 2027Grid Connection LeadNot started
MHU.5.1.8Milestone: Energisation approval granted—05 Nov 202705 Jul 202705 Nov 2027Grid Connection LeadNot started
Cherry note First synchronisation: Unit 1 (MHU.5.3.1) is dated to start before this is granted.
MHU.5.2Pre-commissioning0%12 Jun 202621 Sep 202726 Nov 2027Commissioning ManagerNot started
MHU.5.2.1Prepare commissioning plan and test procedures0%12 Jun 202606 Aug 2026Commissioning ManagerNot started
MHU.5.2.2Commission switchyard and transformer0%04 Aug 202720 Jul 202731 Aug 2027Commissioning ManagerNot started
MHU.5.2.3Commission auxiliary systems0%21 Dec 202628 Jan 2027Commissioning ManagerNot started
MHU.5.2.4Commission control and SCADA systems0%19 Mar 202703 May 2027Commissioning ManagerNot started
MHU.5.2.5Inspection and dry checks: Unit 10%20 Aug 202706 Jul 202709 Sep 2027Commissioning ManagerNot started
MHU.5.2.6Insulation and protection tests: Unit 10%10 Sep 202720 Jul 202723 Sep 2027Commissioning ManagerNot started
MHU.5.2.7Wet commissioning without load: Unit 10%24 Sep 202710 Aug 202715 Oct 2027Commissioning ManagerNot started
MHU.5.2.8Inspection and dry checks: Unit 20%10 Sep 202727 Jul 202730 Sep 2027Commissioning ManagerNot started
MHU.5.2.9Insulation and protection tests: Unit 20%01 Oct 202710 Aug 202715 Oct 2027Commissioning ManagerNot started
MHU.5.2.10Wet commissioning without load: Unit 20%18 Oct 202731 Aug 202705 Nov 2027Commissioning ManagerNot started
MHU.5.2.11Inspection and dry checks: Unit 30%01 Oct 202717 Aug 202722 Oct 2027Commissioning ManagerNot started
MHU.5.2.12Insulation and protection tests: Unit 30%25 Oct 202731 Aug 202705 Nov 2027Commissioning ManagerNot started
MHU.5.2.13Wet commissioning without load: Unit 30%08 Nov 202721 Sep 202726 Nov 2027Commissioning ManagerNot started
MHU.5.3Hot commissioning0%18 Oct 202708 Dec 202717 Feb 2028Commissioning ManagerNot started
MHU.5.3.1First synchronisation: Unit 10%18 Oct 202717 Aug 202722 Oct 2027Commissioning ManagerNot started
Cherry note Dated to start 15 working days before Energisation approval granted (MHU.5.1.6) on 5 Nov 2027.
MHU.5.3.2Load rejection and trip tests: Unit 10%25 Oct 202731 Aug 202705 Nov 2027Commissioning ManagerNot started
MHU.5.3.3Performance and efficiency tests: Unit 10%08 Nov 202714 Sep 202719 Nov 2027Commissioning ManagerNot started
MHU.5.3.4Grid code compliance tests: Unit 10%22 Nov 202728 Sep 202703 Dec 2027Grid Connection LeadNot started
MHU.5.3.5Unit 1 reliability run0%06 Dec 202727 Oct 202705 Jan 2028Commissioning ManagerNot started
MHU.5.3.6Milestone: Unit 1 accepted—05 Jan 202827 Oct 202705 Jan 2028Commissioning ManagerNot started
MHU.5.3.7First synchronisation: Unit 20%08 Nov 202707 Sep 202712 Nov 2027Commissioning ManagerNot started
MHU.5.3.8Load rejection and trip tests: Unit 20%15 Nov 202721 Sep 202726 Nov 2027Commissioning ManagerNot started
MHU.5.3.9Performance and efficiency tests: Unit 20%29 Nov 202706 Oct 202710 Dec 2027Commissioning ManagerNot started
MHU.5.3.10Grid code compliance tests: Unit 20%13 Dec 202720 Oct 202724 Dec 2027Grid Connection LeadNot started
MHU.5.3.11Unit 2 reliability run0%29 Dec 202717 Nov 202727 Jan 2028Commissioning ManagerNot started
MHU.5.3.12Milestone: Unit 2 accepted—27 Jan 202817 Nov 202727 Jan 2028Commissioning ManagerNot started
MHU.5.3.13First synchronisation: Unit 30%29 Nov 202728 Sep 202703 Dec 2027Commissioning ManagerNot started
MHU.5.3.14Load rejection and trip tests: Unit 30%06 Dec 202713 Oct 202717 Dec 2027Commissioning ManagerNot started
MHU.5.3.15Performance and efficiency tests: Unit 30%20 Dec 202727 Oct 202705 Jan 2028Commissioning ManagerNot started
MHU.5.3.16Grid code compliance tests: Unit 30%06 Jan 202810 Nov 202719 Jan 2028Grid Connection LeadNot started
MHU.5.3.17Unit 3 reliability run0%20 Jan 202808 Dec 202717 Feb 2028Commissioning ManagerNot started
MHU.5.3.18Milestone: Unit 3 accepted—17 Feb 202808 Dec 202717 Feb 2028Commissioning ManagerNot started
MHU.5.4Commercial operations0%18 Feb 202821 Jan 202829 Mar 2028Commissioning ManagerNot started
MHU.5.4.1Whole-station reliability run0%18 Feb 202822 Dec 202702 Mar 2028Commissioning ManagerNot started
MHU.5.4.2Final compliance report to the market operator0%03 Mar 202807 Jan 202815 Mar 2028Grid Connection LeadNot started
MHU.5.4.3Milestone: Commercial operations date—15 Mar 202807 Jan 202815 Mar 2028Project DirectorNot started
MHU.5.4.4Final handover and close-out0%16 Mar 202821 Jan 202829 Mar 2028Project DirectorNot started
MHU.5.4.5Milestone: Defects liability period starts—29 Mar 202821 Jan 202829 Mar 2028Project DirectorNot started
MHU.5.5Handover readiness0%01 Mar 202713 Oct 202717 Dec 2027Commissioning ManagerNot started
MHU.5.5.1Operations and maintenance manuals0%01 Mar 202725 May 2027Commissioning ManagerNot started
MHU.5.5.2Final as-built drawings0%25 Oct 202713 Oct 202717 Dec 2027Design ManagerNot started
MHU.5.5.3Operator training0%18 Oct 202706 Oct 202710 Dec 2027Commissioning ManagerNot started
MHU.5.5.4Spares and special tools delivered0%21 Jul 202731 Aug 2027Procurement LeadNot started

323 rows from the Meridian demonstration schedule export. Finish dates in red are past plan or forecast beyond plan.

0
Blocker
2
Critical
2
High
1
Medium

Observed = read directly from the schedule export. Calculated = derived from export values. Modelled = a scenario, not a forecast. Recommended = Cherry's proposal.

1

Tunnelling is suspended at Section 3 and drives the commercial operations date

Critical · Time, cost and resource

Section 3: TBM drive (MHU.2.4.17, Tunnelling Manager) is 60% complete and now finishes 3 Aug 2026, against a baseline of 27 May 2026. Source comment: TBM suspended at Section 3 after it met a fault zone. A geotechnical variation is under assessment and an extension of time claim is active.

Every tunnel section, the lining, the penstock and the unit installations follow it, and the critical path in the export runs through them to commercial operations (38 activities, each at -47 days of float). Commercial operations is 47 working days behind baseline. The variation (MHU.2.4.38) finishes 27 May 2026 and the claim assessment (MHU.2.4.40) 11 Jun 2026, with no determination made.

Tunnelling Manager·Ground conditions·Source: MHU.2.4.17 (ID 85), MHU.2.4.38 (ID 106), MHU.2.4.40 (ID 108)
Observed baseline finish 27 May 26, forecast 3 Aug 26, suspension and claim in source commentsCalculated 47 working days behind at commercial operations
2

Unit 1 synchronises before the grid operator approves energisation

Critical · Time and regulatory

First synchronisation: Unit 1 (MHU.5.3.1, Commissioning Manager) is dated to start 18 Oct 2027, but Energisation approval granted (MHU.5.1.6, Grid Connection Lead) is dated 5 Nov 2027.

The overlap is 15 working days. The TBM chain is the critical path as dated, so this link is not visible in the headline float. If energisation comes first (modelled), commercial operations moves from 15 Mar 2028 to 5 Apr 2028: 15 more working days, or 3% of the time remaining, and 62 behind baseline. If it does not, a unit is synchronised to the grid without approval.

Dependency·Regulatory·Source: MHU.5.3.1 (ID 295), MHU.5.1.6 (ID 279)
Observed synchronisation start 18 Oct 27, approval 5 Nov 27Calculated 15 working days overlapModelled commercial operations 5 Apr 28, +15 working days
3

The 330kV transformer order is waiting on a delayed design review

High · Time and cost

Place order for 330kV generator transformer (MHU.3.5.4, Transformer Package Lead) is not placed and is now dated 14 May 2026 to 20 May 2026, against a baseline of 31 Mar 2026. Source comment: purchase approval is waiting on the electrical design review.

The electrical design review (MHU.3.1.3) is 30 working days behind and cannot close until the revised protection studies (MHU.3.1.2) are complete on 13 May 2026. The export shows the order's float as -15 days. The transformer must then be manufactured and shipped before Unit 1 can be commissioned.

Transformer Package Lead·Supply chain·Source: MHU.3.5.4 (ID 194), MHU.3.1.3 (ID 134), MHU.3.1.2 (ID 133)
Observed order not placed, review behind, in source commentsCalculated 30 working days behind baseline on the review
4

The AEMO grid connection pre-application has not been lodged

High · Time and regulatory

Lodge AEMO grid connection pre-application (MHU.5.1.1, Grid Connection Lead) is 0% complete and dated 27 Apr 2026, against a baseline of 2 Feb 2026. Source comment: the pre-application has not been lodged. Connection agreement negotiation (MHU.5.1.4) is also running behind plan.

The grid connection tasks lead to the energisation approval and carry -62 days of float in the export, 15 working days more negative than the tunnelling chain. That is 62 working days of slip measured to the approved completion date, which is the corrected-scenario variance, because the float honours the energisation link that the dates do not.

Grid Connection Lead·Regulator·Source: MHU.5.1.1 (ID 272), MHU.5.1.4 (ID 275)
Observed not lodged, baseline start 2 Feb 26, forecast 27 Apr 26Calculated 58 working days behind baseline start
5

First Nations artefacts have suspended work at the tailrace

Medium · Time and heritage

Excavate tailrace channel: stage 2 (MHU.2.6.2, Civil Package Manager) is suspended after First Nations artefacts were found. The heritage regulator's assessment (MHU.4.2.4, Heritage Advisor) is 25% complete and finishes 15 May 2026.

Stage 2 now finishes 6 May 2026, 45 working days after baseline. The export shows 354 days of float, so it is not on the critical path today, but the tailrace works stay suspended until the regulator advises.

Heritage Advisor·Heritage·Source: MHU.2.6.2 (ID 122), MHU.4.2.3 (ID 253), MHU.4.2.4 (ID 254)
Observed suspension and assessment in source commentsCalculated 45 working days behind baseline

Actions 1 and 3 depend on executive decisions. See Decisions Required on the Executive Overview.

Observed = read directly from the schedule export. Calculated = derived from export values. Modelled = a scenario, not a forecast. Recommended = Cherry's proposal. Owners and due dates are Cherry recommendations. Urgency is measured from the 27 Apr 2026 status date: This week = due within 5 working days, This month = within 20, Monitor = later. The export does not hold action owners or due dates.

1

Decide whether Unit 1 synchronisation waits for the energisation approval, and re-date to match

Monitor · due 15 Oct

First synchronisation is dated 15 working days before the approval.

Owner: Commissioning Manager, with the Grid Connection Lead. Due: 15 Oct 2027, the last working day before synchronisation is dated. If it waits, move MHU.5.3.1 to start after 5 Nov 2027 and re-date the units, acceptance and commercial operations behind it. If it does not wait, record in writing that the overlap is intended and how the connection is protected. Without a decision the date stays at 15 Mar 2028 when the logic puts it at 5 Apr 2028 (modelled).

Decision required·Source: MHU.5.3.1 (ID 295), MHU.5.1.6 (ID 279)
Observed overlap in the datesModelled commercial operations 5 Apr 28Recommended decision, owner and due date
Pending decision 1
2

Lodge the AEMO grid connection pre-application

This week · due 1 May

It was baselined for 2 Feb 2026 and has not been lodged.

Owner: Grid Connection Lead. Due: 1 May 2026. Every working day it stays unlodged moves the connection agreement, the energisation approval and the grid-dependent commissioning later by the same amount, because the grid chain sits at -62 days of float in the export.

Task action·Grid Connection Lead·Source: MHU.5.1.1 (ID 272)
Observed not lodged, in source commentRecommended owner and due date
3

Release the 330kV transformer purchase approval on a fixed date

This month · due 13 May

The order waits on a design review that is 30 working days behind.

Owner: Transformer Package Lead, with the Electrical Design Lead. Due: 13 May 2026, when the design review is dated to finish. Confirm that the revised protection studies finish 13 May 2026 and that the order can be placed the next working day.

Decision required·Source: MHU.3.5.4 (ID 194), MHU.3.1.3 (ID 134)
Observed order not placedRecommended owner and due date
Pending decision 2
4

Get determinations on the geotechnical variation and the extension of time claim

Monitor · due 27 May

The tunnel drive is suspended while both are open.

Owner: Commercial Manager, with the Geotechnical Engineer. Due: 27 May 2026, when the variation assessment is dated to finish, with the claim assessment to follow on 11 Jun 2026. A restart date for the Section 3 drive is the input the schedule needs to re-date the 38 activities behind it.

Task action·Commercial Manager·Source: MHU.2.4.38 (ID 106), MHU.2.4.40 (ID 108), MHU.2.4.17 (ID 85)
Observed assessments in progress, in source commentsRecommended owner and due date
5

Obtain the heritage regulator's advice and plan the tailrace restart

This month · due 15 May

Tailrace works stay suspended until the regulator advises.

Owner: Heritage Advisor, with the Civil Package Manager. Due: 15 May 2026, when the assessment is dated to finish. The tailrace has 354 working days of float in the export, so there is time to re-sequence, but only if the advice is not late.

Task action·Heritage Advisor·Source: MHU.4.2.4 (ID 254), MHU.2.6.2 (ID 122)
Observed assessment in progress, in source commentsRecommended owner and due date

Approvals and Commercial25 activities · lead: Approvals Lead

100%
All activities complete
Status
TaskStartFinishOwner%Status
Prepare environmental impact assessment07 Jan 202504 Mar 2025Environmental Manager100%Done
Public exhibition of environmental assessment05 Mar 202501 Apr 2025Approvals Lead100%Done
Respond to public submissions02 Apr 202524 Apr 2025Environmental Manager100%Done
Milestone: Environmental approval granted24 Apr 202524 Apr 2025Approvals Lead—Done
Prepare water licence variation application28 Apr 202516 May 2025Approvals Lead100%Done
Water regulator determination of licence variation19 May 202523 Jun 2025Approvals Lead100%Done
Milestone: Water licence variation granted23 Jun 202523 Jun 2025Approvals Lead—Done
Prepare dam safety regulator application05 Mar 202501 Apr 2025Dam Engineer100%Done
Dam safety regulator assessment02 Apr 202516 May 2025Dam Engineer100%Done
Milestone: Dam safety approval granted16 May 202516 May 2025Dam Engineer—Done
Lodge development application28 Apr 202502 May 2025Approvals Lead100%Done
Council assessment of development application05 May 202530 Jun 2025Approvals Lead100%Done
Milestone: Development consent granted30 Jun 202530 Jun 2025Approvals Lead—Done
Milestone: All statutory approvals obtained30 Jun 202530 Jun 2025Project Director—Done
Civil and tunnelling tender19 Feb 202508 Apr 2025Procurement Lead100%Done
Civil and tunnelling tender evaluation09 Apr 202502 May 2025Procurement Lead100%Done
Milestone: Civil and tunnelling contract awarded16 May 202516 May 2025Commercial Manager—Done
Electrical and mechanical package tender12 May 202530 Jun 2025Procurement Lead100%Done
Electrical and mechanical tender evaluation01 Jul 202521 Jul 2025Procurement Lead100%Done
Milestone: Electrical and mechanical contract awarded21 Jul 202521 Jul 2025Commercial Manager—Done
Switchyard and transmission tender12 May 202523 Jun 2025Procurement Lead100%Done
Switchyard and transmission tender evaluation24 Jun 202507 Jul 2025Procurement Lead100%Done
Milestone: Switchyard and transmission contract awarded07 Jul 202507 Jul 2025Commercial Manager—Done
Project management plan and controls baseline07 Jan 202504 Feb 2025Project Director100%Done
Project safety management plan approved05 Feb 202525 Feb 2025Safety Manager100%Done

Design15 activities · lead: Design Manager

100%
All activities complete
Status
TaskStartFinishOwner%Status
Geotechnical investigation: tunnel alignment boreholes07 Jan 202518 Feb 2025Geotechnical Engineer100%Done
Geotechnical laboratory testing19 Feb 202511 Mar 2025Geotechnical Engineer100%Done
Geotechnical baseline report12 Mar 202501 Apr 2025Geotechnical Engineer100%Done
Dam condition assessment07 Jan 202504 Feb 2025Dam Engineer100%Done
Concept design07 Jan 202518 Feb 2025Design Manager100%Done
Detailed design: civil and tunnel works02 Apr 202516 Jun 2025Design Manager100%Done
Detailed design: powerhouse19 Feb 202515 Apr 2025Design Manager100%Done
Detailed design: tunnel lining and steel penstock02 Apr 202523 May 2025Design Manager100%Done
Independent design review17 Jun 202530 Jun 2025Design Manager100%Done
Milestone: Civil design issued for construction30 Jun 202530 Jun 2025Design Manager—Done
Electrical and mechanical design basis report19 Feb 202501 Apr 2025Mechanical Design Lead100%Done
Turbine-generator specification02 Apr 202509 May 2025Mechanical Design Lead100%Done
330kV transformer specification02 Apr 202502 May 2025Electrical Design Lead100%Done
Switchyard and protection basis of design02 Apr 202509 May 2025Electrical Design Lead100%Done
Milestone: Electrical and mechanical design basis approved09 May 202509 May 2025Design Manager—Done

Civil Works34 activities · lead: Civil Package Manager

67%
1 delayed
1 open risk sit in this workstream. See Risk Analysis.
Status
TaskStartFinishOwner%Status
Mobilise civil contractor19 May 202530 May 2025Site Superintendent100%Done
Construct site access road02 Jun 202528 Jul 2025Site Superintendent100%Done
Build site camp and offices02 Jun 202514 Jul 2025Site Superintendent100%Done
Install temporary power and water15 Jul 202504 Aug 2025Site Superintendent100%Done
Establish concrete batch plant05 Aug 202501 Sep 2025Site Superintendent100%Done
Establish survey control network02 Jun 202516 Jun 2025Site Superintendent100%Done
Milestone: Site established01 Sep 202501 Sep 2025Site Superintendent—Done
Cofferdam design check01 Jul 202521 Jul 2025Design Manager100%Done
Construct upstream cofferdam29 Jul 202508 Sep 2025Civil Package Manager100%Done
Excavate river diversion channel29 Jul 202501 Sep 2025Civil Package Manager100%Done
Divert river flow09 Sep 202515 Sep 2025Civil Package Manager100%Done
Dewater the works area16 Sep 202529 Sep 2025Civil Package Manager100%Done
Milestone: Works area dry29 Sep 202529 Sep 2025Civil Package Manager—Done
Excavate intake structure30 Sep 202511 Nov 2025Civil Package Manager100%Done
Intake foundation preparation12 Nov 202502 Dec 2025Civil Package Manager100%Done
Intake formwork and reinforcement03 Dec 202502 Feb 2026Civil Package Manager100%Done
Pour intake walls and roof slab03 Feb 202609 Mar 2026Civil Package Manager100%Done
Install trash racks10 Mar 202630 Mar 2026Civil Package Manager100%Done
Excavate powerhouse pit02 Sep 202525 Nov 2025Civil Package Manager100%Done
Rock support and drainage26 Nov 202509 Jan 2026Civil Package Manager100%Done
Foundation and substructure concrete12 Jan 202623 Mar 2026Civil Package Manager100%Done
Draft tube and scroll case concrete: Unit 124 Mar 202622 Apr 2026Civil Package Manager100%Done
Draft tube and scroll case concrete: Unit 223 Apr 202620 May 2026Civil Package Manager10%In progress
Draft tube and scroll case concrete: Unit 321 May 202618 Jun 2026Civil Package Manager0%Not started
Powerhouse structure to roof19 Jun 202610 Sep 2026Civil Package Manager0%Not started
Powerhouse roof, cladding and weatherproofing11 Sep 202623 Oct 2026Civil Package Manager0%Not started
Milestone: Powerhouse watertight23 Oct 202623 Oct 2026Civil Package Manager—Not started
Powerhouse internal fit-out26 Oct 202627 Nov 2026Civil Package Manager0%Not started
Excavate tailrace channel: stage 112 Jan 202602 Feb 2026Civil Package Manager100%Done
Excavate tailrace channel: stage 2 (find location)03 Feb 202606 May 2026Civil Package Manager40%Delayed
Excavate remaining tailrace channel after heritage clearance01 Jun 202622 Jun 2026Civil Package Manager0%Not started
Tailrace concrete lining23 Jun 202603 Aug 2026Civil Package Manager0%Not started
Tailrace outlet structure04 Aug 202607 Sep 2026Civil Package Manager0%Not started
Milestone: Tailrace complete07 Sep 202607 Sep 2026Civil Package Manager—Not started
Linked risks
Risk 5
First Nations artefacts have suspended work at the tailrace
Excavate tailrace channel: stage 2 (MHU.2.6.2, Civil Package Manager) is suspended after First Nations artefacts were found. The heritage regulator's ...
Linked actions
Action 5This month · due 15 May
Obtain the heritage regulator's advice and plan the tailrace restart
Tailrace works stay suspended until the regulator advises.

Tunnelling40 activities · lead: Tunnelling Manager

49%
1 delayed, 21 with negative float
1 open risk sit in this workstream. See Risk Analysis.
Status
TaskStartFinishOwner%Status
TBM design and manufacture19 May 202525 Aug 2025Tunnelling Manager100%Done
TBM shipping and delivery to site26 Aug 202515 Sep 2025Tunnelling Manager100%Done
TBM assembly and launch-chamber commissioning16 Sep 202521 Oct 2025Tunnelling Manager100%Done
Construct tunnel portal and launch pit02 Sep 202507 Oct 2025Civil Package Manager100%Done
Milestone: TBM launched21 Oct 202521 Oct 2025Tunnelling Manager—Done
Section 1: set up and survey22 Oct 202528 Oct 2025Tunnelling Manager100%Done
Section 1: TBM drive29 Oct 202509 Dec 2025Tunnelling Manager100%Done
Section 1: ground support and segment lining10 Dec 202523 Dec 2025Tunnelling Manager100%Done
Section 1: grouting and survey check24 Dec 202502 Jan 2026Tunnelling Manager100%Done
Milestone: Section 1 complete02 Jan 202602 Jan 2026Tunnelling Manager—Done
Section 2: set up and survey05 Jan 202609 Jan 2026Tunnelling Manager100%Done
Section 2: TBM drive12 Jan 202602 Mar 2026Tunnelling Manager100%Done
Section 2: ground support and segment lining03 Mar 202616 Mar 2026Tunnelling Manager100%Done
Section 2: grouting and survey check17 Mar 202623 Mar 2026Tunnelling Manager100%Done
Milestone: Section 2 complete23 Mar 202623 Mar 2026Tunnelling Manager—Done
Section 3: set up and survey24 Mar 202630 Mar 2026Tunnelling Manager100%Done
Section 3: TBM drive31 Mar 202603 Aug 2026Tunnelling Manager60%Delayed
Section 3: ground support and segment lining04 Aug 202617 Aug 2026Tunnelling Manager0%Not started
Section 3: grouting and survey check18 Aug 202624 Aug 2026Tunnelling Manager0%Not started
Milestone: Section 3 complete24 Aug 202624 Aug 2026Tunnelling Manager—Not started
Section 4: set up and survey25 Aug 202631 Aug 2026Tunnelling Manager0%Not started
Section 4: TBM drive01 Sep 202627 Oct 2026Tunnelling Manager0%Not started
Section 4: ground support and segment lining28 Oct 202610 Nov 2026Tunnelling Manager0%Not started
Section 4: grouting and survey check11 Nov 202617 Nov 2026Tunnelling Manager0%Not started
Milestone: Section 4 complete17 Nov 202617 Nov 2026Tunnelling Manager—Not started
Section 5: set up and survey18 Nov 202624 Nov 2026Tunnelling Manager0%Not started
Section 5: TBM drive25 Nov 202615 Jan 2027Tunnelling Manager0%Not started
Section 5: ground support and segment lining18 Jan 202701 Feb 2027Tunnelling Manager0%Not started
Section 5: grouting and survey check02 Feb 202708 Feb 2027Tunnelling Manager0%Not started
Milestone: Section 5 complete08 Feb 202708 Feb 2027Tunnelling Manager—Not started
Milestone: TBM breakthrough at powerhouse08 Feb 202708 Feb 2027Tunnelling Manager—Not started
Tunnel final concrete lining09 Feb 202722 Mar 2027Tunnelling Manager0%Not started
Install steel penstock liner23 Mar 202726 May 2027Tunnelling Manager0%Not started
Penstock pressure test27 May 202709 Jun 2027Tunnelling Manager0%Not started
Penstock flushing, cleaning and inspection10 Jun 202701 Jul 2027Tunnelling Manager0%Not started
Install penstock instrumentation and monitoring02 Jul 202729 Jul 2027Tunnelling Manager0%Not started
Milestone: Penstock complete29 Jul 202729 Jul 2027Tunnelling Manager—Not started
Assess geotechnical variation at Section 331 Mar 202627 May 2026Geotechnical Engineer35%In progress
Contractor lodges extension of time claim31 Mar 202615 Apr 2026Commercial Manager100%Done
Assess extension of time claim16 Apr 202611 Jun 2026Commercial Manager25%In progress
Linked risks
Risk 1
Tunnelling is suspended at Section 3 and drives the commercial operations date
Section 3: TBM drive (MHU.2.4.17, Tunnelling Manager) is 60% complete and now finishes 3 Aug 2026, against a baseline of 27 May 2026. Source comment: ...
Linked actions
Action 4Monitor · due 27 May
Get determinations on the geotechnical variation and the extension of time claim
The tunnel drive is suspended while both are open.

Dam Works6 activities · lead: Dam Engineer

100%
All activities complete
Status
TaskStartFinishOwner%Status
Dam crest and parapet refurbishment02 Sep 202504 Nov 2025Dam Engineer100%Done
Spillway gate refurbishment02 Sep 202525 Nov 2025Dam Engineer100%Done
Dam instrumentation upgrade05 Nov 202516 Dec 2025Dam Engineer100%Done
Seepage monitoring system17 Dec 202516 Jan 2026Dam Engineer100%Done
Reservoir drawdown and refill plan26 Nov 202516 Dec 2025Dam Engineer100%Done
Milestone: Dam works complete16 Jan 202616 Jan 2026Dam Engineer—Done

Electrical27 activities · lead: Electrical Design Lead

32%
1 delayed, 9 with negative float
1 open risk sit in this workstream. See Risk Analysis.
Status
TaskStartFinishOwner%Status
Electrical single line and protection design05 Jan 202602 Mar 2026Electrical Design Lead100%Done
Generator protection studies03 Mar 202613 May 2026Electrical Design Lead60%In progress
Electrical design review: 330kV and generator protection03 Mar 202613 May 2026Electrical Design Lead30%Delayed
Issue electrical drawings for construction14 May 202611 Jun 2026Electrical Design Lead0%Not started
Milestone: Electrical design approved11 Jun 202611 Jun 2026Electrical Design Lead—Not started
Install power and control cabling: Unit 105 Mar 202712 Apr 2027Site Superintendent0%Not started
Install power and control cabling: Unit 227 Apr 202731 May 2027Site Superintendent0%Not started
Install power and control cabling: Unit 316 Jun 202720 Jul 2027Site Superintendent0%Not started
Prepare transformer purchase specification05 May 202523 May 2025Transformer Package Lead100%Done
Transformer tender26 May 202530 Jun 2025Procurement Lead100%Done
Transformer tender evaluation and recommendation01 Jul 202514 Jul 2025Procurement Lead100%Done
Place order for 330kV generator transformer14 May 202620 May 2026Transformer Package Lead0%Not started
Manufacture 330kV generator transformer21 May 202604 Mar 2027Transformer Package Lead0%Not started
Transformer factory acceptance test05 Mar 202725 Mar 2027Quality Manager0%Not started
Ship transformer to site30 Mar 202710 May 2027Procurement Lead0%Not started
Deliver and position transformer on plinth11 May 202724 May 2027Site Superintendent0%Not started
Transformer installation, oil fill and settling25 May 202706 Jul 2027Site Superintendent0%Not started
Transformer site tests07 Jul 202703 Aug 2027Electrical Design Lead0%Not started
Milestone: Transformer ready for energisation03 Aug 202703 Aug 2027Transformer Package Lead—Not started
Switchyard civil works02 Sep 202528 Oct 2025Civil Package Manager100%Done
Erect switchyard steel structures29 Oct 202509 Dec 2025Site Superintendent100%Done
Install circuit breakers and disconnectors10 Dec 202523 Jan 2026Site Superintendent100%Done
Install protection and control panels12 Jun 202616 Jul 2026Electrical Design Lead0%Not started
Terminate high-voltage lines and cables17 Jul 202613 Aug 2026Electrical Design Lead0%Not started
Earthing and lightning protection10 Dec 202502 Jan 2026Site Superintendent100%Done
Milestone: Switchyard complete13 Aug 202613 Aug 2026Electrical Design Lead—Not started
Auxiliary AC and DC supplies26 Oct 202611 Dec 2026Electrical Design Lead0%Not started
Linked risks
Risk 3
The 330kV transformer order is waiting on a delayed design review
Place order for 330kV generator transformer (MHU.3.5.4, Transformer Package Lead) is not placed and is now dated 14 May 2026 to 20 May 2026, against ...
Linked actions
Action 3This month · due 13 May
Release the 330kV transformer purchase approval on a fixed date
The order waits on a design review that is 30 working days behind.

Mechanical49 activities · lead: Site Superintendent

53%
3 with negative float
Status
TaskStartFinishOwner%Status
Final turbine and generator design approval22 Jul 202518 Aug 2025Mechanical Design Lead100%Done
Manufacture turbine, runner and spiral case: Unit 119 Aug 202523 Jan 2026Mechanical Design Lead100%Done
Manufacture generator stator and rotor: Unit 119 Aug 202509 Jan 2026Mechanical Design Lead100%Done
Factory acceptance test: Unit 1 turbine27 Jan 202609 Feb 2026Quality Manager100%Done
Factory acceptance test: Unit 1 generator12 Jan 202623 Jan 2026Quality Manager100%Done
Ship Unit 1 to site10 Feb 202630 Mar 2026Procurement Lead100%Done
Milestone: Unit 1 delivered to site30 Mar 202630 Mar 2026Procurement Lead—Done
Manufacture turbine, runner and spiral case: Unit 201 Dec 202511 May 2026Mechanical Design Lead90%In progress
Manufacture generator stator and rotor: Unit 201 Dec 202527 Apr 2026Mechanical Design Lead99%In progress
Factory acceptance test: Unit 2 turbine12 May 202625 May 2026Quality Manager0%Not started
Factory acceptance test: Unit 2 generator28 Apr 202611 May 2026Quality Manager0%Not started
Ship Unit 2 to site26 May 202614 Jul 2026Procurement Lead0%Not started
Milestone: Unit 2 delivered to site14 Jul 202614 Jul 2026Procurement Lead—Not started
Manufacture turbine, runner and spiral case: Unit 302 Mar 202605 Aug 2026Mechanical Design Lead35%In progress
Manufacture generator stator and rotor: Unit 302 Mar 202622 Jul 2026Mechanical Design Lead38%In progress
Factory acceptance test: Unit 3 turbine06 Aug 202619 Aug 2026Quality Manager0%Not started
Factory acceptance test: Unit 3 generator23 Jul 202605 Aug 2026Quality Manager0%Not started
Ship Unit 3 to site20 Aug 202608 Oct 2026Procurement Lead0%Not started
Milestone: Unit 3 delivered to site08 Oct 202608 Oct 2026Procurement Lead—Not started
Manufacture intake gates22 Jul 202528 Oct 2025Mechanical Design Lead100%Done
Deliver intake gates to site29 Oct 202518 Nov 2025Procurement Lead100%Done
Install intake gates31 Mar 202629 Apr 2026Site Superintendent85%In progress
Manufacture main inlet valves (three)22 Jul 202525 Nov 2025Mechanical Design Lead100%Done
Deliver main inlet valves to site26 Nov 202502 Jan 2026Procurement Lead100%Done
Install main inlet valve: Unit 130 Jul 202719 Aug 2027Site Superintendent0%Not started
Install main inlet valve: Unit 220 Aug 202709 Sep 2027Site Superintendent0%Not started
Install main inlet valve: Unit 310 Sep 202730 Sep 2027Site Superintendent0%Not started
Manufacture and deliver powerhouse overhead crane22 Jul 202504 Nov 2025Mechanical Design Lead100%Done
Install and load test overhead crane11 Sep 202616 Oct 2026Site Superintendent0%Not started
Install draft tube liner and embedded parts: Unit 126 Oct 202613 Nov 2026Site Superintendent0%Not started
Install spiral case: Unit 116 Nov 202611 Dec 2026Site Superintendent0%Not started
Install turbine runner and shaft: Unit 114 Dec 202620 Jan 2027Site Superintendent0%Not started
Install generator stator and rotor: Unit 121 Jan 202704 Mar 2027Site Superintendent0%Not started
Install auxiliary piping and systems: Unit 121 Jan 202704 Mar 2027Site Superintendent0%Not started
Milestone: Unit 1 mechanically complete12 Apr 202712 Apr 2027Site Superintendent—Not started
Install draft tube liner and embedded parts: Unit 214 Dec 202606 Jan 2027Site Superintendent0%Not started
Install spiral case: Unit 207 Jan 202704 Feb 2027Site Superintendent0%Not started
Install turbine runner and shaft: Unit 205 Feb 202711 Mar 2027Site Superintendent0%Not started
Install generator stator and rotor: Unit 212 Mar 202726 Apr 2027Site Superintendent0%Not started
Install auxiliary piping and systems: Unit 212 Mar 202726 Apr 2027Site Superintendent0%Not started
Milestone: Unit 2 mechanically complete31 May 202731 May 2027Site Superintendent—Not started
Install draft tube liner and embedded parts: Unit 305 Feb 202725 Feb 2027Site Superintendent0%Not started
Install spiral case: Unit 326 Feb 202725 Mar 2027Site Superintendent0%Not started
Install turbine runner and shaft: Unit 330 Mar 202703 May 2027Site Superintendent0%Not started
Install generator stator and rotor: Unit 304 May 202715 Jun 2027Site Superintendent0%Not started
Install auxiliary piping and systems: Unit 304 May 202715 Jun 2027Site Superintendent0%Not started
Milestone: Unit 3 mechanically complete20 Jul 202720 Jul 2027Site Superintendent—Not started
Fire detection and protection systems26 Oct 202627 Nov 2026Site Superintendent0%Not started
Cooling water and drainage systems26 Oct 202618 Dec 2026Site Superintendent0%Not started

Controls and SCADA7 activities · lead: Controls Lead

55%
On plan
Status
TaskStartFinishOwner%Status
Control system detailed design22 Jul 202501 Sep 2025Controls Lead100%Done
Control system hardware manufacture02 Sep 202525 Nov 2025Controls Lead100%Done
Control system factory acceptance test26 Nov 202509 Dec 2025Quality Manager100%Done
Deliver control system to site10 Dec 202509 Jan 2026Procurement Lead100%Done
Install control cabinets and operator room26 Oct 202627 Nov 2026Controls Lead0%Not started
Cable installation: control and instrumentation30 Nov 202604 Feb 2027Controls Lead0%Not started
Connect SCADA to remote operations centre05 Feb 202718 Mar 2027Controls Lead0%Not started

Environment and Heritage41 activities · lead: Environmental Manager

43%
1 with negative float
1 open risk sit in this workstream. See Risk Analysis.
Status
TaskStartFinishOwner%Status
Environmental management plan approved28 Apr 202516 May 2025Environmental Manager100%Done
Water quality monitoring and report: Q2 202519 May 202506 Jun 2025Environmental Manager100%Done
Water quality monitoring and report: Q3 202501 Jul 202521 Jul 2025Environmental Manager100%Done
Water quality monitoring and report: Q4 202501 Oct 202522 Oct 2025Environmental Manager100%Done
Water quality monitoring and report: Q1 202602 Jan 202622 Jan 2026Environmental Manager100%Done
Water quality monitoring and report: Q2 202601 Apr 202623 Apr 2026Environmental Manager100%Done
Water quality monitoring and report: Q3 202601 Jul 202621 Jul 2026Environmental Manager0%Not started
Water quality monitoring and report: Q4 202601 Oct 202622 Oct 2026Environmental Manager0%Not started
Water quality monitoring and report: Q1 202704 Jan 202722 Jan 2027Environmental Manager0%Not started
Water quality monitoring and report: Q2 202701 Apr 202721 Apr 2027Environmental Manager0%Not started
Water quality monitoring and report: Q3 202701 Jul 202721 Jul 2027Environmental Manager0%Not started
Water quality monitoring and report: Q4 202701 Oct 202722 Oct 2027Environmental Manager0%Not started
Water quality monitoring and report: Q1 202804 Jan 202824 Jan 2028Environmental Manager0%Not started
Erosion and sediment control audit: Q2 202601 Apr 202614 Apr 2026Environmental Manager100%Done
Erosion and sediment control audit: Q3 202601 Jul 202610 Jul 2026Environmental Manager0%Not started
Erosion and sediment control audit: Q4 202601 Oct 202613 Oct 2026Environmental Manager0%Not started
Erosion and sediment control audit: Q1 202704 Jan 202713 Jan 2027Environmental Manager0%Not started
Erosion and sediment control audit: Q2 202701 Apr 202712 Apr 2027Environmental Manager0%Not started
Erosion and sediment control audit: Q3 202701 Jul 202712 Jul 2027Environmental Manager0%Not started
Erosion and sediment control audit: Q4 202701 Oct 202713 Oct 2027Environmental Manager0%Not started
Fish passage design28 Apr 202506 Jun 2025Environmental Manager100%Done
Construct fish passage10 Mar 202613 May 2026Civil Package Manager71%In progress
Fish passage testing and sign-off14 May 202603 Jun 2026Environmental Manager0%Not started
Revegetation plan19 May 202530 May 2025Environmental Manager100%Done
Revegetation stage 1: construction areas02 Sep 202529 Sep 2025Environmental Manager100%Done
Revegetation stage 2: spoil areas09 Feb 202708 Mar 2027Environmental Manager0%Not started
Final site stabilisation and rehabilitation09 Mar 202714 Apr 2027Environmental Manager0%Not started
Pre-construction heritage survey05 Mar 202501 Apr 2025Heritage Advisor100%Done
Heritage management plan approved28 Apr 202509 May 2025Heritage Advisor100%Done
Record artefacts found at tailrace and secure the area16 Mar 202618 Mar 2026Heritage Advisor100%Done
Heritage regulator assessment of tailrace find19 Mar 202615 May 2026Heritage Advisor25%In progress
Consult First Nations representatives on management of the find19 Mar 202615 May 2026Heritage Advisor40%In progress
Update heritage management plan18 May 202629 May 2026Heritage Advisor0%Not started
Milestone: Heritage clearance for tailrace works29 May 202629 May 2026Heritage Advisor—Not started
Heritage monitoring during remaining tailrace excavation01 Jun 202613 Jul 2026Heritage Advisor0%Not started
Community liaison committee meeting and update 105 May 202509 May 2025Community Liaison Lead100%Done
Community liaison committee meeting and update 203 Nov 202507 Nov 2025Community Liaison Lead100%Done
Community liaison committee meeting and update 304 May 202608 May 2026Community Liaison Lead0%Not started
Community liaison committee meeting and update 402 Nov 202606 Nov 2026Community Liaison Lead0%Not started
Community liaison committee meeting and update 503 May 202707 May 2027Community Liaison Lead0%Not started
Community liaison committee meeting and update 601 Nov 202705 Nov 2027Community Liaison Lead0%Not started
Linked risks
Risk 5
First Nations artefacts have suspended work at the tailrace
Excavate tailrace channel: stage 2 (MHU.2.6.2, Civil Package Manager) is suspended after First Nations artefacts were found. The heritage regulator's ...
Linked actions
Action 5This month · due 15 May
Obtain the heritage regulator's advice and plan the tailrace restart
Tailrace works stay suspended until the regulator advises.

Grid Connection12 activities · lead: Grid Connection Lead

0%
10 with negative float
2 open risks sit in this workstream. See Risk Analysis.
Status
TaskStartFinishOwner%Status
Lodge AEMO grid connection pre-application27 Apr 202608 May 2026Grid Connection Lead0%Not started
AEMO and network provider pre-application response11 May 202628 Sep 2026Grid Connection Lead0%Not started
Prepare and submit full connection application29 Sep 202608 Jan 2027Grid Connection Lead0%Not started
Connection agreement negotiation11 Jan 202705 Nov 2027Grid Connection Lead0%Not started
Generator performance standards agreed11 Jan 202701 Jul 2027Grid Connection Lead0%Not started
Milestone: Connection agreement executed05 Nov 202705 Nov 2027Grid Connection Lead—Not started
Power system model validation11 Jan 202707 Apr 2027Grid Connection Lead0%Not started
Milestone: Energisation approval granted05 Nov 202705 Nov 2027Grid Connection Lead—Not started
Grid code compliance tests: Unit 122 Nov 202703 Dec 2027Grid Connection Lead0%Not started
Grid code compliance tests: Unit 213 Dec 202724 Dec 2027Grid Connection Lead0%Not started
Grid code compliance tests: Unit 306 Jan 202819 Jan 2028Grid Connection Lead0%Not started
Final compliance report to the market operator03 Mar 202815 Mar 2028Grid Connection Lead0%Not started
Linked risks
Risk 2
Unit 1 synchronises before the grid operator approves energisation
First synchronisation: Unit 1 (MHU.5.3.1, Commissioning Manager) is dated to start 18 Oct 2027, but Energisation approval granted (MHU.5.1.6, Grid ...
Risk 4
The AEMO grid connection pre-application has not been lodged
Lodge AEMO grid connection pre-application (MHU.5.1.1, Grid Connection Lead) is 0% complete and dated 27 Apr 2026, against a baseline of 2 Feb 2026. ...
Linked actions
Action 1Monitor · due 15 Oct
Decide whether Unit 1 synchronisation waits for the energisation approval, and re-date to match
First synchronisation is dated 15 working days before the approval.
Action 2This week · due 1 May
Lodge the AEMO grid connection pre-application
It was baselined for 2 Feb 2026 and has not been lodged.

Commissioning36 activities · lead: Commissioning Manager

0%
27 with negative float
1 open risk sit in this workstream. See Risk Analysis.
Status
TaskStartFinishOwner%Status
Prepare commissioning plan and test procedures12 Jun 202606 Aug 2026Commissioning Manager0%Not started
Commission switchyard and transformer04 Aug 202731 Aug 2027Commissioning Manager0%Not started
Commission auxiliary systems21 Dec 202628 Jan 2027Commissioning Manager0%Not started
Commission control and SCADA systems19 Mar 202703 May 2027Commissioning Manager0%Not started
Inspection and dry checks: Unit 120 Aug 202709 Sep 2027Commissioning Manager0%Not started
Insulation and protection tests: Unit 110 Sep 202723 Sep 2027Commissioning Manager0%Not started
Wet commissioning without load: Unit 124 Sep 202715 Oct 2027Commissioning Manager0%Not started
Inspection and dry checks: Unit 210 Sep 202730 Sep 2027Commissioning Manager0%Not started
Insulation and protection tests: Unit 201 Oct 202715 Oct 2027Commissioning Manager0%Not started
Wet commissioning without load: Unit 218 Oct 202705 Nov 2027Commissioning Manager0%Not started
Inspection and dry checks: Unit 301 Oct 202722 Oct 2027Commissioning Manager0%Not started
Insulation and protection tests: Unit 325 Oct 202705 Nov 2027Commissioning Manager0%Not started
Wet commissioning without load: Unit 308 Nov 202726 Nov 2027Commissioning Manager0%Not started
First synchronisation: Unit 118 Oct 202722 Oct 2027Commissioning Manager0%Not started
Load rejection and trip tests: Unit 125 Oct 202705 Nov 2027Commissioning Manager0%Not started
Performance and efficiency tests: Unit 108 Nov 202719 Nov 2027Commissioning Manager0%Not started
Unit 1 reliability run06 Dec 202705 Jan 2028Commissioning Manager0%Not started
Milestone: Unit 1 accepted05 Jan 202805 Jan 2028Commissioning Manager—Not started
First synchronisation: Unit 208 Nov 202712 Nov 2027Commissioning Manager0%Not started
Load rejection and trip tests: Unit 215 Nov 202726 Nov 2027Commissioning Manager0%Not started
Performance and efficiency tests: Unit 229 Nov 202710 Dec 2027Commissioning Manager0%Not started
Unit 2 reliability run29 Dec 202727 Jan 2028Commissioning Manager0%Not started
Milestone: Unit 2 accepted27 Jan 202827 Jan 2028Commissioning Manager—Not started
First synchronisation: Unit 329 Nov 202703 Dec 2027Commissioning Manager0%Not started
Load rejection and trip tests: Unit 306 Dec 202717 Dec 2027Commissioning Manager0%Not started
Performance and efficiency tests: Unit 320 Dec 202705 Jan 2028Commissioning Manager0%Not started
Unit 3 reliability run20 Jan 202817 Feb 2028Commissioning Manager0%Not started
Milestone: Unit 3 accepted17 Feb 202817 Feb 2028Commissioning Manager—Not started
Whole-station reliability run18 Feb 202802 Mar 2028Commissioning Manager0%Not started
Milestone: Commercial operations date15 Mar 202815 Mar 2028Project Director—Not started
Final handover and close-out16 Mar 202829 Mar 2028Project Director0%Not started
Milestone: Defects liability period starts29 Mar 202829 Mar 2028Project Director—Not started
Operations and maintenance manuals01 Mar 202725 May 2027Commissioning Manager0%Not started
Final as-built drawings25 Oct 202717 Dec 2027Design Manager0%Not started
Operator training18 Oct 202710 Dec 2027Commissioning Manager0%Not started
Spares and special tools delivered21 Jul 202731 Aug 2027Procurement Lead0%Not started
Linked risks
Risk 2
Unit 1 synchronises before the grid operator approves energisation
First synchronisation: Unit 1 (MHU.5.3.1, Commissioning Manager) is dated to start 18 Oct 2027, but Energisation approval granted (MHU.5.1.6, Grid ...
Linked actions
Action 1Monitor · due 15 Oct
Decide whether Unit 1 synchronisation waits for the energisation approval, and re-date to match
First synchronisation is dated 15 working days before the approval.

Critical pathFrom the schedule export

The critical path in the export runs from Section 3: TBM drive through the remaining tunnel sections, lining, penstock and unit installations, then commissioning and acceptance of each unit, to Commercial operations date, with negative float at every stage (-47 days). The grid connection chain (MHU.5.1) is not drawn into it because the dates do not respect the link from the energisation approval to Unit 1 synchronisation. The corrected scenario below honours that link and moves commercial operations to 5 Apr 2028. It is a model, not the source schedule.

71
Critical activities · 0d or less float
15d
Unit 1 sync before approval
17
Near-critical · 1 to 10d
38
Activities on the longest path

Sequence: 38 stages, read left to right and top to bottom. Critical activities are counted separately, as the longest path covers more tasks than the stages shown.

Critical path sequence

1MHU.2.4.17Section 3: TBM drive-47d float
→
2MHU.2.4.18Section 3: ground support and segment lining-47d float
→
3MHU.2.4.19Section 3: grouting and survey check-47d float
→
4MHU.2.4.20Section 3 complete-47d float
→
5MHU.2.4.21Section 4: set up and survey-47d float
→
6MHU.2.4.22Section 4: TBM drive-47d float
→
7MHU.2.4.23Section 4: ground support and segment lining-47d float
→
8MHU.2.4.24Section 4: grouting and survey check-47d float
→
9MHU.2.4.25Section 4 complete-47d float
→
10MHU.2.4.26Section 5: set up and survey-47d float
→
11MHU.2.4.27Section 5: TBM drive-47d float
→
12MHU.2.4.28Section 5: ground support and segment lining-47d float
→
13MHU.2.4.29Section 5: grouting and survey check-47d float
→
14MHU.2.4.30Section 5 complete-47d float
→
15MHU.2.4.31TBM breakthrough at powerhouse-47d float
→
16MHU.2.4.32Tunnel final concrete lining-47d float
→
17MHU.2.4.33Install steel penstock liner-47d float
→
18MHU.2.4.34Penstock pressure test-47d float
→
19MHU.2.4.35Penstock flushing, cleaning and inspection-47d float
→
20MHU.2.4.36Install penstock instrumentation and monitoring-47d float
→
21MHU.2.4.37Penstock complete-47d float
→
22MHU.3.3.6Install main inlet valve: Unit 1-47d float
→
23MHU.5.2.5Inspection and dry checks: Unit 1-47d float
→
24MHU.5.2.6Insulation and protection tests: Unit 1-47d float
→
25MHU.5.2.7Wet commissioning without load: Unit 1-47d float
→
26MHU.5.3.1First synchronisation: Unit 1-47d float
→
27MHU.5.3.2Load rejection and trip tests: Unit 1-47d float
→
28MHU.5.3.7First synchronisation: Unit 2-47d float
→
29MHU.5.3.8Load rejection and trip tests: Unit 2-47d float
→
30MHU.5.3.13First synchronisation: Unit 3-47d float
→
31MHU.5.3.14Load rejection and trip tests: Unit 3-47d float
→
32MHU.5.3.15Performance and efficiency tests: Unit 3-47d float
→
33MHU.5.3.16Grid code compliance tests: Unit 3-47d float
→
34MHU.5.3.17Unit 3 reliability run-47d float
→
35MHU.5.3.18Unit 3 accepted-47d float
→
36MHU.5.4.1Whole-station reliability run-47d float
→
37MHU.5.4.2Final compliance report to the market operator-47d float
→
38MHU.5.4.3Commercial operations date-47d float

Critical task detail

WBSTaskDurationPlanned finishForecastOwner
MHU.2.4.17Section 3: TBM drive Alert87d27 May 202603 Aug 2026-47dTunnelling Manager
MHU.2.4.18Section 3: ground support and segment lining10d11 Jun 202617 Aug 2026-47dTunnelling Manager
MHU.2.4.19Section 3: grouting and survey check5d18 Jun 202624 Aug 2026-47dTunnelling Manager
MHU.2.4.20◆ Section 3 complete—18 Jun 202624 Aug 2026-47dTunnelling Manager
MHU.2.4.21Section 4: set up and survey5d25 Jun 202631 Aug 2026-47dTunnelling Manager
MHU.2.4.22Section 4: TBM drive40d20 Aug 202627 Oct 2026-47dTunnelling Manager
MHU.2.4.23Section 4: ground support and segment lining10d03 Sep 202610 Nov 2026-47dTunnelling Manager
MHU.2.4.24Section 4: grouting and survey check5d10 Sep 202617 Nov 2026-47dTunnelling Manager
MHU.2.4.25◆ Section 4 complete—10 Sep 202617 Nov 2026-47dTunnelling Manager
MHU.2.4.26Section 5: set up and survey5d17 Sep 202624 Nov 2026-47dTunnelling Manager
MHU.2.4.27Section 5: TBM drive35d06 Nov 202615 Jan 2027-47dTunnelling Manager
MHU.2.4.28Section 5: ground support and segment lining10d20 Nov 202601 Feb 2027-47dTunnelling Manager
MHU.2.4.29Section 5: grouting and survey check5d27 Nov 202608 Feb 2027-47dTunnelling Manager
MHU.2.4.30◆ Section 5 complete—27 Nov 202608 Feb 2027-47dTunnelling Manager
MHU.2.4.31◆ TBM breakthrough at powerhouse—27 Nov 202608 Feb 2027-47dTunnelling Manager
MHU.2.4.32Tunnel final concrete lining30d13 Jan 202722 Mar 2027-47dTunnelling Manager
MHU.2.4.33Install steel penstock liner45d18 Mar 202726 May 2027-47dTunnelling Manager
MHU.2.4.34Penstock pressure test10d05 Apr 202709 Jun 2027-47dTunnelling Manager
MHU.2.4.35Penstock flushing, cleaning and inspection15d26 Apr 202701 Jul 2027-47dTunnelling Manager
MHU.2.4.36Install penstock instrumentation and monitoring20d24 May 202729 Jul 2027-47dTunnelling Manager
MHU.2.4.37◆ Penstock complete—24 May 202729 Jul 2027-47dTunnelling Manager
MHU.3.1.3Electrical design review: 330kV and generator protection50d30 Mar 202613 May 2026-15dElectrical Design Lead
MHU.3.3.6Install main inlet valve: Unit 115d15 Jun 202719 Aug 2027-47dSite Superintendent
MHU.3.3.7Install main inlet valve: Unit 215d06 Jul 202709 Sep 2027-47dSite Superintendent
MHU.3.3.8Install main inlet valve: Unit 315d27 Jul 202730 Sep 2027-47dSite Superintendent
MHU.3.5.4Place order for 330kV generator transformer5d08 Apr 202620 May 2026-15dTransformer Package Lead
MHU.3.5.5Manufacture 330kV generator transformer200d20 Jan 202704 Mar 2027-15dTransformer Package Lead
MHU.3.5.6Transformer factory acceptance test15d11 Feb 202725 Mar 2027-15dQuality Manager
MHU.3.5.7Ship transformer to site30d25 Mar 202710 May 2027-15dProcurement Lead
MHU.3.5.8Deliver and position transformer on plinth10d12 Apr 202724 May 2027-15dSite Superintendent
MHU.3.5.9Transformer installation, oil fill and settling30d24 May 202706 Jul 2027-15dSite Superintendent
MHU.3.5.10Transformer site tests20d22 Jun 202703 Aug 2027-15dElectrical Design Lead
MHU.3.5.11◆ Transformer ready for energisation—22 Jun 202703 Aug 2027-15dTransformer Package Lead
MHU.4.1.13Water quality monitoring and report: Q1 202815d24 Jan 202824 Jan 2028-11dEnvironmental Manager
MHU.5.1.1Lodge AEMO grid connection pre-application10d13 Feb 202608 May 2026-62dGrid Connection Lead
MHU.5.1.2AEMO and network provider pre-application response100d08 Jul 202628 Sep 2026-62dGrid Connection Lead
MHU.5.1.3Prepare and submit full connection application70d15 Oct 202608 Jan 2027-62dGrid Connection Lead
MHU.5.1.4Connection agreement negotiation210d05 Jul 202705 Nov 2027-62dGrid Connection Lead
MHU.5.1.6◆ Connection agreement executed—05 Jul 202705 Nov 2027-62dGrid Connection Lead
MHU.5.1.8◆ Energisation approval granted Alert—05 Jul 202705 Nov 2027-62dGrid Connection Lead
MHU.5.2.2Commission switchyard and transformer20d20 Jul 202731 Aug 2027-15dCommissioning Manager
MHU.5.2.5Inspection and dry checks: Unit 115d06 Jul 202709 Sep 2027-47dCommissioning Manager
MHU.5.2.6Insulation and protection tests: Unit 110d20 Jul 202723 Sep 2027-47dCommissioning Manager
MHU.5.2.7Wet commissioning without load: Unit 115d10 Aug 202715 Oct 2027-47dCommissioning Manager
MHU.5.2.8Inspection and dry checks: Unit 215d27 Jul 202730 Sep 2027-47dCommissioning Manager
MHU.5.2.9Insulation and protection tests: Unit 210d10 Aug 202715 Oct 2027-47dCommissioning Manager
MHU.5.2.10Wet commissioning without load: Unit 215d31 Aug 202705 Nov 2027-47dCommissioning Manager
MHU.5.2.11Inspection and dry checks: Unit 315d17 Aug 202722 Oct 2027-47dCommissioning Manager
MHU.5.2.12Insulation and protection tests: Unit 310d31 Aug 202705 Nov 2027-47dCommissioning Manager
MHU.5.2.13Wet commissioning without load: Unit 315d21 Sep 202726 Nov 2027-47dCommissioning Manager
MHU.5.3.1First synchronisation: Unit 1 Alert5d17 Aug 202722 Oct 2027-47dCommissioning Manager
MHU.5.3.2Load rejection and trip tests: Unit 110d31 Aug 202705 Nov 2027-47dCommissioning Manager
MHU.5.3.3Performance and efficiency tests: Unit 110d14 Sep 202719 Nov 2027-17dCommissioning Manager
MHU.5.3.4Grid code compliance tests: Unit 110d28 Sep 202703 Dec 2027-17dGrid Connection Lead
MHU.5.3.5Unit 1 reliability run20d27 Oct 202705 Jan 2028-17dCommissioning Manager
MHU.5.3.6◆ Unit 1 accepted—27 Oct 202705 Jan 2028-17dCommissioning Manager
MHU.5.3.7First synchronisation: Unit 25d07 Sep 202712 Nov 2027-47dCommissioning Manager
MHU.5.3.8Load rejection and trip tests: Unit 210d21 Sep 202726 Nov 2027-47dCommissioning Manager
MHU.5.3.9Performance and efficiency tests: Unit 210d06 Oct 202710 Dec 2027-32dCommissioning Manager
MHU.5.3.10Grid code compliance tests: Unit 210d20 Oct 202724 Dec 2027-32dGrid Connection Lead
MHU.5.3.11Unit 2 reliability run20d17 Nov 202727 Jan 2028-32dCommissioning Manager
MHU.5.3.12◆ Unit 2 accepted—17 Nov 202727 Jan 2028-32dCommissioning Manager
MHU.5.3.13First synchronisation: Unit 35d28 Sep 202703 Dec 2027-47dCommissioning Manager
MHU.5.3.14Load rejection and trip tests: Unit 310d13 Oct 202717 Dec 2027-47dCommissioning Manager
MHU.5.3.15Performance and efficiency tests: Unit 310d27 Oct 202705 Jan 2028-47dCommissioning Manager
MHU.5.3.16Grid code compliance tests: Unit 310d10 Nov 202719 Jan 2028-47dGrid Connection Lead
MHU.5.3.17Unit 3 reliability run20d08 Dec 202717 Feb 2028-47dCommissioning Manager
MHU.5.3.18◆ Unit 3 accepted—08 Dec 202717 Feb 2028-47dCommissioning Manager
MHU.5.4.1Whole-station reliability run10d22 Dec 202702 Mar 2028-47dCommissioning Manager
MHU.5.4.2Final compliance report to the market operator9d07 Jan 202815 Mar 2028-47dGrid Connection Lead
MHU.5.4.3◆ Commercial operations date—07 Jan 202815 Mar 2028-47dProject Director

All 71 critical activities are shown. This table is not curated or capped.

Dependency-corrected scenarioModelled, not a forecast

If First synchronisation: Unit 1 waits for the energisation approval (MHU.5.1.6, 5 Nov 2027), synchronisation starts 8 Nov 2027 instead of 18 Oct 2027. Commercial operations moves 15 working days to 5 Apr 2028, which is 62 working days after the approved baseline (7 Jan 2028).

WBSDriving chainIn the exportCorrectedShift (working days)
MHU.5.1.8◆ Energisation approval granted2027-11-052027-11-05no change
MHU.5.3.1First synchronisation: Unit 12027-10-222027-11-12+15d
MHU.5.3.2Load rejection and trip tests: Unit 12027-11-052027-11-26+15d
MHU.5.3.7First synchronisation: Unit 22027-11-122027-12-03+15d
MHU.5.3.8Load rejection and trip tests: Unit 22027-11-262027-12-17+15d
MHU.5.3.13First synchronisation: Unit 32027-12-032027-12-24+15d
MHU.5.3.14Load rejection and trip tests: Unit 32027-12-172028-01-12+15d
MHU.5.3.15Performance and efficiency tests: Unit 32028-01-052028-01-27+15d
MHU.5.3.16Grid code compliance tests: Unit 32028-01-192028-02-10+15d
MHU.5.3.17Unit 3 reliability run2028-02-172028-03-09+15d
MHU.5.3.18◆ Unit 3 accepted2028-02-172028-03-09+15d
MHU.5.4.1Whole-station reliability run2028-03-022028-03-23+15d
MHU.5.4.2Final compliance report to the market operator2028-03-152028-04-05+15d
MHU.5.4.3◆ Commercial operations date2028-03-152028-04-05+15d

Modelled. Only the energisation-to-synchronisation link is honoured. 24 of 292 activities move, all downstream of Unit 1 synchronisation. Finish-to-start, no lag, no pulling earlier, no resource or contingency changes. The 15 working days equal the 15-day overlap, because the duration of the work behind synchronisation is unchanged.

Near-critical tasks

MHU.2.5.5
Draft tube and scroll case concrete: Unit 25 working days of float

MHU.2.5.6
Draft tube and scroll case concrete: Unit 35 working days of float

MHU.2.5.7
Powerhouse structure to roof5 working days of float

MHU.2.5.8
Powerhouse roof, cladding and weatherproofing5 working days of float

MHU.2.5.9
Milestone: Powerhouse watertight5 working days of float

MHU.3.4.1
Install draft tube liner and embedded parts: Unit 15 working days of float

MHU.3.4.2
Install spiral case: Unit 15 working days of float

MHU.3.4.8
Install draft tube liner and embedded parts: Unit 25 working days of float

MHU.3.4.9
Install spiral case: Unit 25 working days of float

MHU.3.4.15
Install draft tube liner and embedded parts: Unit 35 working days of float

MHU.3.4.16
Install spiral case: Unit 35 working days of float

MHU.3.4.17
Install turbine runner and shaft: Unit 35 working days of float

MHU.3.4.18
Install generator stator and rotor: Unit 35 working days of float

MHU.3.4.19
Install auxiliary piping and systems: Unit 35 working days of float

MHU.3.4.20
Install power and control cabling: Unit 35 working days of float

MHU.3.4.21
Milestone: Unit 3 mechanically complete5 working days of float

MHU.3.3.10
Install and load test overhead crane10 working days of float

Float distribution

0d or less (critical)71 tasks
1–10d17 tasks
11–30d12 tasks
> 30d65 tasks

How this was calculatedAssumptions and limits

  • Source. Every date, percentage, float and comment comes from the schedule export at the 27 Apr 2026 status date. Cherry adds only labelled calculations, scenarios and recommendations.
  • Links. The export lists predecessors by row ID and treats every link as finish-to-start. It has no lag, constraint or link-type column, so none is assumed. A task starts the next working day after its predecessor finishes; a milestone may share its predecessor's date.
  • Calendar. Working days are Monday to Friday excluding an illustrative NSW public-holiday list. The export names the list but does not contain it, so Cherry cannot verify it.
  • Float. The export's Total Float is working days to the approved completion date (the baseline finish of Commercial operations date). Cherry recomputed it independently for the 165 incomplete activities that carry a float value. It is a hybrid: the backward pass honours the violated link while the dates do not re-propagate, which is why the grid chain reads -62 and the tunnelling chain -47.
  • Corrected scenario. Honours the violated link, pushes the successor later, recomputes finishes from working-day durations and propagates. It never pulls work earlier and does not model resources, contingency or acceleration.
  • % of time remaining. Modelled shift (15 working days) divided by 478 working days from the status date to the as-dated commercial operations date.
  • Progress. Overall 48% is duration-weighted across activities (a milestone counts as one day). Planned 51% applies the same weights to baseline dates at the status date. Phase and workstream percentages use the same method.
  • Near-critical. A fixed 1 to 10 working days. At this project's remaining duration a proportional threshold of 5 percent would be about 24 days, so the count is sensitive to the rule.
  • Workstream status. At risk = any incomplete task with negative float. Watch = no negative float but a task marked Delayed. Otherwise Complete, Not started or On plan.
  • Not assessed. Cost, resources, hard constraints, link types and lag.

Meridian Hydropower Upgrade is a fictional project, built to show how Cherry reads a project schedule export. It does not describe a real project, regulator, utility or project team, and no real organisation has used or endorsed Cherry for it.

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