Australian regulator rejects Transgrid bid to pass cost blowout to consumers
Rule ChangesPreliminary ruling finds the A$1.2 billion Project Energy Connect overrun was foreseeable and the grid will not fail without it
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Overview
Updated 41 minutes agoTransgrid's plan would have added about A$18 to the average household power bill in 2027-28 to cover overruns on Project Energy Connect. Australia's energy regulator said no on September 1, provisionally rejecting the A$1.2 billion recovery bid.
The preliminary ruling says the blowout was foreseeable and the grid will not fail without the project. At stake is who pays when nation-critical energy infrastructure costs spiral. The rejection pushes the cost onto Transgrid's owners, for now.
The Australian Energy Regulator's position is not final. Transgrid can still seek to recover the overspend in the 2028-33 revenue review, where spending judged 'prudent and efficient' can enter its asset base. Memery, a consumer advocate, said approval would have opened the door to shifting project risk from businesses onto households.
Why it matters
The ruling decides whether households or shareholders pay for cost blowouts on the transmission lines Australia's renewable transition depends on.
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People Involved
Organizations Involved
Transgrid operates New South Wales' high-voltage transmission network and is building the NSW section of Project Energy Connect.
Australia's independent regulator of electricity and gas network revenues.
South Australia's high-voltage transmission network operator.
The Clough-Elecnor consortium hired to build Transgrid's section of Project Energy Connect.
One of Australia's largest energy retailers and generators.
Timeline
December 2022 September 2026
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AER rejects Transgrid's recovery bid
Latest Regulatory decisionPreliminary position says the blowout was foreseeable and the grid will not fail without it.
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Blowout details made public
RevelationThe AER publishes Transgrid's 38-page application, exposing the contractor failure and A$130 million shareholder losses.
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AER opens consultation
RegulatoryThe regulator seeks submissions on whether the blowout meets the reopen criteria in the National Electricity Rules.
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Transgrid applies for recovery
FilingTransgrid asks the AER to reopen its 2023-28 revenue deal and recover A$1.2 billion from consumers.
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ElectraNet finishes SA leg
MilestoneElectraNet completes the 206 km South Australian section on time and on budget.
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Clough enters insolvency
ContractAustralian contractor Clough collapses, disrupting the Secure Energy Joint Venture building Transgrid's line.
Historical Context
3 moments from history that rhyme with this story — and how they unfolded.
V.C. Summer nuclear cancellation (2017)
South Carolina utilities abandoned a two-reactor nuclear expansion at the V.C. Summer plant after costs ballooned and contractor Westinghouse filed for bankruptcy. About US$9 billion had been spent on a project that never produced power.
Customers who funded construction through monthly surcharges were left paying for a cancelled plant, and the utilities' owners took large write-downs.
The failure became a national lesson on construction risk in regulated energy infrastructure and the limits of cost recovery.
Like Project Energy Connect, it combined a contractor collapse, spiraling costs, and a fight over whether customers or owners absorb the loss.
Carillion collapse (2018)
UK construction giant Carillion collapsed into liquidation in January 2018, leaving dozens of public projects unfinished. Taxpayers absorbed the cost of completing hospitals, roads and schools.
The government stepped in to finish critical projects and tightened rules on outsourcing and risk transfer.
Carillion became the reference point for contractor insolvency and the question of who holds project risk.
Clough's insolvency is the same pattern. Transgrid called it unforeseeable; the AER was not persuaded.
Snowy 2.0 cost blowout (2019– )
Australia's Snowy 2.0 pumped-hydro project was approved at A$4.1 billion in 2019. Estimates have since climbed above A$12 billion, with completion pushed back to 2028-29.
The federal government, which owns Snowy Hydro, has absorbed the increases through repeated capital top-ups, shielding consumers so far.
The project shows how Australia's energy transition infrastructure has routinely blown its budgets.
Project Energy Connect is the transmission-side version of the same pattern. The AER decision tests whether the cost lands on consumer bills.
