Eraring gets third closure date in four years, now April 2029

By Elias Thorne · 2026-07-21

Three dates, four years, one station still running

Eraring Power Station was supposed to be a solved problem. Origin Energy submitted notice to the Australian Energy Market Operator on 17 February 2022 to retire the 2.88 GW Lake Macquarie facility as early as August 2025verifiedVerified Source: announcements.asx.com.au, a full seven years ahead of its original 2032 schedule.^[1] That notification set off a four-year chain of policy responses, underwriting deals and revised deadlines that has left the station's exit date less certain now than when the process began.

The sequence matters not just as a corporate timeline but as a systems-level signal. Every revision to Eraring's retirement date represents a discrete intervention point at which investors in coal generation, and in the firming capacity that should replace it, were asked to price a different set of assumptions. Three revisions in four years means three different investment environments, none of them durable.

How the NSW underwriting deal was structured

On 23 May 2024, the New South Wales Government secured an agreement with Origin Energy to operate Eraring until August 2027, backed by an underwriting arrangement covering up to A$450 million of potential losses.verifiedVerified Source: nsw.gov.au^[2] The mechanism was designed to share up to 80 per cent of operational losses, capped at A$225 million per year, with Origin required to decide annually by 31 March whether to invoke the support.

The deal reflected a specific problem: Origin had no commercial incentive to keep running a generator that could operate at a loss in low-price conditions, but the grid needed the capacity headroom while faster-than-expected retirements elsewhere tightened supply. The underwrite was an attempt to hold that gap open without transferring full ownership or obligation to the state.

Why Origin walked away from the arrangement

Origin Energy elected not to opt in to the underwriting arrangement for the 2025-26 and 2026-27 financial years, and the NSW Government has made no payments under the agreement.verifiedVerified Source: energy.nsw.gov.au^[3] Then on 20 January 2026, Origin notified AEMO that Eraring would extend operations until no later than 30 April 2029, the third revision to its closure date since the original 2022 notice.^[3]

The opt-out cuts two ways. For taxpayers, the outcome is clean: zero outlays under a deal that carried A$450 million in contingent exposure. For the market, the signal is murkier. Origin's decision not to invoke the underwrite suggests Eraring was commercially viable without it in those years, yet the station's ongoing operation still rests on a unilateral corporate decision rather than any durable regulatory framework, meaning the date can shift again.

What investors read from a third revision

Kieran Donoghue, General Manager of Policy at the Australian Energy Council, told a federal parliamentary committee that the pattern of closure and response had become structurally self-defeating. "What we have seen over the last year or two is the beginning of the closure of a number of large older generators and the lack of equivalent generation coming in to replace them. That is fundamentally down to the lack of policy clarity and that no-one knows what they should build."^[4]

Associate Professor Frank Jotzo, Director of the Energy Change Institute at the Australian National University, told a separate Senate inquiry that the investment environment had been corroded over a long period. "Australia's energy sector has been exposed to significant investment uncertainty due to pervasive policy uncertainty and climate policy reversals for over a decade," Jotzo said.^[5]

Professor Kenneth Baldwin, also of the Australian National University's Energy Change Institute, put the investment deterrent in concrete terms, telling the committee that industry partners had not invested in new generation over the previous decade because the risk of investing amid policy uncertainty was simply too great.^[4] Baldwin made that observation in 2017; the decade of drift it described has since stretched to nearly two.

Where the regulatory and investment outlook stands now

The April 2029 date gives Eraring roughly three more years of operational life from the point Origin filed its latest AEMO notification. For grid planners, that runway is useful. For investors weighing whether to commit capital to either coal assets or the firming capacity that must eventually replace them, a fourth revision remains as plausible as any other outcome, given the track record.

The NSW Department of Energy confirmed the government made no payments under the deal as of 11 March 2026, the date its agreement page was last updated.^[3] Origin's next formal obligation to AEMO under its revised notice runs to 30 April 2029.

Elias Thorne

Elias Thorne writes about interest rates, the bond market and the Reserve Bank. He is interested in what monetary policy actually does to household budgets, and in the long stretches of economic history that tend to repeat.