Highlights

  • Origin describes the Darling Downs battery as a development proposal rather than a commissioned asset.
  • The proposed project is located beside an existing gas-fired power station in Queensland.
  • Origin reports that its first Eraring battery entered commercial operation in January 2026.
  • FY27 Energy Markets EBITDA guidance incorporates the ramp-up of its battery portfolio.

Origin Energy Limited supplies electricity and gas to customers and operates energy generation and energy-related businesses in Australia. Origin Energy (ASX:ORG) is developing a portfolio of battery storage projects alongside its established energy operations. At Darling Downs in Queensland, the company describes a proposed battery rather than an asset that has completed commissioning. That distinction matters when considering the status of its storage investments and its published FY27 outlook.

Darling Downs Remains a Development Proposal

Origin Energy (ASX:ORG) identifies a proposed 500MW battery with storage capacity of up to 2,000 megawatt hours beside its Darling Downs Power Station at Kogan, west of Dalby. The existing gas-fired power station has generation capacity of 630MW. The company’s project information states that it is seeking approval to construct the battery. It does not establish that commercial operation has commenced or that a firm commissioning date has been announced.

A proposal and an operational energy asset represent different development stages. The Darling Downs project would require the relevant approvals and construction before any future declaration of commercial service. Neither a final investment decision nor a confirmed operational handover should be inferred from the planning description.

Operating Batteries Provide a Separate Reference Point

At Eraring in New South Wales, Origin Energy (ASX:ORG) reports that its first battery commenced commercial operation in January 2026. The company also identifies a second stage under construction, with completion expected in early 2027. These developments are separate from the Darling Downs proposal and should not be presented as evidence that the Queensland facility is operating.

Origin’s stated storage plans also include a further proposed Eraring expansion. Keeping the stages distinct allows readers to separate existing electricity market participation, construction activity and development proposals. Battery facilities can supply or absorb electricity across different periods, but actual trading and financial contributions depend on operating status and market conditions.

FY27 Guidance and Project Context

Origin Energy (ASX:ORG) has given FY27 Energy Markets EBITDA guidance of $1,550–$1,850 million. Its FY26 results material attributes an expected contribution to the ramp-up of its battery portfolio, alongside the impact of lower wholesale electricity prices. This is divisional guidance, not a revenue or earnings forecast specifically for the Darling Downs proposal.

The company also provided FY27 total Origin capital expenditure guidance of $450–650 million, describing lower growth expenditure as its battery development program winds down. The figures relate to the broader group and should not be allocated to an individual proposed project without a specific company disclosure.

Key Insights

Origin Energy (ASX:ORG) is progressing storage activities at different stages of development. Its Darling Downs battery remains described as a proposed facility, whereas the first Eraring battery has entered commercial operation. Origin’s published FY27 guidance offers context for its overall Energy Markets business but does not verify an operational date or financial contribution for Darling Downs. A clear distinction between proposals, construction and operating assets is essential to interpreting the company’s 2026 disclosures.