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Australia LGC oversupply to persist to 2030: Regulator

  • Spanish Market: Electricity
  • 27/02/26

The supply of large-scale generation certificates (LGCs) is expected to exceed demand until the scheme ends in 2030, Australia's Clean Energy Regulator (CER) said today.

The higher supply reflects strong development of large-scale renewables and is expected to continue exerting downward price pressure, the CER said.

Supply and demand

The CER expects 64-66TWh LGCs to enter the market this year, higher than the 59.7TWh in 2025. Last year's volume was itself higher than the forecast of 54-57TWh. Each LGC represents 1MWh of renewable power generation.

The oversupply in 2025 was because of a higher capacity of renewables facilities accredited to issue LGCs, and stronger power generating conditions, the CER said.

Demand fell behind issuances even as voluntary "non-RET" LGC procurement reached a record 15.3TWh in 2025, driven by 100pc renewable energy commitments. Non-RET redemptions are expected to rise to 16-19TWh this year, boosted by lower LGC prices, the CER said.

RET refers to Australia's Renewable Energy Target scheme, which requires large power retailers and users to procure LGCs. These participants redeemed 35.4TWh of LGCs in 2025, including volumes used to make up for earlier shortfalls.

The annual balance of LGCs remaining rose to nearly 25TWh in mid-February 2026 after accounting for earlier carryovers, a 56pc rise on the year. The only drivers for demand growth until the end of the LGC scheme are non-RET surrenders and RET purchases to make up shortfalls, the CER said. Shortfall for 2025 totalled 1.8TWh from four liable entities.

Spot LGC prices have been on a downtrend for much of 2025, dropping from over A$30/MWh ($21.38/MWh) in January to A$6.25/MWh in December. Spot prices have fallen further to A$3.75-3.90/MWh on 27 February.

Pipeline trends

The CER expects 3.5-4.5GW of large-scale renewables capacity to be approved for LGC issuance this year, in the same range as the 4GW approved last year.

About 1.2GW of capacity was under assessment at the end of 2025, suggesting that "strong approvals" may occur in January-June 2026, the CER said.

Further ahead, the CER expects 6-16GW of renewable generation capacity to reach final investment decision (FID) by the end of 2027, despite a record low of 2.1GW progressing through the stage in 2025.

There is a "substantial" project pipeline under the Capacity Investment Scheme, the CER noted, with 12GW of potential capacity from the first four rounds yet to reach FID. The scheme, which awards long-term revenue contracts to developers, is currently in its eighth iteration.

The Capacity Investment Scheme is now the "primary" incentive for new large-scale generation projects, while lower LGC prices will unlikely affect large-scale renewable energy investment, the CER said.

"Investment decisions are increasingly being made with little consideration to LGC prices, as developers have anticipated lower LGC prices in their business cases," the regulator said, adding that the short runway to the end of the scheme further reduces the impact of LGC revenue.

Meanwhile, a 166kW solar facility in New South Wales state has become the first renewable power facility to register under the voluntary renewable energy guarantee of origin (Rego) scheme at the end of January.

The Rego scheme launched last November and will take over LGCs after 2030.

The scheme will also cover large-scale energy storage facilities, which the CER said it is developing a pipeline dataset for. More details will be published later, the regulator said.


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