Photo: Freepik
The Greek Regulatory Authority for Energy, Waste and Water (RAAEY) issued a public call for the country’s third auction for subsidies for standalone battery storage projects.
The quota for battery units is 200 MW in total operating power and an energy storage duration of four hours, providing a total of 800 MWh to the system, the document reads.
The facilities will be installed in the Western Macedonia region in northern Greece and in the municipalities of Megalopolis, Tripoli, Gortynia and Oichalia in the Peloponnese region. They are the country’s lignite regions, covered by the Just Transition Development Plan.
The awarded capacity in the Peloponnese will not exceed 50 MW in total. Otherwise, individual projects in the auction can reach up to 100 MW or 50 MW in case of multiple projects by a single participant.
Interested parties (individuals or companies) can submit their applications by December 23. The evaluation lasts until February 12 and the results are scheduled to be announced on February 13.
RAAEY has set the public grant at EUR 200,000 per MW for auction winners, while the offer price ceiling is EUR 145,000 per MW per year.
A letter of guarantee of EUR 35,000 per MW must be submitted for inclusion in the auction.
Selected projects must become operational by the end of April 2026. The beneficiaries will be obligated to submit connection requests to the grid operator by January 31, 2026, the call reads.
Greece has concluded battery auctions in 2023 and earlier this year, for 400 MW and 300 MW, respectively, bringing the combined capability including the current call to 900 MW.
However, potential participants must note that total capacity per winner is limited to 225 MW for all three auctions combined.
Furthermore, at least four independent players must take part in the process, otherwise the auction will be postponed.
The government has said it would not support battery systems through subsidies anymore, as it considers them a mature and cost-effective technology.
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