SSE is pleased to confirm all its generation units that participated in the T-4 Capacity Auction in Ireland have provisionally secured contracts for the delivery year 2025/26.
In total, SSE has secured contracts for 570MW of de-rated electricity generation capacity. This includes SSE Thermal’s Great Island CCGT station in Co. Wexford (383MW) and two smaller peaker plants at Rhode in Co. Offaly (93MW) and Tawnaghmore in Co. Mayo (94MW). In addition, SSE Renewables has secured contracts for 30MW of onshore wind capacity*.
These provisional results are subject to approval by the Regulatory Authorities and are expected to be confirmed in April.
Through this latest T-4 auction, the System Operators have provisionally awarded a total of 6,684MW of capacity contracts to electricity generators and demand side response units at an auction clearing price of €46,000/MW. This auction relates to the capacity year 2025/26, which runs from 30 September 2025 to 30 September 2026.
"In securing these latest capacity contracts, we will continue to fulfil a vital role in providing security of supply across Ireland while helping to keep the lights on as renewable capacity scales up and low-carbon flexible generation develops over the coming years."
Martin Pibworth, Chief Commercial Officer
*All volumes include a de-rating factor applied in accordance with the rules set by the System Operators and approved by the Regulatory Authorities.