Battery energy storage systems (BESS) were awarded 655. 16MW in the UK's T-1 Capacity Market Auction for delivery year 2024/25, which cleared yesterday (20 February) after eight rounds at £35.
Energy storage facility, UK. Image by Harmony Energy. Battery energy storage projects totalling 627.4 MW have secured contracts in the UK's 2023-24 Capacity Market auction, representing an increase of more than 60% compared to the previous round, the National Grid Electricity System Operator (NGESO) announced last week.
According to provisional auction results released by NGESO, almost half of the winning battery projects propose one-hour duration systems, while about 40% are for two-hour facilities. The list of winning schemes includes Zenobe, Gresham House, Harmony Energy, Pivot Power and SUSI Storage, among others.
Gore Street's Lower Road battery energy storage system (BESS). Image: Gore Street. The UK's T-4 Capacity Market auction has cleared in its third round at a record high of £63 (US$75.9)/kW/year, more than double the previous record high price.
The auction, for delivery year 2024/2025, resulted in assets clearing after eight auction rounds at £35.79 (US$45.39)/kW/year, with 7.6GW procured. Capacity Market auction cleared at a higher price than expected, and battery developers were the auction's “big winners".
What is statera energy doing to support the low-carbon transition?
With £700 million invested to date and up to £7 billion planned by 2030, it is strengthening UK energy security and supporting the low-carbon transition. Statera Energy has acquired a Greater Manchester-based 680MW/1360MWh battery energy storage system (BESS) site from Carlton Power.
How many MW of pre-qualified capacity won the 2026/27 auction?
Of the ~46MW of pre-qualified capacity eligible for the 2026/27 auction, 46,031.692MW won contracts, representing 93.42%. Significantly, the number of battery storage assets continued to grow.