De-risking Long-Duration Energy Storage Investments
The UK government's innovative cap-and-floor scheme, initially announced in October 2024, has reached a major milestone. The mechanism is designed to de-risk long-duration energy storage (LDES) investments by providing a guaranteed revenue floor and a ceiling above which excess earnings must be paid back. The first selection round has successfully identified 16 projects from a competitive shortlist of 77 applicants.
A Diverse Portfolio of Storage Technologies
The selected 16 projects represent a diverse and robust portfolio of storage technologies, reflecting the UK's commitment to a multi-technology approach for grid resilience. The lineup comprises 11 battery energy storage system (BESS) projects, 3 pumped hydro facilities, 1 compressed air energy storage (CAES) project, and notably, 1 vanadium redox flow battery project. This inclusion of flow battery technology highlights the growing recognition of its value in providing multi-day storage capabilities.
The cap-and-floor scheme provides a vital revenue floor for LDES developers, transforming long-duration storage from a high-risk venture into a bankable infrastructure asset.
Following the national selection, regional approvals are rapidly advancing. On September 7, the Scottish government's Energy Consents Unit granted planning permission to two major LDES projects developed by Field Energy. Both projects were selected for the UK cap-and-floor revenue support program. The approved developments include the 200 MW / 16.5-hour Fyrish BESS near Alness in the Scottish Highlands, and the massive 400 MW / 18.03-hour New Deer BESS in Aberdeenshire.
Together, these Scottish projects alone will deliver over 10 GWh of long-duration storage capacity. The successful implementation of the cap-and-floor scheme and the rapid planning consents signal a new era of bankable, large-scale LDES deployment across the United Kingdom.
This article was assisted by AI analysis. Please refer to the original source for official information.