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Over 3GWh of BESS approved in UK in March

April 3, 2025
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The UK saw 1,590MW/3,179MWh of grid-scale BESS projects approved last month, bringing the total approved projects to around 55.4GW/117GWh.

That’s according to the latest data from Solar Media Market Research’s ‘Battery Storage: UK Pipeline & Completed Assets Database’ report.

The quantity of battery energy storage system (BESS) pipeline with planning consent is a roughly 5% increase on the 52.3GW/111.5GWh at the end of March, which itself was a roughly 5% increase on the 50.2GW/106.2GWh at the end of January, the data shows.

Major projects that were awarded planning consent last month include a 200MW/400MWh BESS from OnPath Energy and a 456MW project from Gresham House, both in Scotland, first reported by our colleagues at Solar Power Portal.

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The milestone of planning consent could be crucial during regulator Ofgem’s reshuffle of the grid connection queue. January and February actually saw larger figures of BESS projects being approved, around 2,455MW/5,300MWh and 2,820MW/5,639MWh respectively.

The increase in operational capacity was comparatively lower in March than previous months, inching up around 1.7% to 6,374MW/9,043MWh from last month’s figure. The commissioning of Pulse Clean Energy’s 42MW/100MWh Hyde BESS, covered on Solar Power Portal, accounted for a big chunk of that increase.

The UK is Europe’s largest grid-scale BESS market, although Germany is larger overall if you include residential and commercial & industrial (C&I), as recent data from research firm LCP Delta and trade body EASE showed.

Our Market Research colleagues meanwhile estimate that around 700MW/1,400MWh of BESS projects started construction in the UK in the past month, meaning a total of around 18GWh is under construction.

24 February 2026
InterContinental London - The O2, London, UK
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9 June 2026
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Held alongside The Battery Show Europe, Energy Storage Summit provides a focused platform to understand the policies, revenue models and deployment conditions shaping Germany’s utility-scale storage boom. With contributions from TSOs, banks, developers and optimisers, the Summit explores regulation, merchant strategies, financing, grid tariffs and project delivery in a market forecast to integrate 24GW of storage by 2037.
13 October 2026
London, UK
Now in its second edition, the Summit provides a dedicated platform for UK & Ireland’s BESS community to share practical insights on performance, degradation, safety, market design and optimisation strategies. As storage deployment accelerates towards 2030 targets, attendees gain the tools needed to enhance returns and operate resilient, efficient assets.
2 December 2026
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Battery Asset Management Summit Europe is the annual meeting for owners, operators, investors, and optimisation specialists working with operational BESS assets across the continent. The Summit focuses on how to maximise performance and revenue, manage degradation, integrate advanced optimisation software, navigate evolving market and regulatory frameworks, and plan for repowering or end-of-life strategies. With insights from Europe’s most active storage markets, it equips attendees with practical guidance to run resilient, profitable battery portfolios as the sector scales.

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