Revera Starts Building the 200 MW Windyhill Battery Near Glasgow
Revera Energy has started construction of the 200 MW / 400 MWh Windyhill battery storage system in Bearsden, near Glasgow. It is the first of three Scottish projects the Carlyle-backed developer plans to build.
What has been announced
Windyhill is a two-hour battery: 200 MW of power and 400 MWh of storage. ESS News reported the groundbreaking on 7 August, while Solar Power Portal dated it to 10 August, so we cannot say which day the first work began. Both agree that construction is now under way.
Revera is a London-headquartered developer set up in 2025 by the investment firm Carlyle. GE Vernova is its technology partner. Mitie is the engineering and construction contractor, including the 132 kV grid connection, and Danske Commodities will trade the output under a ten-year revenue floor, according to ESS News. Commercial operation is targeted for the first quarter of 2028.
Part of a larger Scottish pipeline
Windyhill is the first of three Scottish sites. The other two, Hunterston and Kincardine, are each 400 MW / 800 MWh. Together the portfolio comes to almost 2 GWh and more than £500 million of investment, per ESS News. Revera's UK head said he expects about 1 GW of storage to be under construction across Scotland by the end of the year, which is a stated ambition, not a contracted fact.
The pace is notable next to other recent UK deals, such as the 300 MW Didcot site bought by Eku Energy, which connects straight to the transmission grid.
Good to know
Capacity figures in announcements are project targets. A 400 MWh battery is a store, not a power station: it can only deliver its full output for about two hours.
What it means for households
Grid batteries of this size do not change what a home battery costs or earns. Their relevance is indirect: they soak up surplus wind and solar, and they help balance the system when demand peaks. That can reduce the pressure on wholesale prices at the margin, but we could not find any published estimate of what a project like Windyhill does to household bills, so we do not claim one.
If you are weighing a battery for your own home, the size of your usage and your tariff matter far more than projects like this. Our home battery calculator is a better starting point.
Sources
- ESS News: Revera Energy breaks ground on first asset in 2 GWh Scottish BESS portfolio
- Solar Power Portal: Mitie and Revera break ground on 200MW/400MWh Scotland BESS
- TaiyangNews: Global Battery Storage News Snippets, 10 August 2026
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