The UK has some mammooth projects in the pipeline as part of the Long Duration Energy Storage Cap-and-Floor scheme [1].

There's a 200MW/3,600MWh project which has planning permission and also a 400MW/7,200MWh proposal [2].

1. https://www.ofgem.gov.uk/sites/default/files/2025-03/Long%20...

2. https://www.solarpowerportal.co.uk/battery-storage/field-s-2...