Two utility-scale energy storage projects for the UK grid have successfully completed testing and are now fully commissioned. They add a total of 130MWh of installed capacity for critical grid support, providing balancing and ancillary services to strengthen the UK’s energy system.

The two, at Basildon in Essex and Loudwater in Buckinghamshire, have been built by global energy storage specialist Eku Energy and global supplier of utility-scale energy storage systems NHOA Energy.

The coming on-stream of the Basildon and Loudwater Battery Energy Storage System (BESS) projects are in line with UK Government clean energy policy, including a strategy to encourage construction through the Long-Duration Electricity Storage Scheme (LDES). The UK Government’s Clean Power 2030 Action Plan, announced in April 2025, will accelerate investment in grid-scale battery storage projects.

UK energy policy sees the development of BESS installations as essential to support the growth of AI, cloud and IoT infrastructure by ensuring high capacity stable and uninterrupted energy.

Both the Basildon and Loudwater BESS projects will deliver ancillary and balancing services that will support both the local and the national grid, boosting energy security and reliability for electricity consumers in the United Kingdom.

Eku Energy CEO Daniel Burrows said, “The commissioning of Loudwater BESS and Basildon BESS creates diversity of our operating portfolio in the United Kingdom. Our growing operating portfolio creates further opportunities to support our customers by structuring innovative long-term contracts.”

“With the commissioning of these two projects, Eku Energy is continuing to drive our mission of accelerating the energy transition by delivering safe, secure and reliable battery storage assets that provide cost-effective clean energy.”