Ameresco, Inc. announced that Ameresco and Envision Energy have been chosen by Atlantic Green to build the Cellarhead project, a 300-megawatt (MW) battery energy storage project (BESS) with a maximum energy capacity of 624 megawatt hours (MWh). The Cellarhead BESS project will be connected to National Grid?s Cellarhead sub-station and will provide the UK with additional energy security and reliability. Construction is anticipated to commence on site this year with connection to the electricity grid anticipated at the end of 2026.

With a maximum energy capacity of 624 megawatt hours, the Cellarhead BESS project will support the UK?s ambition to achieve net zero, supporting the increased penetration of clean energy generation, decrease reliance on fossil fueled generation, and ultimately mitigate greenhouse gas (GHG) emissions. Ameresco and Atlantic Green expect to finish the BESS and secure grid connection by the middle of 2026. Following completion, Atlantic Green will own and operate the BESS as an energy storage asset.