Ameresco has entered into a $249m contract and long-term service agreement with Atlantic Green for a 300MW battery energy storage system (BESS) project in the UK.
The scheme, which will use Envision Energy’s BESS technology, is scheduled to break ground by mid-2024.
Atlantic Green selected Ameresco and Envision Energy to deliver the Cellarhead project, after competitive tender.
The Cellarhead BESS will be connected to National Grid’s Cellarhead substation and will provide the UK with additional energy security and reliability, said the developer.
Connection to the electricity grid is anticipated at the end of 2026.
With a maximum energy capacity of 624 megawatt hours, the battery will support the increased penetration of clean energy generation, added the developer.
Atlantic Green was established in 2021, as a joint venture between shareholders Nofar Energy, and Interland Group, as a UK-based platform to invest, develop and operate grid-scale standalone battery energy storage systems across the UK.
As part of the BESS project Ameresco entered into an EPC and O&M contract including battery supply, balance of plant, warranty, and availability guarantees.
The EPC full wrap price is $249m.
Envision Energy will provide the BESS and associated services, as well as the equipment warranties.
Following completion, Atlantic Green will own and operate the BESS as an energy storage asset.
Atlantic Green managing director Nick Bradford said: “We believe that a continuous development of battery energy storage is a vital step in the UK’s journey to achieving net zero carbon emissions, and we are excited to team up with Ameresco to bring this vision to life.
“Since our founding, Atlantic Green has consistently prioritised finding strategic ways to leverage our battery storage assets with the wider community and we are eager to answer the rising demand for battery storage with this new project with such a level of energy capacity, to really make the impact on the UK electricity system that is much needed.”