SSE has acquired the project development rights for a 120MW/240MWh grid-scale battery energy storage system (BESS) project in County Offaly from UK-based renewable energy company Low Carbon which, if approved for final delivery, could be constructed and operational by the end of decade.
The purchase marks another step forward for SSE Renewables, the renewable energy business of FTSE-listed SSE plc, as it continues to grow its battery storage development portfolio on the island of Ireland.
Under the deal SSE Renewables has acquired the consented Thornsberry BESS project from Grid Systems Services Limited, a developer of grid-scale battery storage projects in Ireland owned by Low Carbon.
Thornsberry is on a secured greenfield site in the townlands of Derrynagall and Ballydaly near Tullamore with planning consent for a grid-scale BESS. It has a grid connection offer to connect 120MW of import/export capacity to Ireland’s national grid via an adjacent existing 110kV substation.
The proposed battery system would be capable of storing up to 240MWh of energy for flexible dispatch at times of peak demand. When called upon, Thornsberry would be capable of providing back-up energy to the equivalent of over 115,000 Irish homes for up to two hours at a time*, while also delivering essential balancing services to Ireland’s energy system.
Subject to a final investment decision by SSE Renewables, the project could enter construction and be operational by the end of the decade. The project would be expected to provide a boost to the supply chain and job creation in County Offaly and the wider Midlands during delivery. It would also support the delivery of local authority essential services in Offaly through the payment of development contributions and commercial rates.
The addition of the Thornsberry project grows the company’s secured battery pipeline in Ireland to 300MW, as part of a wider 1.8GW pipeline across the Ireland and the UK.
Heather Donald, Director of Onshore Wind, Solar and Battery – UK and Ireland, SSE Renewables, said: “Acquiring the consented Thornsberry project in County Offaly is another great step forward in our plans to grow SSE Renewables’ battery storage development portfolio in Ireland. The addition of this grid-scale project can make an important contribution to the delivery of SSE’s fully funded five-year Net Zero Acceleration Programme, while also advancing the diversity of the technologies in our portfolio.
“The Midlands has a long and proud tradition of supporting Ireland’s energy security. With the development of new onshore wind, solar and battery projects such as Thornsberry, the region can continue to play a significant role in delivering homegrown energy for Irish consumers while decarbonising the country’s power system. In doing so, we can help ensure vital energy projects can deliver positive social and economic benefits to County Offaly and the wider Midlands.”
Low Carbon, who began developing the project in 2018, were one of the first movers to develop, build and operate battery storage and solar in the Irish renewables market having provided approximately 20% of the country’s operational storage capacity.
Located near Tullamore in County Offaly, the Thornsberry project is on a secured greenfield site with planning consent for an installed capacity of 120 MW and a grid connection offer to connect to the Irish national grid via an existing 110kV substation. Once built, the project could power more than 115,000 homes for up to two hours at times of peak demand, underlining the key role battery storage is playing in unlocking the path to net zero.
It follows Low Carbon’s recent announcement on a 6 GW Dutch battery storage portfolio, underscoring their market leading position of developing battery storage assets which are essential for advancing global decarbonisation efforts and grid stability as demand for electricity grows.
Founder and Chief Executive of Low Carbon, Roy Bedlow, said:
“We are delighted to collaborate with SSE on this project, which underscores Low Carbon’s leading position in the Irish storage market. Furthermore, this announcement demonstrates our expertise of delivering high-quality investable assets to the market, meanwhile playing an important role in supporting our future growth as we aim to build 20 GW of new renewable energy.
