Clearstone Energy has been instrumental in advancing the Hartmoor project. Credit: Clearstone Energy.

Renewable infrastructure developer Field Energy has acquired the 200MW Hartmoor battery storage project from Clearstone Energy, expanding its 11GW of battery storage projects in development and construction across Europe. 

Located on the outskirts of Hartlepool, County Durham, in the northeast of England, the Field Hartmoor facility can store up to 800 megawatt hours (MWh) of electricity, sufficient to supply 500,000 homes for four hours when fully charged.

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The Hartmoor project will play a pivotal role in delivering essential services for an energy system increasingly reliant on renewable sources.

It will help balance electricity supply and demand and provide critical support for frequency, inertia and stability. This aligns with the growing need for energy solutions that can accommodate the variability of renewable energy generation.

Clearstone played a key role in advancing the Hartmoor project, securing planning consent in 2023 and working with the National Energy System Operator to expedite energy supply to the site from 2023 to 2026.

The efforts are in response to reforms aimed at accelerating grid connections for essential projects, supporting the UK government’s 2030 clean power objectives.

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The northeast of England is poised for a surge in renewable energy, with the Dogger Bank offshore wind project expected to contribute 3.6GW to the grid between 2025 and 2028.

The Field Hartmoor project will facilitate the consistent deployment of clean energy by mitigating issues such as curtailment due to grid inflexibility or network constraints.

Field currently operates three UK battery storage projects in Oldham, Gerrards Cross and Newport, with a combined capacity of 60MW/80MWh. An additional seven projects are in the pipeline, totalling 450MW/1GWh.

The sale of the Hartmoor project will enable Clearstone Energy to further develop its 2.2GW pipeline of eight large-scale battery storage projects in the UK, with the first 400MW/800MWh facility in Devon having received planning consent in April 2024.

Field Energy chief executive Amit Gudka stated: “Transmission-connected battery storage sites like Field Hartmoor can reduce constraint costs and provide stability and reactive power services at a lower cost to bill payers than any other technology.

“These services are essential for the National Energy System Operator if we want to achieve the government’s clean power 2030 target.”