The installation spans 2.5 hectares and comprises more than 4,000 PV panels.
July 21, 2026
The UK Army has commissioned a new ground-mounted solar PV installation at Larkhill Garrison in Wiltshire that is expected to generate approximately 1.7GWh of electricity annually.
The installation spans 2.5 hectares and comprises more than 4,000 PV panels. The excess electricity will be exported through a private wire network serving Bulford, Tidworth and Perham Down military camps.
Major General AJ Smith CBE, director of basing & infrastructure and the Army's sustainability champion, said, "This project shows what is possible when we invest in practical, scalable renewable energy. By growing our green energy supply we are building an Army estate that is more sustainable and resilient, and better able to support operational capability."
The project forms part of the Army's Project Prometheus programme, which is deploying rooftop and ground-mounted solar PV systems across suitable sites on the Army estate. It was delivered by Aspire Defence Services on behalf of the Defence Infrastructure Organisation (DIO).
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The Ministry of Defence is also partnered with Great British Energy to deploy solar across its sites.
The commissioning follows an expansion of solar capacity at Larkhill this year through the addition of the ground-mounted array and four rooftop PV installations.
James Clare, director of energy, environment and infrastructure at the Ministry of Defence said, "This project shows the practicable benefits of investing in scalable energy solutions. By increasing our renewable energy capacity, we are reducing costs, enhancing estate resilience, and supporting a more sustainable and operationally effective estate."
The Army said the increased PV capacity enabled the garrison to achieve energy self-sufficiency for 73 days during peak daylight hours, while surplus electricity was exported to Bulford Camp.
In 2023, the UK Army commissioned a 3,000-panel solar PV farm at Duke of Gloucester Barracks in South Cerney. The 1.1-hectare installation became the Defence estate's third operational solar site and was expected to generate around one-third of the barracks' electricity demand, contributing to estimated annual savings of £250,000 across the three operational sites.
The project was delivered by renewable energy installer 3ti. It followed the Army's first solar farm, a 2.3MW installation at the Defence School of Transport in Leconfield delivered by Centrica Business Solutions in 2021, and the Baker Barracks solar project on Thorney Island, which was completed by 3ti in February 2022.
Related:UK solar installations continue rising as costs per kW drop
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Shreeyashi Ojha
Senior Reporter, Informa
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