MOD Lyneham in Wiltshire has taken delivery of new technical training facilities and modern accommodation, handed over by the Defence Infrastructure Organisation and delivered by Kier Construction Western & Wales with Mott MacDonald as Technical Service Provider. The £82m project brings three new Single Living Accommodation blocks with 96 bedspaces for trainees and a further 72 for permanent staff and visiting RAF personnel, plus a purpose-built teaching building with classrooms, labs and workshops. It prepares the site for the relocation of RAF No. 4 School of Technical Training (4SoTT) from MOD St Athan as part of Project CUBIT, with training due to begin in 2026. (gov.uk)

Power for the new buildings will be backed by a 2.5MVA solar farm paired with battery storage. For a defence campus, on‑site generation and storage means fewer interruptions to learning, protection from price spikes, and a steady base of low‑carbon electricity for day and night operations. (gov.uk)

What does 2.5MVA look like in practice? Using DESNZ solar PV load‑factor data for England (typically around 10–12%), a 2.5MW array should generate roughly 2.2–2.6GWh each year, depending on final design and controls. That output is enough to cover a significant share of daytime demand across the training spaces, with the battery smoothing peaks and carrying excess power into evenings. (gov.uk)

On emissions, the gains are material. Applying the government’s 2024 fuel‑mix emissions intensity for UK generation (about 154gCO2e/kWh), annual output of 2.2–2.6GWh would avoid roughly 340–400 tonnes of CO2e each year. Organisations reporting under the UK greenhouse gas conversion factors (which include additional upstream effects) would record a higher saving, typically in the 450–540 tonne range for the same output. (gov.uk)

For people on the ground, the benefits are immediate: new rooms for 168 personnel provide quieter, more efficient spaces to live and study; the technical building offers up‑to‑date labs and workshops; and the battery helps keep lessons running if the grid wobbles. Construction supported 19 new jobs and included improvements to Lyneham’s community centre for military families and neighbours. (gov.uk)

This project fits a wider Defence commitment to cut emissions while improving readiness. The Ministry of Defence’s Climate Change and Sustainability Strategic Approach sets a 2026–2035 programme to reduce estate emissions using proven technologies and to build greater resilience into bases and supply chains-exactly the role that solar‑plus‑storage can play at training sites. (gov.uk)

There’s a clear lesson here for other public campuses-colleges, hospitals, emergency services. Co‑locating solar with storage can trim bills, stabilise operations and deliver verifiable carbon savings. When reporting those savings, use the DESNZ greenhouse gas conversion factors so decision‑makers can compare results consistently year to year. (gov.uk)

Fit‑out of the training facility is now under way, with 4SoTT teaching scheduled to start in 2026. By generating much of its own power and keeping classrooms live during brief grid interruptions, MOD Lyneham shifts from buying all its electricity to producing a dependable share of it-quietly cutting emissions while preparing the RAF’s next generation of ground engineers.