The proposed accommodation centre at MOD Bicester Site A would need a substantial and dependable electricity supply. The published application includes generator facilities, raising a question for people living in Piddington, Upper Arncott and nearby lanes: what would prolonged use of diesel generation mean for local air quality? A generator is not simply a piece of equipment behind a fence. Its emissions depend on its engine, load, fuel, operating hours, exhaust arrangements and pollution controls.
What the Published Documents Tell Us
Diesel combustion can produce nitrogen oxides, including nitrogen dioxide (NO₂), as well as particulate pollution. Those pollutants are relevant to health and environmental assessments, especially where homes and public spaces may be nearby. The Home Office’s published Utilities and Infrastructure Assessment discusses electrical provision, while its Air Quality Screening Technical Note is among the application documents. The key question is whether the combined effects of the generators have been assessed for realistic patterns of operation, rather than assuming short or occasional use.
Why This Matters
A ten-year facility needs a power solution that remains reliable through winter, maintenance periods and equipment failures. If the generators are a temporary measure, residents deserve to know the expected connection date and what happens if it slips. If they may operate for years, the assessment should reflect that duration and the number of engines that could run together. It should also identify nearby locations at which pollution concentrations would be checked.
What a Proper Air-Quality Assessment Would Need to Show
The first step is to distinguish the proposal from a prediction. Planning drawings may establish that generator compounds are envisaged, but that alone does not show how frequently the engines would run or what concentrations would reach any particular home. A useful assessment would identify the generators’ specifications, exhaust heights, simultaneous operating scenarios, local background pollution, prevailing weather and the locations where people could be exposed. It should look at both the proposed initial phase and the eventual fully occupied development. Without those inputs, a reassuring statement that the site is rural tells us very little. Air pollution does not stop at a fence.
For our campaign, this is about more than an environmental technicality. Piddington and Upper Arncott are existing communities, and the people accommodated inside Site A would be closer to much of the equipment. Both groups deserve the same clear information. There is also a financial dimension: cleaner generation, exhaust treatment, noise measures or a reinforced grid connection may all require extra spending. If the Government’s answer is that the engines will operate only briefly, we would like to see the funded plan that makes that possible. If not, a decade-long operating scenario deserves scrutiny now, rather than after the site is occupied.
Questions That Deserve Answers
We would like the Government to publish a clear generator operating scenario, the predicted NO₂ and particulate impacts at surrounding homes, and any proposed emissions controls or monitoring. We are not asserting that a legal air-quality limit has been breached; the issue is whether the evidence demonstrates an acceptable impact. That distinction matters for the people who would live at Site A and for established neighbouring communities.
Further Reading
Read the published Home Office application documents and the Cherwell planning register. For background guidance, see relevant guidance.
