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Solar Panels in Slough: Costs, Yields and Berkshire Solar

Updated 2026-04-075 min read

Does solar work in Slough?

Slough is in Berkshire, benefiting from south-east England irradiance levels of around 1,000–1,100 kWh/m² annually. Typical panel yield is approximately 900–970 kWh per kWp per year. A 4 kWp south-facing system in Slough generates roughly 3,600–3,880 kWh per year.

Slough's flat terrain and proximity to the Thames Valley means good solar exposure for most properties. The area around Heathrow brings high air traffic, but this has no meaningful effect on solar generation. The town's significant post-war and modern development has produced a range of housing well suited to solar.

900–970

kWh per kWp per year — A 4 kWp system in Slough generates around 3,600–3,880 kWh annually — strong south-east returns

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How much does solar cost in Slough?

Installation costs in Slough broadly track the England average of around £1,591 per kWp, though the proximity to London can push labour costs slightly higher. A typical 4 kWp system costs in the range of £5,500–£7,500. Slough's position in the wider Thames Valley installer market generally ensures good installer availability.

Your electricity network: SSEN

Slough is served by SSEN — Scottish and Southern Electricity Networks (ssen.co.uk), the distribution arm that covers southern England and parts of Scotland.

G98 Fit and Inform notifications (systems up to 3.68 kW per phase) and G99 pre-approvals (larger systems) are submitted to SSEN by your installer.

Typical system for Slough homes

Slough's housing stock is a genuine mix. The older areas around the town centre have interwar and postwar semis and terraces suited to 3–4 kWp. The Langley, Cippenham, and Britwell estates — built as part of Slough's post-war expansion — have a range of semi-detached and detached properties suited to 4–5 kWp.

More recent developments on the outskirts and regenerated areas offer modern homes with simpler roof geometry that suit 5–6 kWp where south-facing aspects allow. Slough Trading Estate and the surrounding commercial developments have significant flat-roof solar potential, though this article focuses on residential.

Near Heathrow: aircraft tracks don't affect solar yield

Some Slough residents express concern about aircraft noise or shadows from flight paths affecting solar panels. In practice, aircraft pass too quickly to cause any meaningful generation reduction. Solar yield in Slough is not impacted by proximity to Heathrow.

Local grants and schemes

ECO4 — available to low-income and vulnerable households. Slough has economically diverse areas and some postcodes with above-average ECO4 eligibility. Contact Slough Borough Council or use the national ECO4 checker at gov.uk.
Warm Homes Local Grant — for properties with poor EPC ratings and lower household incomes.
0% VAT on solar — UK-wide until March 2027.

Planning in Slough

Standard GB permitted development rules apply across most of Slough. Solar panels can be installed without planning permission on most homes, subject to the 200 mm maximum projection above the roof plane.

Slough has conservation areas and listed buildings in historic parts of the borough, including areas around Upton and Stoke Poges. If your property is within a conservation area or is listed, contact Slough Borough Council's planning department before proceeding.

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