Wiltshire
Solar panels in Corsham, designed on a free call.
About 6,520 kWh a year from 12 panels in Corsham, £6,360 installed, with your system designed on a free 30-minute video call.
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Sunlight in Corsham, in numbers
PVGIS puts Corsham at 1,025 kWh per kWp a year, 1% below our Wiltshire county estimate. 68% of it arrives between April and September, peaking in July.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 40.1 |
| February | 53.3 |
| March | 89.6 |
| April | 115 |
| May | 125 |
| June | 123 |
| July | 126 |
| August | 111 |
| September | 95.3 |
| October | 65.7 |
| November | 45.4 |
| December | 35.7 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 1,025 kWh per kWp in Corsham against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Corsham 11% above it.
How Corsham compares
Small towns rarely get published solar figures, so here are the numbers for Corsham. It is one of 20 Wiltshire towns we track, and it ranks joint 8th of 20 for solar yield, a town of 11,252 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,025 kWh per kWp a year, 2.81 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £917 of year one benefit, £247 of it from your own generation and £670 from export at 12p.
These are starting numbers, not a quote. The calculator below opens on Corsham's own PVGIS figure; change the panels, the battery or the export rate and it reruns. The design call replaces every assumption with your roof and your bills.
Any planning application in Corsham sits with Wiltshire, and its official House of Commons Library settlement class is small town.
The charger is in the installed price but left out of payback: charging savings depend on your mileage and tariff, which the design call models properly.
Your real roof and usage, worked through on a free 30-minute video call. Use the full form or leave three details below.
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Three details. We call or text within one working day to book your free 30-minute design call, on video or by phone if you prefer.
Modelled for Corsham at 51.43011, -2.19312 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
SSEN and your Corsham connection
Corsham sits in Scottish and Southern Electricity Networks' Southern England licence area, so SSEN is the network operator (DNO) any solar panels or battery here are registered with.
G98 is the simple route. If the inverter, plus any battery, stays at or under 3.68kW per phase, SSEN only has to be told within 28 days after the system is commissioned.
Above that, G99 means applying before the work is booked. SSEN says it can take up to 45 working days to issue a quotation for a generation connection above 3.68kW per phase and up to 50kW.
Sources: NESO DNO licence areas (3 May 2024); SSEN, micro-generation connections page, checked 25 September 2026. G98 vs G99, explained.
Adding a heat pump or an EV charger in Corsham
A heat pump in Corsham
In December, the darkest month here, 12 panels in Corsham make about 230 kWh. That is when a heat pump runs hardest, so its running cost in Corsham comes down to the tariff and the flow temperature rather than the roof.
Grant support in England comes from the Boiler Upgrade Scheme: £7,500 for an air source or ground source heat pump, £2,500 for air-to-air, and an extra £1,500 until March 2027 where the home is heated by oil or LPG off the gas grid (gov.uk, checked 28 September 2026).
Charging an EV in Corsham
Corsham's July output, about 800 kWh from 12 panels, is several times the 70 kWh or so a typical home uses in daylight that month on our calculator's settings. Daytime charging turns that surplus into miles.
The calculator above includes a 7.4kW smart charger from £1,100 installed. Renters and flat owners with off-street parking can claim 75% of a chargepoint's cost, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026).
What the named kit costs, installed
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Corsham
The same sourced benchmarks apply in Corsham as everywhere we cover: honest repair pricing and what a service should include.
Common questions about solar in Corsham
How much electricity do solar panels make in Corsham?
About 6,520 kWh a year from 12 panels (6.36 kWp), on PVGIS satellite data for Corsham: 1,025 kWh per kWp, or 2.81 peak sun hours a day on average. July is the strongest month, at about 800 kWh.
Is solar more expensive in Corsham?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Corsham, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 6,520 kWh a year here, which is what drives payback.
Which DNO covers Corsham, and what does it need from me?
Scottish and Southern Electricity Networks (SSEN) covers Corsham. A home system of up to 3.68kW per phase is notified to SSEN within 28 days of commissioning under G98, and nothing waits on approval. Larger outputs need a G99 application before work starts. SSEN says it can take up to 45 working days to issue a quotation for a generation connection above 3.68kW per phase and up to 50kW.
What could I earn from exporting in Corsham?
On the 12p export scenario, a 12-panel system in Corsham sends about 5,582 kWh a year to the grid, worth around £670. The export rates table compares what each supplier pays.
How much solar does Corsham get in December?
December is the low point: about 230 kWh from a 12-panel system in Corsham, on PVGIS data, rising to 800 kWh in July. From November to February the same system makes about 1,110 kWh in total, which is why a battery charged off-peak does more of the work in winter.
How Corsham compares with its neighbours
How the towns nearest Corsham compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Corsham |
|---|---|---|
| Corsham | 1,025 | this town |
| Chippenham | 1,009 | −16 kWh |
| Melksham | 1,031 | +6 kWh |
| Bradford-on-Avon | 1,020 | −5 kWh |
| Trowbridge | 1,022 | −3 kWh |
| Calne | 1,013 | −12 kWh |
| Bath | 1,018 | −7 kWh |
PVGIS v5.2 for each town centroid, identical assumptions throughout. A few kWh either way is weather-year noise; a spread beyond about 30 kWh per kWp is real geography.
Also for Corsham: Solar panels in Corsham from OVO Solar & Battery
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Reading for Corsham homeowners
Sourced, dated and written by us. The same ground we cover on your free call.
G98 vs G99: the 28-day form and the eight-week wait, in plain English
One number on your quote decides between a formality and an eight week wait.
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Read the guide →Are heat pumps worth it? The real 2026 numbers
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Read the guide →Choosing a tariff when you have solar, a battery and an EV
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Read the guide →Get my free quote
Takes about two minutes. We call or text within one working day to book your free 30-minute video design call at a time that suits you. We design it around your roof and your numbers, and our MCS-certified, fully insured installation teams install it.