Wiltshire
Solar panels in Westbury, priced before anyone visits.
About 6,540 kWh a year from 12 panels in Westbury, £6,360 installed, with your system designed on a free 30-minute video call.
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Sunlight in Westbury, in numbers
Westbury's best month is July, at 125.3 kWh per kWp; December manages 35.5. Over the year that comes to 1,029 kWh per kWp, 1% below our Wiltshire county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 39.7 |
| February | 54 |
| March | 90.4 |
| April | 117 |
| May | 125 |
| June | 122 |
| July | 125 |
| August | 112 |
| September | 96.4 |
| October | 65.7 |
| November | 45.9 |
| December | 35.5 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 1,029 kWh per kWp in Westbury against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Westbury 11% above it.
How Westbury compares
Small towns rarely get published solar figures, so here are the numbers for Westbury. It is one of 20 Wiltshire towns we track, and it ranks 7th of 20 for solar yield, a town of 17,638 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,029 kWh per kWp a year, 2.82 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £920 of year one benefit, £247 of it from your own generation and £673 from export at 12p.
Every figure here assumes a clear, south-facing roof at 35 degrees. Yours will differ, which is what the free design call is for; until then, the calculator below tests panels, batteries and export rates on Westbury's own yield.
Planning applications here go through Wiltshire; nationally, the House of Commons Library classes Westbury as a 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.
The figures use PVGIS for the centre of Westbury (51.26358, -2.19266), a 26.32p/kWh import price and £1,000 per kWp installed; see the help page for the full method.
SSEN and your Westbury connection
The distribution network operator (DNO) for Westbury is Scottish and Southern Electricity Networks (SSEN), which runs the Southern England licence area.
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.
Larger systems go through G99 instead, applied for before installation. On timing: 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.
Beyond the panels: heating and car charging in Westbury
A heat pump in Westbury
In December, the darkest month here, 12 panels in Westbury make about 230 kWh. That is when a heat pump runs hardest, so its running cost in Westbury comes down to the tariff and the flow temperature rather than the roof.
The Boiler Upgrade Scheme, open in England and Wales, takes £7,500 off an air source or ground source heat pump, or £2,500 off an air-to-air unit. Homes on oil or LPG with no mains gas get £1,500 more until March 2027 (gov.uk, checked 28 September 2026).
Charging an EV in Westbury
Summer is where a car earns its place. In July, 12 panels in Westbury make about 800 kWh, against roughly 70 kWh a typical home uses in daylight that month on our calculator's typical-use settings, so there is surplus a smart charger can put into the car instead of exporting it.
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).
Installed prices, the same in every town
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Westbury
The same sourced benchmarks apply in Westbury as everywhere we cover: honest repair pricing and what a service should include.
Common questions about solar in Westbury
How much electricity do solar panels make in Westbury?
About 6,540 kWh a year from 12 panels (6.36 kWp), on PVGIS satellite data for Westbury: 1,029 kWh per kWp, or 2.82 peak sun hours a day on average. July is the strongest month, at about 800 kWh.
What does a typical solar system cost in Westbury?
Solar is priced at £1,000 per kWp installed wherever you live, so a 12-panel, 6.36 kWp system costs £6,360 in Westbury, exactly as it would anywhere else, before any battery. Location changes what the system makes, not what it costs: here that is about 6,540 kWh a year. The final figure comes from your roof on the design call.
Which DNO covers Westbury, and what does it need from me?
Scottish and Southern Electricity Networks (SSEN) covers Westbury. 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 happens to the solar I do not use in Westbury?
Around £673 a year at 12p per kWh, for the roughly 5,608 kWh a 12-panel system in Westbury exports with typical use. Rates vary by supplier and some need their own tariff; the export rates table is dated and sourced.
How much solar does Westbury get in December?
December is the low point: about 230 kWh from a 12-panel system in Westbury, 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 Westbury compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Westbury.
| Town | kWh per kWp a year | vs Westbury |
|---|---|---|
| Westbury | 1,029 | this town |
| Trowbridge | 1,022 | −7 kWh |
| Warminster | 1,031 | +2 kWh |
| Frome | 1,008 | −21 kWh |
| Bradford-on-Avon | 1,020 | −9 kWh |
| Melksham | 1,031 | +2 kWh |
| Devizes | 1,025 | −4 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 Westbury: Solar panels in Westbury from OVO Solar & Battery
Also near Westbury
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Guides worth reading before your call
Sourced, dated and written by us. The same ground we cover on your free call.
How many solar panels do I need? The honest way to count
One panel is 2.26 square metres. The rest is measuring your roof honestly.
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Read the guide →MCS, HIES, RECC, NAPIT, TrustMark and Flexi-Orb: which badge does what
Six logos, six different jobs. What each scheme covers, and which are actually required.
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.