Wiltshire
Solar panels in Highworth, with the numbers shown.
Twelve panels (6.36 kWp) here make about 6,470 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
Get my free quote
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.
or call 07782 219224
- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
Highworth's solar year
Highworth's best month is July, at 125.6 kWh per kWp; December manages 35.6. Over the year that comes to 1,018 kWh per kWp, 2% below our Wiltshire county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 39.9 |
| February | 52.5 |
| March | 88 |
| April | 115 |
| May | 122 |
| June | 121 |
| July | 126 |
| August | 111 |
| September | 95.5 |
| October | 65.9 |
| November | 46.1 |
| December | 35.6 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 1,018 kWh per kWp in Highworth against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Highworth 10% above it.
How Highworth compares
Small towns rarely get published solar figures, so here are the numbers for Highworth. It is one of 20 Wiltshire towns we track, and it ranks joint 14th of 20 for solar yield, a town of 7,981 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,018 kWh per kWp a year, 2.79 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £912 of year one benefit, £247 of it from your own generation and £665 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 Highworth's own yield.
Swindon is the planning authority covering Highworth, which the House of Commons Library classes 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.
Price this for your roof
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.
Generation is modelled from PVGIS satellite data for Highworth's own coordinates (51.63285, -1.71129), using the same 26.32p/kWh import value and £1,000 per kWp installed pricing as every Clearline estimate; the methodology is on our help page.
Who runs the grid in Highworth
On NESO's licence-area map, Highworth is in Southern England, which Scottish and Southern Electricity Networks (SSEN) operates. That makes SSEN the network operator for any system fitted here.
Most home systems stay within 3.68kW per phase of inverter output, which puts them on G98, a notification to SSEN within 28 days of switch-on. Panel count does not decide it; the inverter and any battery do.
A bigger inverter or battery output needs a G99 application in advance. 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 Highworth
A heat pump in Highworth
A heat pump does most of its work from November to February. Over those four months, 12 panels in Highworth make about 1,110 kWh, against 3,050 kWh from May to August, so winter heating runs mostly on grid electricity and the tariff matters more 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 Highworth
From April to September, 68% of a Highworth roof's yearly output arrives, peaking at about 800 kWh in July on 12 panels. A car parked at home in daylight can soak up what the house, at around 70 kWh of daytime use that month, cannot.
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).
The packages, priced before anyone visits
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Highworth
Faults, servicing and ageing inverters follow the same economics in Highworth as anywhere else, and the guides below price them plainly.
Solar in Highworth: your questions answered
What does a solar panel system produce in Highworth?
Each kWp of panels in Highworth makes 1,018 kWh a year on PVGIS figures, so a typical 12-panel system produces around 6,470 kWh, from about 230 kWh in December up to 800 kWh in July.
How much are solar panels in Highworth?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Highworth before a battery. What Highworth changes is the return, about 6,470 kWh a year from that system, and your design call prices your actual roof.
Would a system in Highworth need approval from the network operator?
Highworth is on Scottish and Southern Electricity Networks' network (Southern England licence area). Systems up to 3.68kW per phase of inverter output follow G98: SSEN is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. 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. Our G98 vs G99 guide explains both routes.
How much can I earn from exporting solar in Highworth?
With typical use and no battery, a 12-panel system in Highworth exports about 5,538 kWh a year. At 12p per kWh that is roughly £665; a supplier paying more, or a battery that keeps more for the evening, changes the figure. See the export rates table.
Is solar worth it in Highworth in winter?
It works, but the year is lopsided. 68% of a Highworth roof's output lands between April and September; the four months from November to February give about 1,110 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Highworth compares with its neighbours
How the towns nearest Highworth compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Highworth |
|---|---|---|
| Highworth | 1,018 | this town |
| Stratton St Margaret | 1,020 | +2 kWh |
| Faringdon | 1,030 | +12 kWh |
| Swindon | 1,018 | level |
| Wroughton | 1,019 | +1 kWh |
| Carterton | 1,028 | +10 kWh |
| Royal Wootton Bassett | 1,018 | level |
Each row is a PVGIS v5.2 run at that town's centre with the same settings. Treat gaps of a few kWh as noise and gaps over about 30 kWh per kWp as real differences in sunshine.
Also for Highworth: Solar panels in Highworth from OVO Solar & Battery
Also near Highworth
See a number before you speak to anyone
Answer a few questions about your roof and usage and see an instant solar and battery estimate. No email needed to see the result.
Reading for Highworth homeowners
Sourced, dated and written by us. The same ground we cover on your free call.
Do solar panels increase home value? What the actual data shows
The largest UK study found a 6.1% to 7.1% sale price premium. Here is the full picture.
Read the guide →Which battery size band does your home fall into?
Where UK homes actually land, why oversizing costs you, and what shifts the band.
Read the guide →Smart charge point regulations, explained
Why your charger arrives pre-set to charge overnight, and why it waits before it starts.
Read the guide →Are air source heat pumps any good? What owners actually report
The UK's largest survey found 80% of heat pump owners satisfied, against 70% for gas boilers.
Read the guide →Which tariffs are actually built for battery charging
A battery buys cheap and uses dear. The tariff decides how much that is worth.
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.