Gloucestershire
Solar panels in Innsworth, with the numbers shown.
A 12-panel roof in Innsworth makes about 6,250 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Innsworth's solar year
From 32.3 kWh per kWp in December to 122.7 in July: a roof in Innsworth makes 3.8 times as much in its best month as in its darkest, and 983 kWh per kWp across the year.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 35.4 |
| February | 50.3 |
| March | 84.9 |
| April | 113 |
| May | 121 |
| June | 120 |
| July | 123 |
| August | 107 |
| September | 91.6 |
| October | 61.8 |
| November | 42.2 |
| December | 32.3 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 983 kWh per kWp in Innsworth against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Innsworth 6% above it.
How Innsworth compares
Small towns rarely get published solar figures, so here are the numbers for Innsworth. It is one of 24 Gloucestershire towns we track, and it ranks 23rd of 24 for solar yield, a town of 11,135 people in the House of Commons Library settlement data. PVGIS gives its roofs 983 kWh per kWp a year, 2.69 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £885 of year one benefit, £247 of it from your own generation and £638 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 Innsworth's own yield.
Tewkesbury is the planning authority covering Innsworth, 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.
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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 Innsworth at 51.88873, -2.1949 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
Who runs the grid in Innsworth
National Grid Electricity Distribution (NGED) owns and runs the local electricity network in Innsworth, as part of its West Midlands licence area.
What decides the paperwork is the inverter and battery output, not the number of panels. Up to 3.68kW per phase, a system follows G98: NGED is notified within 28 days of commissioning and nothing has to be approved first.
Anything bigger is a G99 case and is applied for first. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late.
Sources: NESO DNO licence areas (3 May 2024); NGED, guaranteed standards of performance table, checked 25 September 2026. G98 vs G99, explained.
Beyond the panels: heating and car charging in Innsworth
A heat pump in Innsworth
A heat pump does most of its work from November to February. Over those four months, 12 panels in Innsworth make about 1,020 kWh, against 3,000 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 Innsworth
From April to September, 69% of a Innsworth roof's yearly output arrives, peaking at about 780 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.
If you rent, or own a flat, and have private off-street parking, the government chargepoint grant covers 75% of the cost, capped at £500 a socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above prices a 7.4kW smart charger from £1,100 installed.
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 Innsworth
Faults, servicing and ageing inverters follow the same economics in Innsworth as anywhere else, and the guides below price them plainly.
Common questions about solar in Innsworth
What does a solar panel system produce in Innsworth?
Each kWp of panels in Innsworth makes 983 kWh a year on PVGIS figures, so a typical 12-panel system produces around 6,250 kWh, from about 210 kWh in December up to 780 kWh in July.
What would 12 solar panels cost in Innsworth?
£6,360 for 12 panels (6.36 kWp), the same as in every other place we cover, because solar is priced at £1,000 per kWp installed rather than by area. A battery adds its own installed price on top. Where Innsworth differs is output: about 6,250 kWh a year from that system.
Would a system in Innsworth need approval from the network operator?
Innsworth is on National Grid Electricity Distribution's network (West Midlands licence area). Systems up to 3.68kW per phase of inverter output follow G98: NGED is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late. Our G98 vs G99 guide explains both routes.
How much would export pay on a system in Innsworth?
It is exported. With typical use and no battery, about 5,315 kWh of the 6,250 kWh a 12-panel system makes in Innsworth goes to the grid, around £638 a year at 12p. A battery keeps more of it for the evening; the export rates table shows what suppliers pay.
Is solar worth it in Innsworth in winter?
It works, but the year is lopsided. 69% of a Innsworth roof's output lands between April and September; the four months from November to February give about 1,020 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Innsworth compares with its neighbours
Same satellite dataset, same assumptions, so the differences are real geography rather than modelling noise.
| Town | kWh per kWp a year | vs Innsworth |
|---|---|---|
| Innsworth | 983 | this town |
| Gloucester | 980 | −3 kWh |
| Brockworth | 990 | +7 kWh |
| Cheltenham | 991 | +8 kWh |
| Quedgeley and Hardwicke | 999 | +16 kWh |
| Bishop's Cleeve | 987 | +4 kWh |
| Tewkesbury | 994 | +11 kWh |
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 Innsworth: Solar panels in Innsworth from OVO Solar & Battery
Also near Innsworth
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Further reading for Innsworth
Sourced, dated and written by us. The same ground we cover on your free call.
Solar panel grants and funding in 2026: what actually exists, and what is a sales pitch
No blanket grant exists, and the four supports that do exist are better than most of the adverts.
Read the guide →Inside a home battery: capacity, power and losses
Usable capacity, kW output, round trip losses and chemistry, in plain terms.
Read the guide →How solar aware EV charging actually works
The CT clamp, the surplus tracking and the 1.4kW floor that catches people out.
Read the guide →Are heat pumps noisy? The 37 dB(A) answer, in plain terms
The 1 metre boundary rule is gone. A 37 dB(A) sound test replaced it.
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 →How to check an MCS certificate is genuine, before the deposit leaves your account
A logo proves nothing. Certification is business specific, technology specific and checkable.
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.