Gloucestershire
Solar panels in Cheltenham, designed on a free call.
A 12-panel roof in Cheltenham makes about 6,300 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Sunlight in Cheltenham, in numbers
From 33.4 kWh per kWp in December to 122.8 in July: a roof in Cheltenham makes 3.7 times as much in its best month as in its darkest, and 991 kWh per kWp across the year.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 36 |
| February | 51 |
| March | 86.5 |
| April | 113 |
| May | 122 |
| June | 121 |
| July | 123 |
| August | 107 |
| September | 92.2 |
| October | 62.5 |
| November | 43.6 |
| December | 33.4 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
Against Great Britain as a whole: Cheltenham makes 991 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Cheltenham is 7% above it.
How Cheltenham compares
Cheltenham is one of 24 Gloucestershire towns we track, and it ranks joint 19th of 24 for solar yield. The House of Commons Library settlement data classes it as a large town of 118,619 people. At 991 kWh per kWp a year, a typical 12 panel system here pays for itself in around 7.1 years on the 12p scenario: £890 of year one benefit against £6,360 installed, £247 of that benefit from cutting 26.32p imports with your own generation.
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 Cheltenham's own yield.
Cheltenham is its own local planning authority area, and its House of Commons Library settlement class is large 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.
The figures use PVGIS for the centre of Cheltenham (51.89628, -2.08502), a 26.32p/kWh import price and £1,000 per kWp installed; see the help page for the full method.
The network operator for Cheltenham
Cheltenham sits in National Grid Electricity Distribution's West Midlands licence area, so NGED is the network operator (DNO) any solar panels or battery here are registered with.
Below 3.68kW per phase of inverter and battery output, the G98 route applies: the installation is notified to NGED within 28 days of commissioning, with no prior approval.
Above that, G99 means applying before the work is booked. 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 Cheltenham
A heat pump in Cheltenham
Heating demand peaks when solar is weakest. In Cheltenham, a 12-panel system makes about 210 kWh in December and 230 kWh in January, a fraction of its 780 kWh in July, which is why a heat pump here is costed on its tariff first.
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 Cheltenham
Cheltenham's July output, about 780 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.
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.
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 Cheltenham
The same sourced benchmarks apply in Cheltenham as everywhere we cover: honest repair pricing and what a service should include.
Solar in Cheltenham: your questions answered
How much electricity do solar panels make in Cheltenham?
About 6,300 kWh a year from 12 panels (6.36 kWp), on PVGIS satellite data for Cheltenham: 991 kWh per kWp, or 2.72 peak sun hours a day on average. July is the strongest month, at about 780 kWh.
Is solar more expensive in Cheltenham?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Cheltenham, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 6,300 kWh a year here, which is what drives payback.
Which DNO covers Cheltenham, and what does it need from me?
National Grid Electricity Distribution (NGED) covers Cheltenham. A home system of up to 3.68kW per phase is notified to NGED within 28 days of commissioning under G98, and nothing waits on approval. Larger outputs need a G99 application before work starts. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late.
What could I earn from exporting in Cheltenham?
On the 12p export scenario, a 12-panel system in Cheltenham sends about 5,366 kWh a year to the grid, worth around £644. The export rates table compares what each supplier pays.
How much solar does Cheltenham get in December?
December is the low point: about 210 kWh from a 12-panel system in Cheltenham, on PVGIS data, rising to 780 kWh in July. From November to February the same system makes about 1,040 kWh in total, which is why a battery charged off-peak does more of the work in winter.
How Cheltenham 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 Cheltenham |
|---|---|---|
| Cheltenham | 991 | this town |
| Bishop's Cleeve | 987 | −4 kWh |
| Innsworth | 983 | −8 kWh |
| Brockworth | 990 | −1 kWh |
| Gloucester | 980 | −11 kWh |
| Tewkesbury | 994 | +3 kWh |
| Quedgeley and Hardwicke | 999 | +8 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 Cheltenham: Solar panels in Cheltenham from OVO Solar & Battery
Also near Cheltenham
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Further reading for Cheltenham
Sourced, dated and written by us. The same ground we cover on your free call.
DNO application timescales, network by network: from a G98 notification to a G99 approval
Fit and notify within 28 days, or wait ten working days to 45 for a yes. System size decides which.
Read the guide →Adding a battery to solar panels you already own
Retrofitting a battery to working solar is straightforward. The paperwork is where people trip up.
Read the guide →Charging an EV from your own solar
Every surplus kWh is 3.6 to 5 miles. Whether that beats a 7p overnight rate is arithmetic.
Read the guide →Heat pump running costs versus a gas boiler, assumptions shown
Four numbers decide it: seasonal efficiency, flow temperature, tariff and heat demand.
Read the guide →Why tariff choice moves payback more than kit choice
Identical kit, five times the export income. The tariff decision worked through with August 2026 rates.
Read the guide →HIES explained: what the badge actually protects, and when
What HIES protects: deposits up to 25 percent capped at 5,000 pounds, and your workmanship guarantee.
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.