Surrey
Solar panels in Ewell, designed on a free call.
About 6,470 kWh a year from 12 panels in Ewell, £6,360 installed, with your system designed on a free 30-minute video call.
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or call 07782 219224
- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
Sunlight in Ewell, in numbers
PVGIS puts Ewell at 1,017 kWh per kWp a year, 1% below our Surrey 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 | 37.5 |
| February | 50.6 |
| March | 87.2 |
| April | 115 |
| May | 123 |
| June | 124 |
| July | 126 |
| August | 111 |
| September | 96.1 |
| October | 66.5 |
| November | 46.2 |
| December | 35.4 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
Our GB average is 925 kWh per kWp a year, the mean of the 85 county PVGIS estimates we publish; at 1,017, Ewell is 10% above it.
How Ewell compares
Among the places we publish figures for, Ewell is one of 47 Surrey towns we track, and it ranks joint 41st of 47 for solar yield. It is a medium town in the House of Commons Library classification, with 28,055 residents, and its roofs see 2.79 peak sun hours a day across the year. That drives the standard 12 panel model to 6,468 kWh of generation, of which around 5,531 kWh is exported at 12p for £664 a year, with £247 saved on electricity you would otherwise buy at 26.32p.
Treat these as calibration rather than a quote. The calculator below runs the same model, opened on Ewell's own yield, and prices a 12 panel system at £6,360 installed before any battery. Your free design call reworks every number for your actual roof, its shading and your usage.
Planning applications here go through Epsom and Ewell; nationally, the House of Commons Library classes Ewell as a medium 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.
Modelled for Ewell at 51.35249, -0.25463 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
UK Power Networks and your Ewell connection
The distribution network operator (DNO) for Ewell is UK Power Networks, which runs the South East England licence area.
G98 is the simple route. If the inverter, plus any battery, stays at or under 3.68kW per phase, UK Power Networks only has to be told within 28 days after the system is commissioned.
Above that, G99 means applying before the work is booked. Ofgem's guaranteed standard for a low voltage generation connection quotation is 45 working days, with £80 paid for each working day late, and it binds UK Power Networks as it does every network operator.
Sources: NESO DNO licence areas (3 May 2024); Ofgem, Distributed Generation Standards Direction guidance, checked 27 September 2026. G98 vs G99, explained.
Heat pumps and EV charging in Ewell
A heat pump in Ewell
Heating demand peaks when solar is weakest. In Ewell, a 12-panel system makes about 230 kWh in December and 240 kWh in January, a fraction of its 800 kWh in July, which is why a heat pump here is costed on its tariff first.
In England, the Boiler Upgrade Scheme pays £7,500 towards an air source or ground source heat pump and £2,500 towards an air-to-air one, with £1,500 more until March 2027 for homes heated by oil or LPG with no mains gas (gov.uk, checked 28 September 2026).
Charging an EV in Ewell
Ewell'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.
Renters and flat owners with private off-street parking can get 75% off a chargepoint and its installation, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above adds 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 Ewell
The same sourced benchmarks apply in Ewell as everywhere we cover: honest repair pricing and what a service should include.
Ewell solar questions
How much electricity do solar panels make in Ewell?
About 6,470 kWh a year from 12 panels (6.36 kWp), on PVGIS satellite data for Ewell: 1,017 kWh per kWp, or 2.79 peak sun hours a day on average. July is the strongest month, at about 800 kWh.
Is solar more expensive in Ewell?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Ewell, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 6,470 kWh a year here, which is what drives payback.
Which DNO covers Ewell, and what does it need from me?
UK Power Networks covers Ewell. A home system of up to 3.68kW per phase is notified to UK Power Networks within 28 days of commissioning under G98, and nothing waits on approval. Larger outputs need a G99 application before work starts. Ofgem's guaranteed standard for a low voltage generation connection quotation is 45 working days, with £80 paid for each working day late, and it binds UK Power Networks as it does every network operator.
What could I earn from exporting in Ewell?
On the 12p export scenario, a 12-panel system in Ewell sends about 5,531 kWh a year to the grid, worth around £664. The export rates table compares what each supplier pays.
How much solar does Ewell get in December?
December is the low point: about 230 kWh from a 12-panel system in Ewell, on PVGIS data, rising to 800 kWh in July. From November to February the same system makes about 1,080 kWh in total, which is why a battery charged off-peak does more of the work in winter.
How Ewell 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 Ewell |
|---|---|---|
| Ewell | 1,017 | this town |
| Worcester Park and Stoneleigh | 1,017 | level |
| Epsom | 1,018 | +1 kWh |
| Banstead | 1,016 | −1 kWh |
| Kingston upon Thames | 1,018 | +1 kWh |
| Sutton | 1,015 | −2 kWh |
| Tadworth and Epsom Downs | 1,019 | +2 kWh |
Same PVGIS v5.2 query for every town. Small differences are within year-to-year weather; more than about 30 kWh per kWp apart is geography.
Also for Ewell: Solar panels in Ewell from OVO Solar & Battery
Also near Ewell
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.
Further reading for Ewell
Sourced, dated and written by us. The same ground we cover on your free call.
How long do solar panels last? 25 to 30 years, in practice
The panels outlast the inverter by a wide margin. Plan for that, not for cleaning.
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 →The main home EV chargers, compared on what actually differs
Eight popular UK home chargers on cable, connectivity, warranty and tariff integration.
Read the guide →What are the disadvantages of a heat pump? Six honest ones
Six real disadvantages, worth planning around rather than a reason to rule one out.
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 →What MCS certification actually is, and why your export payments depend on it
The badge that decides whether your solar earns export payments. It cannot be added later.
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.