Surrey
Solar panels in Guildford, with the numbers shown.
Twelve panels (6.36 kWp) here make about 6,540 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
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What a roof in Guildford can generate
PVGIS puts Guildford at 1,028 kWh per kWp a year, level with 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 | 39.6 |
| February | 52.8 |
| March | 88.4 |
| April | 116 |
| May | 122 |
| June | 125 |
| July | 127 |
| August | 111 |
| September | 96.8 |
| October | 66.6 |
| November | 46 |
| December | 36.7 |
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 1,028, Guildford is 11% above it.
How Guildford compares
Guildford is one of 47 Surrey towns we track, and it ranks joint 14th of 47 for solar yield. The House of Commons Library settlement data classes it as a large town of 82,118 people. At 1,028 kWh per kWp a year, a typical 12 panel system here pays for itself in around 6.9 years on the 12p scenario: £919 of year one benefit against £6,360 installed, £247 of that benefit from cutting 26.32p imports with your own generation.
These are starting numbers, not a quote. The calculator below opens on Guildford's own PVGIS figure; change the panels, the battery or the export rate and it reruns. The design call replaces every assumption with your roof and your bills.
Planning applications in Guildford go to its own council, and the House of Commons Library classes it as a 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.
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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.
Generation is modelled from PVGIS satellite data for Guildford's own coordinates (51.24588, -0.57326), 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.
Connecting solar to the Guildford network
The distribution network operator (DNO) for Guildford is UK Power Networks, which runs the South East England licence area.
For a typical home the paperwork is light: a system of up to 3.68kW per phase goes through G98, which means UK Power Networks is notified within 28 days of switch-on rather than asked beforehand.
A bigger inverter or battery output needs a G99 application in advance. 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.
Adding a heat pump or an EV charger in Guildford
A heat pump in Guildford
Solar and a heat pump pull in opposite directions through the year: Guildford's roofs make 1,110 kWh from November to February on a 12-panel system, and 3,090 kWh from May to August. The heating season leans on the grid, so off-peak rates do the heavy lifting.
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 Guildford
From April to September, 68% of a Guildford roof's yearly output arrives, peaking at about 810 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 Guildford
Guidance is nationwide, so the benchmarks hold in Guildford: repair costs, service scope, and when the inverter is the real fault.
Guildford solar questions
What could a roof in Guildford generate?
PVGIS puts a roof in Guildford at 1,028 kWh per kWp a year, 2.82 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,540 kWh a year, most of it between April and September.
What would 12 solar panels cost in Guildford?
£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 Guildford differs is output: about 6,540 kWh a year from that system.
Do I need permission from the DNO for solar in Guildford?
Usually not in advance. UK Power Networks, the network operator for Guildford, only needs a G98 notification within 28 days of commissioning for systems up to 3.68kW per phase. Bigger inverter or battery outputs need G99 approval first. 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. "See our DNO explainer.
How much would export pay on a system in Guildford?
It is exported. With typical use and no battery, about 5,601 kWh of the 6,540 kWh a 12-panel system makes in Guildford goes to the grid, around £672 a year at 12p. A battery keeps more of it for the evening; the export rates table shows what suppliers pay.
Do solar panels work in winter in Guildford?
Yes, at a lower level. PVGIS gives Guildford 36.7 kWh per kWp in December and 39.6 in January, so a 12-panel system makes about 230 kWh and 250 kWh in those months, against 810 kWh in July. Winter output mostly covers daytime use rather than exporting.
How Guildford 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 Guildford |
|---|---|---|
| Guildford | 1,028 | this town |
| Farncombe | 1,034 | +6 kWh |
| Godalming | 1,025 | −3 kWh |
| Woking | 1,019 | −9 kWh |
| Ash and Ash Vale | 1,024 | −4 kWh |
| West Byfleet, Sheerwater and New Haw | 1,026 | −2 kWh |
| West End and Chobham | 1,025 | −3 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 Guildford: Solar panels in Guildford from OVO Solar & Battery
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 Guildford
Sourced, dated and written by us. The same ground we cover on your free call.
How to clean solar panels, and whether you need to at all
Cleaning is oversold and pigeon mesh is undersold. The numbers behind both.
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 →How an air source heat pump actually works
It moves heat rather than making it. The cycle, the efficiency numbers and the trade-offs.
Read the guide →The price cap explained, and what it does to solar payback
The cap limits unit rates, not bills. That changes what solar payback means.
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.