Surrey
Solar panels in Hersham, with the numbers shown.
Twelve panels (6.36 kWp) here make about 6,520 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 Hersham can generate
PVGIS puts Hersham at 1,025 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 | 39.3 |
| February | 51.7 |
| March | 87.5 |
| April | 115 |
| May | 123 |
| June | 125 |
| July | 127 |
| August | 112 |
| September | 96.4 |
| October | 67.9 |
| November | 46.3 |
| December | 35.5 |
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: Hersham makes 1,025 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Hersham is 11% above it.
How Hersham compares
Small towns rarely get published solar figures, so here are the numbers for Hersham. It is one of 47 Surrey towns we track, and it ranks joint 17th of 47 for solar yield, a town of 13,306 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,025 kWh per kWp a year, 2.81 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £917 of year one benefit, £247 of it from your own generation and £670 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 Hersham's own yield.
Hersham sits within Elmbridge, its local planning authority, and the House of Commons Library classes it 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.
Generation is modelled from PVGIS satellite data for Hersham's own coordinates (51.36686, -0.40913), 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 Hersham network
Hersham is served by UK Power Networks: the town's centre falls inside its South East England licence area on NESO's boundary map.
Most home systems stay within 3.68kW per phase of inverter output, which puts them on G98, a notification to UK Power Networks 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. 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.
Beyond the panels: heating and car charging in Hersham
A heat pump in Hersham
Solar and a heat pump pull in opposite directions through the year: Hersham's roofs make 1,100 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 Hersham
From April to September, 68% of a Hersham 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 Hersham
Guidance is nationwide, so the benchmarks hold in Hersham: repair costs, service scope, and when the inverter is the real fault.
Solar in Hersham: your questions answered
What could a roof in Hersham generate?
PVGIS puts a roof in Hersham at 1,025 kWh per kWp a year, 2.81 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,520 kWh a year, most of it between April and September.
What would 12 solar panels cost in Hersham?
£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 Hersham differs is output: about 6,520 kWh a year from that system.
Do I need permission from the DNO for solar in Hersham?
Usually not in advance. UK Power Networks, the network operator for Hersham, 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 Hersham?
It is exported. With typical use and no battery, about 5,582 kWh of the 6,520 kWh a 12-panel system makes in Hersham goes to the grid, around £670 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 Hersham?
Yes, at a lower level. PVGIS gives Hersham 35.5 kWh per kWp in December and 39.3 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 Hersham compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Hersham.
| Town | kWh per kWp a year | vs Hersham |
|---|---|---|
| Hersham | 1,025 | this town |
| Walton-on-Thames | 1,025 | level |
| Weybridge | 1,025 | level |
| Esher | 1,024 | −1 kWh |
| Byfleet | 1,024 | −1 kWh |
| Cobham | 1,025 | level |
| West Molesey | 1,019 | −6 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 Hersham: Solar panels in Hersham from OVO Solar & Battery
Also near Hersham
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Guides worth reading before your call
Sourced, dated and written by us. The same ground we cover on your free call.
How long does a solar inverter last, and when does replacing it make sense?
The one component you should expect to replace, and the decision tree when it goes.
Read the guide →Tesla Powerwall 3 against the alternatives, and where each one wins
The strongest single box in the market, and the houses it is still wrong for.
Read the guide →Three phase and EV charging: what actually changes
Three phase buys 22kW charging. Most cars cannot use it, and load balancing usually solves the real problem.
Read the guide →Which homes suit a heat pump, and which need work first
The trial data says no property type is unsuitable. Design quality decides the outcome.
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 →Your MCS certificate: what it shows, when it arrives, and how a Smart Export Guarantee supplier uses it
The document your export payments hang on. Who issues it, what it shows, and how to get a copy.
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.