Sussex
Solar panels in Lewes, with the numbers shown.
A 12-panel roof in Lewes makes about 7,490 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Lewes' solar year
PVGIS puts Lewes at 1,177 kWh per kWp a year, 3% above our Sussex 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 | 44.1 |
| February | 61.4 |
| March | 102 |
| April | 134 |
| May | 140 |
| June | 145 |
| July | 147 |
| August | 129 |
| September | 108 |
| October | 74.5 |
| November | 50.3 |
| December | 41.4 |
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 1,177, Lewes is 27% above it.
How Lewes compares
Small towns rarely get published solar figures, so here are the numbers for Lewes. It is one of 33 Sussex towns we track, and it ranks 1st of 33 for solar yield, a town of 15,781 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,177 kWh per kWp a year, 3.22 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £1,033 of year one benefit, £247 of it from your own generation and £786 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 Lewes' own yield.
Planning applications in Lewes go to its own council, 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.
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 Lewes (50.87486, 0.00433), a 26.32p/kWh import price and £1,000 per kWp installed; see the help page for the full method.
Who runs the grid in Lewes
Lewes is served by UK Power Networks: the town's centre falls inside its South East England licence area on NESO's boundary map.
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: UK Power Networks is notified within 28 days of commissioning and nothing has to be approved first.
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 Lewes
A heat pump in Lewes
A heat pump does most of its work from November to February. Over those four months, 12 panels in Lewes make about 1,250 kWh, against 3,570 kWh from May to August, so winter heating runs mostly on grid electricity and the tariff matters more than the roof.
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 Lewes
From April to September, 68% of a Lewes roof's yearly output arrives, peaking at about 930 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.
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.
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 Lewes
Faults, servicing and ageing inverters follow the same economics in Lewes as anywhere else, and the guides below price them plainly.
Solar in Lewes: your questions answered
What does a solar panel system produce in Lewes?
Each kWp of panels in Lewes makes 1,177 kWh a year on PVGIS figures, so a typical 12-panel system produces around 7,490 kWh, from about 260 kWh in December up to 930 kWh in July.
How much are solar panels in Lewes?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Lewes before a battery. What Lewes changes is the return, about 7,490 kWh a year from that system, and your design call prices your actual roof.
Would a system in Lewes need approval from the network operator?
Lewes is on UK Power Networks' network (South East England licence area). Systems up to 3.68kW per phase of inverter output follow G98: UK Power Networks is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. 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. Our G98 vs G99 guide explains both routes.
How much can I earn from exporting solar in Lewes?
With typical use and no battery, a 12-panel system in Lewes exports about 6,549 kWh a year. At 12p per kWh that is roughly £786; a supplier paying more, or a battery that keeps more for the evening, changes the figure. See the export rates table.
Is solar worth it in Lewes in winter?
It works, but the year is lopsided. 68% of a Lewes roof's output lands between April and September; the four months from November to February give about 1,250 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Lewes 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 Lewes |
|---|---|---|
| Lewes | 1,177 | this town |
| Peacehaven | 1,158 | −19 kWh |
| Newhaven | 1,162 | −15 kWh |
| Brighton and Hove | 1,159 | −18 kWh |
| Uckfield | 1,120 | −57 kWh |
| Hassocks and Hurstpierpoint | 1,134 | −43 kWh |
| Seaford | 1,166 | −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 Lewes: Solar panels in Lewes from OVO Solar & Battery
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Further reading for Lewes
Sourced, dated and written by us. The same ground we cover on your free call.
Are solar panels worth it in 2026? Here is the actual maths
Roughly £1,000 per kWp installed, offsetting electricity at 26.32p a unit. The real arithmetic.
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 →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 →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 →NAPIT, NICEIC and competent person schemes: who tells building control about your solar
Solar work is notifiable. A competent person scheme means your installation team notifies, not you.
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.