Kent
Solar panels in Sevenoaks, designed on a free call.
A 12-panel roof in Sevenoaks makes about 6,630 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Sunlight in Sevenoaks, in numbers
Sevenoaks' best month is July, at 128.5 kWh per kWp; December manages 37.2. Over the year that comes to 1,043 kWh per kWp, 3% below our Kent county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 38.4 |
| February | 52.7 |
| March | 88.4 |
| April | 117 |
| May | 126 |
| June | 127 |
| July | 129 |
| August | 114 |
| September | 98.3 |
| October | 67.7 |
| November | 48.1 |
| December | 37.2 |
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: Sevenoaks makes 1,043 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Sevenoaks is 13% above it.
How Sevenoaks compares
Among the places we publish figures for, Sevenoaks is one of 44 Kent towns we track, and it ranks joint 35th of 44 for solar yield. It is a medium town in the House of Commons Library classification, with 27,117 residents, and its roofs see 2.86 peak sun hours a day across the year. That drives the standard 12 panel model to 6,633 kWh of generation, of which around 5,697 kWh is exported at 12p for £684 a year, with £247 saved on electricity you would otherwise buy at 26.32p.
These are starting numbers, not a quote. The calculator below opens on Sevenoaks' 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.
Sevenoaks is its own local planning authority area, and its House of Commons Library settlement class is 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.
The figures use PVGIS for the centre of Sevenoaks (51.27643, 0.18733), a 26.32p/kWh import price and £1,000 per kWp installed; see the help page for the full method.
UK Power Networks and your Sevenoaks connection
On NESO's licence-area map, Sevenoaks is in South East England, which UK Power Networks operates. That makes UK Power Networks the network operator for any system fitted here.
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.
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.
Adding a heat pump or an EV charger in Sevenoaks
A heat pump in Sevenoaks
Heating demand peaks when solar is weakest. In Sevenoaks, a 12-panel system makes about 240 kWh in December and 240 kWh in January, a fraction of its 820 kWh in July, which is why a heat pump here is costed on its tariff first.
The Boiler Upgrade Scheme, open in England and Wales, takes £7,500 off an air source or ground source heat pump, or £2,500 off an air-to-air unit. Homes on oil or LPG with no mains gas get £1,500 more until March 2027 (gov.uk, checked 28 September 2026).
Charging an EV in Sevenoaks
Sevenoaks' July output, about 820 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.
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).
What the named kit costs, installed
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Sevenoaks
If a system in Sevenoaks is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Common questions about solar in Sevenoaks
How much energy would 12 solar panels make in Sevenoaks?
Sevenoaks averages 2.86 peak sun hours a day, which PVGIS turns into 1,043 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 6,630 kWh, 68% of it between April and September.
Is solar more expensive in Sevenoaks?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Sevenoaks, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 6,630 kWh a year here, which is what drives payback.
Who is the network operator in Sevenoaks, and do I need a G99 application?
The operator is UK Power Networks. Most home systems use the G98 route, a notification within 28 days of switch-on for up to 3.68kW per phase, so nothing waits on the network. Above that, G99 applies and has to be granted 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. Your design call checks which route yours needs.
What could I earn from exporting in Sevenoaks?
On the 12p export scenario, a 12-panel system in Sevenoaks sends about 5,697 kWh a year to the grid, worth around £684. The export rates table compares what each supplier pays.
How does solar perform in Sevenoaks in the winter months?
December is the weakest month in Sevenoaks: about 240 kWh from 12 panels, against 820 kWh in July. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
How Sevenoaks compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Sevenoaks.
| Town | kWh per kWp a year | vs Sevenoaks |
|---|---|---|
| Sevenoaks | 1,043 | this town |
| Tonbridge | 1,051 | +8 kWh |
| Edenbridge | 1,050 | +7 kWh |
| Swanley | 1,033 | −10 kWh |
| Oxted | 1,046 | +3 kWh |
| Southborough | 1,051 | +8 kWh |
| Longfield, New Ash Green and Hartley | 1,049 | +6 kWh |
PVGIS v5.2 for each town centroid, identical assumptions throughout. A few kWh either way is weather-year noise; a spread beyond about 30 kWh per kWp is real geography.
Also for Sevenoaks: Solar panels in Sevenoaks from OVO Solar & Battery
Also near Sevenoaks
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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.
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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 →Are heat pumps worth it? The real 2026 numbers
Electricity costs 3.3x gas per kWh. A heat pump is about 3x as efficient. The numbers nearly cancel out.
Read the guide →Choosing a tariff when you have solar, a battery and an EV
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Read the guide →MCS, HIES, RECC, NAPIT, TrustMark and Flexi-Orb: which badge does what
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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.