Kent
Solar panels in Southborough, designed on a free call.
A 12-panel roof in Southborough makes about 6,680 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Sunlight in Southborough, in numbers
From 38.5 kWh per kWp in December to 130.2 in July: a roof in Southborough makes 3.4 times as much in its best month as in its darkest, and 1,051 kWh per kWp across the year.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 39 |
| February | 52.9 |
| March | 88.8 |
| April | 118 |
| May | 125 |
| June | 128 |
| July | 130 |
| August | 116 |
| September | 99 |
| October | 68.5 |
| November | 48.1 |
| December | 38.5 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 1,051 kWh per kWp in Southborough against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Southborough 14% above it.
How Southborough compares
Small towns rarely get published solar figures, so here are the numbers for Southborough. It is one of 44 Kent towns we track, and it ranks joint 28th of 44 for solar yield, a town of 9,584 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,051 kWh per kWp a year, 2.88 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £937 of year one benefit, £247 of it from your own generation and £690 from export at 12p.
These are starting numbers, not a quote. The calculator below opens on Southborough'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.
Any planning application in Southborough sits with Tunbridge Wells, and its official House of Commons Library settlement class is 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.
Modelled for Southborough at 51.15891, 0.26081 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
The network operator for Southborough
Southborough sits in UK Power Networks' South East England licence area, so UK Power Networks is the network operator (DNO) any solar panels or battery here are registered with.
Below 3.68kW per phase of inverter and battery output, the G98 route applies: the installation is notified to UK Power Networks within 28 days of commissioning, with no prior approval.
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 Southborough
A heat pump in Southborough
Heating demand peaks when solar is weakest. In Southborough, a 12-panel system makes about 240 kWh in December and 250 kWh in January, a fraction of its 830 kWh in July, which is why a heat pump here is costed on its tariff first.
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 Southborough
Southborough's July output, about 830 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.
If you rent, or own a flat, and have private off-street parking, the government chargepoint grant covers 75% of the cost, capped at £500 a socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above prices a 7.4kW smart charger from £1,100 installed.
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 Southborough
If a system in Southborough is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Common questions about solar in Southborough
How much energy would 12 solar panels make in Southborough?
Southborough averages 2.88 peak sun hours a day, which PVGIS turns into 1,051 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 6,680 kWh, 68% of it between April and September.
Is solar more expensive in Southborough?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Southborough, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 6,680 kWh a year here, which is what drives payback.
Who is the network operator in Southborough, 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 Southborough?
On the 12p export scenario, a 12-panel system in Southborough sends about 5,748 kWh a year to the grid, worth around £690. The export rates table compares what each supplier pays.
How does solar perform in Southborough in the winter months?
December is the weakest month in Southborough: about 240 kWh from 12 panels, against 830 kWh in July. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
How Southborough 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 Southborough |
|---|---|---|
| Southborough | 1,051 | this town |
| Royal Tunbridge Wells | 1,054 | +3 kWh |
| Rusthall and Langton Green | 1,051 | level |
| Tonbridge | 1,051 | level |
| Paddock Wood | 1,071 | +20 kWh |
| Crowborough | 1,054 | +3 kWh |
| Sevenoaks | 1,043 | −8 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 Southborough: Solar panels in Southborough 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 Southborough
Sourced, dated and written by us. The same ground we cover on your free call.
Solar panel types, and the four numbers that actually matter
TOPCon, HJT and back contact decoded, plus the four numbers worth comparing.
Read the guide →How much a battery saves by charging on cheap night rates
What charging at 8.5p and using at 26.32p is actually worth over a year.
Read the guide →What an EV charger installation actually involves
Main fuse, DNO notification, load balancing and the paperwork. What really happens.
Read the guide →What MCS certification actually buys you on a heat pump job
The gate on the £7,500 grant, the design standard behind your running costs, and the noise sign-off.
Read the guide →Choosing a tariff when you have solar, a battery and an EV
Solar, battery and EV want different tariffs. How to work out which one to protect.
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.