Bedfordshire
Solar panels in Kempston, priced before anyone visits.
A 12-panel roof in Kempston makes about 6,540 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Sunlight in Kempston, in numbers
Kempston's best month is July, at 124.9 kWh per kWp; December manages 37.8. Over the year that comes to 1,028 kWh per kWp, level with our Bedfordshire county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 39.9 |
| February | 54.7 |
| March | 88.5 |
| April | 113 |
| May | 123 |
| June | 122 |
| July | 125 |
| August | 112 |
| September | 96.2 |
| October | 68.1 |
| November | 47.7 |
| December | 37.8 |
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, Kempston is 11% above it.
How Kempston compares
Small towns rarely get published solar figures, so here are the numbers for Kempston. It is one of 15 Bedfordshire towns we track, and it ranks joint 3rd of 15 for solar yield, a town of 23,308 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,028 kWh per kWp a year, 2.82 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £919 of year one benefit, £247 of it from your own generation and £672 from export at 12p.
These are starting numbers, not a quote. The calculator below opens on Kempston'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 here go through Bedford; nationally, the House of Commons Library classes Kempston 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 Kempston (52.11417, -0.49575), a 26.32p/kWh import price and £1,000 per kWp installed; see the help page for the full method.
The network operator for Kempston
Kempston sits in UK Power Networks' 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.
Larger systems go through G99 instead, applied for before installation. On timing: 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 Kempston
A heat pump in Kempston
In December, the darkest month here, 12 panels in Kempston make about 240 kWh. That is when a heat pump runs hardest, so its running cost in Kempston comes down to the tariff and the flow temperature rather than the roof.
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 Kempston
Summer is where a car earns its place. In July, 12 panels in Kempston make about 790 kWh, against roughly 70 kWh a typical home uses in daylight that month on our calculator's typical-use settings, so there is surplus a smart charger can put into the car instead of exporting it.
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 Kempston
If a system in Kempston is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Kempston solar questions
How much energy would 12 solar panels make in Kempston?
Kempston averages 2.82 peak sun hours a day, which PVGIS turns into 1,028 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 6,540 kWh, 67% of it between April and September.
What does a typical solar system cost in Kempston?
Solar is priced at £1,000 per kWp installed wherever you live, so a 12-panel, 6.36 kWp system costs £6,360 in Kempston, exactly as it would anywhere else, before any battery. Location changes what the system makes, not what it costs: here that is about 6,540 kWh a year. The final figure comes from your roof on the design call.
Who is the network operator in Kempston, 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 happens to the solar I do not use in Kempston?
Around £672 a year at 12p per kWh, for the roughly 5,601 kWh a 12-panel system in Kempston exports with typical use. Rates vary by supplier and some need their own tariff; the export rates table is dated and sourced.
How does solar perform in Kempston in the winter months?
December is the weakest month in Kempston: about 240 kWh from 12 panels, against 790 kWh in July. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
How Kempston compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Kempston.
| Town | kWh per kWp a year | vs Kempston |
|---|---|---|
| Kempston | 1,028 | this town |
| Wootton | 1,024 | −4 kWh |
| Wixams | 1,026 | −2 kWh |
| Bedford | 1,028 | level |
| Cranfield | 1,019 | −9 kWh |
| Ampthill | 1,024 | −4 kWh |
| Flitwick | 1,023 | −5 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 Kempston: Solar panels in Kempston 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.
Guides worth reading before your call
Sourced, dated and written by us. The same ground we cover on your free call.
Do solar panels need direct sunlight? Not really, and here is why
No. Solar cells respond to light hitting them, not to a clear line of sight to the sun.
Read the guide →Which battery size band does your home fall into?
Where UK homes actually land, why oversizing costs you, and what shifts the band.
Read the guide →Home EV charger types and speeds, explained properly
Granny cable, 7kW wall unit or 22kW three phase. What each adds per hour, and which you need.
Read the guide →Heat pump running costs versus a gas boiler, assumptions shown
Four numbers decide it: seasonal efficiency, flow temperature, tariff and heat demand.
Read the guide →Why the best export rates always carry conditions
The top export rates are acquisition offers. Here is how to price the condition.
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.