Northamptonshire
Solar panels in Northampton, with the numbers shown.
A 12-panel roof in Northampton makes about 6,470 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Northampton's solar year
Northampton's best month is July, at 124.5 kWh per kWp; December manages 36. Over the year that comes to 1,017 kWh per kWp, level with our Northamptonshire county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 38.8 |
| February | 53.6 |
| March | 88.6 |
| April | 113 |
| May | 123 |
| June | 121 |
| July | 125 |
| August | 111 |
| September | 96.2 |
| October | 66.4 |
| November | 46.5 |
| December | 36 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 1,017 kWh per kWp in Northampton against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Northampton 10% above it.
How Northampton compares
Northampton is classed as a city in the House of Commons Library settlement data, home to 254,262 people. It is one of 16 Northamptonshire towns we track, and it ranks 14th of 16 for solar yield. Its 1,017 kWh per kWp a year works out at 2.79 peak sun hours a day, and running the standard 12 panel model here splits the return into £247 of savings from generation you use yourself and £664 of export income at 12p, with about 5,531 kWh a year going to the grid.
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 Northampton's own yield.
West Northamptonshire is the planning authority covering Northampton, which the House of Commons Library classes as a city.
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.
Generation is modelled from PVGIS satellite data for Northampton's own coordinates (52.24456, -0.88444), 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.
Who runs the grid in Northampton
Northampton is served by National Grid Electricity Distribution (NGED): the town's centre falls inside its East Midlands 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: NGED 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. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late.
Sources: NESO DNO licence areas (3 May 2024); NGED, guaranteed standards of performance table, checked 25 September 2026. G98 vs G99, explained.
Beyond the panels: heating and car charging in Northampton
A heat pump in Northampton
A heat pump does most of its work from November to February. Over those four months, 12 panels in Northampton make about 1,110 kWh, against 3,050 kWh from May to August, so winter heating runs mostly on grid electricity and the tariff matters more 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 Northampton
From April to September, 68% of a Northampton roof's yearly output arrives, peaking at about 790 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 Northampton
Faults, servicing and ageing inverters follow the same economics in Northampton as anywhere else, and the guides below price them plainly.
Solar in Northampton: your questions answered
What does a solar panel system produce in Northampton?
Each kWp of panels in Northampton makes 1,017 kWh a year on PVGIS figures, so a typical 12-panel system produces around 6,470 kWh, from about 230 kWh in December up to 790 kWh in July.
How much are solar panels in Northampton?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Northampton before a battery. What Northampton changes is the return, about 6,470 kWh a year from that system, and your design call prices your actual roof.
Would a system in Northampton need approval from the network operator?
Northampton is on National Grid Electricity Distribution's network (East Midlands licence area). Systems up to 3.68kW per phase of inverter output follow G98: NGED is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late. Our G98 vs G99 guide explains both routes.
How much can I earn from exporting solar in Northampton?
With typical use and no battery, a 12-panel system in Northampton exports about 5,531 kWh a year. At 12p per kWh that is roughly £664; 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 Northampton in winter?
It works, but the year is lopsided. 68% of a Northampton roof's output lands between April and September; the four months from November to February give about 1,110 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Northampton compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Northampton.
| Town | kWh per kWp a year | vs Northampton |
|---|---|---|
| Northampton | 1,017 | this town |
| Wellingborough | 1,022 | +5 kWh |
| Towcester | 1,022 | +5 kWh |
| Burton Latimer | 1,021 | +4 kWh |
| Daventry | 1,012 | −5 kWh |
| Rushden | 1,026 | +9 kWh |
| Kettering | 1,022 | +5 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 Northampton: Solar panels in Northampton from OVO Solar & Battery
See a number before you speak to anyone
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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.
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 →Sigenergy SigenStor review: the 5-in-1 tower examined
The 5-in-1 tower reviewed by a site that does not sell it, warranty arithmetic included.
Read the guide →How solar aware EV charging actually works
The CT clamp, the surplus tracking and the 1.4kW floor that catches people out.
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 →What the Smart Export Guarantee actually is
The scheme obliges suppliers to pay above zero, and leaves the rate to them.
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.