Northamptonshire
Solar panels in Daventry, priced before anyone visits.
About 6,440 kWh a year from 12 panels in Daventry, £6,360 installed, with your system designed on a free 30-minute video call.
Get my free quote
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.
or call 07782 219224
- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
Sunlight in Daventry, in numbers
Daventry's best month is July, at 124 kWh per kWp; December manages 35.3. Over the year that comes to 1,012 kWh per kWp, 1% below our Northamptonshire county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 38 |
| February | 52.3 |
| March | 89 |
| April | 113 |
| May | 122 |
| June | 122 |
| July | 124 |
| August | 111 |
| September | 95.3 |
| October | 66.3 |
| November | 45.5 |
| December | 35.3 |
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: Daventry makes 1,012 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Daventry is 9% above it.
How Daventry compares
Among the places we publish figures for, Daventry is one of 16 Northamptonshire towns we track, and it ranks 16th of 16 for solar yield. It is a medium town in the House of Commons Library classification, with 28,179 residents, and its roofs see 2.77 peak sun hours a day across the year. That drives the standard 12 panel model to 6,436 kWh of generation, of which around 5,500 kWh is exported at 12p for £660 a year, with £247 saved on electricity you would otherwise buy at 26.32p.
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 Daventry's own yield.
Any planning application in Daventry sits with West Northamptonshire, and its official 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.
Modelled for Daventry at 52.26342, -1.16821 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
NGED and your Daventry connection
Daventry 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.
Larger systems go through G99 instead, applied for before installation. On timing: 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 Daventry
A heat pump in Daventry
In December, the darkest month here, 12 panels in Daventry make about 220 kWh. That is when a heat pump runs hardest, so its running cost in Daventry 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 Daventry
Summer is where a car earns its place. In July, 12 panels in Daventry 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.
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.
Installed prices, the same in every town
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Daventry
The same sourced benchmarks apply in Daventry as everywhere we cover: honest repair pricing and what a service should include.
Common questions about solar in Daventry
How much electricity do solar panels make in Daventry?
About 6,440 kWh a year from 12 panels (6.36 kWp), on PVGIS satellite data for Daventry: 1,012 kWh per kWp, or 2.77 peak sun hours a day on average. July is the strongest month, at about 790 kWh.
What does a typical solar system cost in Daventry?
Solar is priced at £1,000 per kWp installed wherever you live, so a 12-panel, 6.36 kWp system costs £6,360 in Daventry, exactly as it would anywhere else, before any battery. Location changes what the system makes, not what it costs: here that is about 6,440 kWh a year. The final figure comes from your roof on the design call.
Which DNO covers Daventry, and what does it need from me?
National Grid Electricity Distribution (NGED) covers Daventry. A home system of up to 3.68kW per phase is notified to NGED within 28 days of commissioning under G98, and nothing waits on approval. Larger outputs need a G99 application before work starts. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late.
What happens to the solar I do not use in Daventry?
Around £660 a year at 12p per kWh, for the roughly 5,500 kWh a 12-panel system in Daventry exports with typical use. Rates vary by supplier and some need their own tariff; the export rates table is dated and sourced.
How much solar does Daventry get in December?
December is the low point: about 220 kWh from a 12-panel system in Daventry, on PVGIS data, rising to 790 kWh in July. From November to February the same system makes about 1,090 kWh in total, which is why a battery charged off-peak does more of the work in winter.
How Daventry compares with its neighbours
How the towns nearest Daventry compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Daventry |
|---|---|---|
| Daventry | 1,012 | this town |
| Rugby | 1,000 | −12 kWh |
| Southam | 1,005 | −7 kWh |
| Northampton | 1,017 | +5 kWh |
| Towcester | 1,022 | +10 kWh |
| Lutterworth | 991 | −21 kWh |
| Whitnash | 999 | −13 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 Daventry: Solar panels in Daventry from OVO Solar & Battery
Also near Daventry
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.
Reading for Daventry homeowners
Sourced, dated and written by us. The same ground we cover on your free call.
0% VAT on solar and batteries: what qualifies, and what does not
Zero VAT until 31 March 2027, then 5% returns. What qualifies, and what it is worth.
Read the guide →Tesla Powerwall 3 against the alternatives, and where each one wins
The strongest single box in the market, and the houses it is still wrong for.
Read the guide →Smart charge point regulations, explained
Why your charger arrives pre-set to charge overnight, and why it waits before it starts.
Read the guide →How much does a heat pump cost? The 2026 numbers, before and after the grant
UK median installed cost around £12,908, before the up to £7,500 grant comes off.
Read the guide →EV tariffs compared: the cheapest overnight windows
Overnight rates of 6.99p to 9p against a 26.32p capped average, compared.
Read the guide →HIES explained: what the badge actually protects, and when
What HIES protects: deposits up to 25 percent capped at 5,000 pounds, and your workmanship guarantee.
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.