Norfolk
Solar panels in Dereham, with the numbers shown.
Twelve panels (6.36 kWp) here make about 6,540 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
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Dereham's solar year
Dereham's best month is May, at 124.7 kWh per kWp; December manages 35.4. Over the year that comes to 1,028 kWh per kWp, level with our Norfolk county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 38 |
| February | 52.9 |
| March | 89.9 |
| April | 118 |
| May | 125 |
| June | 122 |
| July | 125 |
| August | 113 |
| September | 96.2 |
| October | 67.3 |
| November | 45.6 |
| December | 35.4 |
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, Dereham is 11% above it.
How Dereham compares
Small towns rarely get published solar figures, so here are the numbers for Dereham. It is one of 16 Norfolk towns we track, and it ranks 10th of 16 for solar yield, a town of 21,393 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 Dereham'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.
Breckland is the planning authority covering Dereham, which the House of Commons Library classes 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.
Generation is modelled from PVGIS satellite data for Dereham's own coordinates (52.67588, 0.94393), 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 Dereham
UK Power Networks owns and runs the local electricity network in Dereham, as part of its East England licence area.
For a typical home the paperwork is light: a system of up to 3.68kW per phase goes through G98, which means UK Power Networks is notified within 28 days of switch-on rather than asked beforehand.
A bigger inverter or battery output needs a G99 application in advance. 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 Dereham
A heat pump in Dereham
A heat pump does most of its work from November to February. Over those four months, 12 panels in Dereham make about 1,090 kWh, against 3,080 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 Dereham
From April to September, 68% of a Dereham roof's yearly output arrives, peaking at about 790 kWh in May 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).
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 Dereham
Faults, servicing and ageing inverters follow the same economics in Dereham as anywhere else, and the guides below price them plainly.
Common questions about solar in Dereham
What does a solar panel system produce in Dereham?
Each kWp of panels in Dereham makes 1,028 kWh a year on PVGIS figures, so a typical 12-panel system produces around 6,540 kWh, from about 230 kWh in December up to 790 kWh in May.
How much are solar panels in Dereham?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Dereham before a battery. What Dereham changes is the return, about 6,540 kWh a year from that system, and your design call prices your actual roof.
Would a system in Dereham need approval from the network operator?
Dereham is on UK Power Networks' network (East England licence area). Systems up to 3.68kW per phase of inverter output follow G98: UK Power Networks is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. 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. Our G98 vs G99 guide explains both routes.
How much can I earn from exporting solar in Dereham?
With typical use and no battery, a 12-panel system in Dereham exports about 5,601 kWh a year. At 12p per kWh that is roughly £672; 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 Dereham in winter?
It works, but the year is lopsided. 68% of a Dereham roof's output lands between April and September; the four months from November to February give about 1,090 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Dereham compares with its neighbours
How the towns nearest Dereham compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Dereham |
|---|---|---|
| Dereham | 1,028 | this town |
| Watton | 1,017 | −11 kWh |
| Wymondham | 1,036 | +8 kWh |
| Swaffham | 1,016 | −12 kWh |
| Hethersett | 1,034 | +6 kWh |
| Taverham and Drayton | 1,026 | −2 kWh |
| Fakenham | 1,036 | +8 kWh |
Each row is a PVGIS v5.2 run at that town's centre with the same settings. Treat gaps of a few kWh as noise and gaps over about 30 kWh per kWp as real differences in sunshine.
Also for Dereham: Solar panels in Dereham 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.
Reading for Dereham homeowners
Sourced, dated and written by us. The same ground we cover on your free call.
How long does a solar inverter last, and when does replacing it make sense?
The one component you should expect to replace, and the decision tree when it goes.
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 →How time of use charging windows actually work
How a cheap overnight window is metered and billed, and what a battery does inside it.
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 →The price cap explained, and what it does to solar payback
The cap limits unit rates, not bills. That changes what solar payback means.
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.