Essex
Solar panels in Colchester, sized to your roof.
A 12-panel roof in Colchester makes about 6,880 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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What a roof in Colchester can generate
PVGIS puts Colchester at 1,082 kWh per kWp a year, 2% above our Essex county estimate. 68% of it arrives between April and September, peaking in July.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 40.6 |
| February | 55.9 |
| March | 91.9 |
| April | 123 |
| May | 130 |
| June | 130 |
| July | 131 |
| August | 117 |
| September | 102 |
| October | 71.1 |
| November | 50.6 |
| December | 39.1 |
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: Colchester makes 1,082 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Colchester is 17% above it.
How Colchester compares
Colchester is one of 46 Essex towns we track, and it ranks 10th of 46 for solar yield. The House of Commons Library settlement data classes it as a large town of 136,880 people. At 1,082 kWh per kWp a year, a typical 12 panel system here pays for itself in around 6.6 years on the 12p scenario: £960 of year one benefit against £6,360 installed, £247 of that benefit from cutting 26.32p imports with your own generation.
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 Colchester's own yield.
Planning applications in Colchester go to its own council, and the House of Commons Library classes it as a large 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.
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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 Colchester's own coordinates (51.89082, 0.89665), 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.
Connecting solar to the Colchester network
On NESO's licence-area map, Colchester is in East England, which UK Power Networks operates. That makes UK Power Networks the network operator for any system fitted here.
Most home systems stay within 3.68kW per phase of inverter output, which puts them on G98, a notification to UK Power Networks within 28 days of switch-on. Panel count does not decide it; the inverter and any battery do.
Anything bigger is a G99 case and is applied for 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.
Sources: NESO DNO licence areas (3 May 2024); Ofgem, Distributed Generation Standards Direction guidance, checked 27 September 2026. G98 vs G99, explained.
Beyond the panels: heating and car charging in Colchester
A heat pump in Colchester
Solar and a heat pump pull in opposite directions through the year: Colchester's roofs make 1,180 kWh from November to February on a 12-panel system, and 3,230 kWh from May to August. The heating season leans on the grid, so off-peak rates do the heavy lifting.
In England, the Boiler Upgrade Scheme pays £7,500 towards an air source or ground source heat pump and £2,500 towards an air-to-air one, with £1,500 more until March 2027 for homes heated by oil or LPG with no mains gas (gov.uk, checked 28 September 2026).
Charging an EV in Colchester
A 12-panel roof in Colchester makes about 830 kWh in July. A typical home uses around 70 kWh of that in daylight (the calculator's typical-use settings), which leaves most of the month's output for an EV or for export.
Renters and flat owners with private off-street parking can get 75% off a chargepoint and its installation, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above adds a 7.4kW smart charger from £1,100 installed.
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 Colchester
Guidance is nationwide, so the benchmarks hold in Colchester: repair costs, service scope, and when the inverter is the real fault.
Solar in Colchester: your questions answered
What could a roof in Colchester generate?
PVGIS puts a roof in Colchester at 1,082 kWh per kWp a year, 2.96 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,880 kWh a year, most of it between April and September.
What would 12 solar panels cost in Colchester?
£6,360 for 12 panels (6.36 kWp), the same as in every other place we cover, because solar is priced at £1,000 per kWp installed rather than by area. A battery adds its own installed price on top. Where Colchester differs is output: about 6,880 kWh a year from that system.
Do I need permission from the DNO for solar in Colchester?
Usually not in advance. UK Power Networks, the network operator for Colchester, only needs a G98 notification within 28 days of commissioning for systems up to 3.68kW per phase. Bigger inverter or battery outputs need G99 approval 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. "See our DNO explainer.
How much would export pay on a system in Colchester?
It is exported. With typical use and no battery, about 5,945 kWh of the 6,880 kWh a 12-panel system makes in Colchester goes to the grid, around £713 a year at 12p. A battery keeps more of it for the evening; the export rates table shows what suppliers pay.
Do solar panels work in winter in Colchester?
Yes, at a lower level. PVGIS gives Colchester 39.1 kWh per kWp in December and 40.6 in January, so a 12-panel system makes about 250 kWh and 260 kWh in those months, against 830 kWh in July. Winter output mostly covers daytime use rather than exporting.
How Colchester compares with its neighbours
How the towns nearest Colchester compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Colchester |
|---|---|---|
| Colchester | 1,082 | this town |
| Berechurch | 1,091 | +9 kWh |
| Brightlingsea | 1,109 | +27 kWh |
| Tiptree | 1,077 | −5 kWh |
| Hadleigh | 1,072 | −10 kWh |
| Halstead | 1,062 | −20 kWh |
| Sudbury | 1,054 | −28 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 Colchester: Solar panels in Colchester from OVO Solar & Battery
Also near Colchester
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 Colchester homeowners
Sourced, dated and written by us. The same ground we cover on your free call.
East, west or south facing: what your roof direction really costs you
An east west split gives up about a fifth of the annual total, and can still be worth more than south.
Read the guide →Does a standalone battery actually pay back?
No panels means one job: buy cheap, use later. The tariff decides whether it pays.
Read the guide →Charging an EV from your own solar
Every surplus kWh is 3.6 to 5 miles. Whether that beats a 7p overnight rate is arithmetic.
Read the guide →How an air source heat pump actually works
It moves heat rather than making it. The cycle, the efficiency numbers and the trade-offs.
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 →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.