Dorset
Solar panels in Dorchester, designed on a free call.
Twelve panels (6.36 kWp) here make about 7,120 kWh a year for £6,360 installed, designed around your roof on a free 30-minute video call.
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How much a Dorchester roof makes, month by month
Dorchester's best month is July, at 137.3 kWh per kWp; December manages 38.6. Over the year that comes to 1,119 kWh per kWp, 3% above our Dorset county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 42.5 |
| February | 59.7 |
| March | 97.8 |
| April | 128 |
| May | 136 |
| June | 135 |
| July | 137 |
| August | 122 |
| September | 103 |
| October | 69 |
| November | 50.5 |
| December | 38.6 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 1,119 kWh per kWp in Dorchester against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Dorchester 21% above it.
How Dorchester compares
Small towns rarely get published solar figures, so here are the numbers for Dorchester. It is one of 15 Dorset towns we track, and it ranks 2nd of 15 for solar yield, a town of 22,613 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,119 kWh per kWp a year, 3.07 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £989 of year one benefit, £247 of it from your own generation and £742 from export at 12p.
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 Dorchester's own yield.
Planning applications here go through Dorset; nationally, the House of Commons Library classes Dorchester 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.
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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 Dorchester's own coordinates (50.71026, -2.4428), 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.
SSEN and your Dorchester connection
The distribution network operator (DNO) for Dorchester is Scottish and Southern Electricity Networks (SSEN), which runs the Southern 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 SSEN is notified within 28 days of switch-on rather than asked beforehand.
Above that, G99 means applying before the work is booked. SSEN says it can take up to 45 working days to issue a quotation for a generation connection above 3.68kW per phase and up to 50kW.
Sources: NESO DNO licence areas (3 May 2024); SSEN, micro-generation connections page, checked 25 September 2026. G98 vs G99, explained.
Beyond the panels: heating and car charging in Dorchester
A heat pump in Dorchester
Heating demand peaks when solar is weakest. In Dorchester, a 12-panel system makes about 250 kWh in December and 270 kWh in January, a fraction of its 870 kWh in July, which is why a heat pump here is costed on its tariff first.
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 Dorchester
Dorchester's July output, about 870 kWh from 12 panels, is several times the 70 kWh or so a typical home uses in daylight that month on our calculator's settings. Daytime charging turns that surplus into miles.
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 Dorchester
If a system in Dorchester is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Common questions about solar in Dorchester
How much energy would 12 solar panels make in Dorchester?
Dorchester averages 3.07 peak sun hours a day, which PVGIS turns into 1,119 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 7,120 kWh, 68% of it between April and September.
Is solar more expensive in Dorchester?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Dorchester, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 7,120 kWh a year here, which is what drives payback.
Who is the network operator in Dorchester, and do I need a G99 application?
The operator is Scottish and Southern Electricity Networks (SSEN). 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. SSEN says it can take up to 45 working days to issue a quotation for a generation connection above 3.68kW per phase and up to 50kW. Your design call checks which route yours needs.
What could I earn from exporting in Dorchester?
On the 12p export scenario, a 12-panel system in Dorchester sends about 6,180 kWh a year to the grid, worth around £742. The export rates table compares what each supplier pays.
How does solar perform in Dorchester in the winter months?
December is the weakest month in Dorchester: about 250 kWh from 12 panels, against 870 kWh in July. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
How Dorchester compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Dorchester.
| Town | kWh per kWp a year | vs Dorchester |
|---|---|---|
| Dorchester | 1,119 | this town |
| Weymouth | 1,145 | +26 kWh |
| Bridport | 1,105 | −14 kWh |
| Blandford Forum | 1,083 | −36 kWh |
| Sherborne | 1,043 | −76 kWh |
| Upton | 1,094 | −25 kWh |
| Yeovil | 1,041 | −78 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 Dorchester: Solar panels in Dorchester from OVO Solar & Battery
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Further reading for Dorchester
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 →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 →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 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 →Choosing a tariff when you have solar, a battery and an EV
Solar, battery and EV want different tariffs. How to work out which one to protect.
Read the guide →What MCS certification actually is, and why your export payments depend on it
The badge that decides whether your solar earns export payments. It cannot be added later.
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.