Hampshire
Solar panels in Winchester, with the numbers shown.
Twelve panels (6.36 kWp) here make about 6,600 kWh a year for £6,360 installed, designed around your roof 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
What a roof in Winchester can generate
Winchester's best month is July, at 125.6 kWh per kWp; December manages 35. Over the year that comes to 1,037 kWh per kWp, 1% below our Hampshire county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 40.8 |
| February | 55.1 |
| March | 91.5 |
| April | 118 |
| May | 124 |
| June | 124 |
| July | 126 |
| August | 112 |
| September | 96.6 |
| October | 67.5 |
| November | 46.8 |
| December | 35 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 1,037 kWh per kWp in Winchester against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Winchester 12% above it.
How Winchester compares
Among the places we publish figures for, Winchester is one of 45 Hampshire towns we track, and it ranks joint 36th of 45 for solar yield. It is a medium town in the House of Commons Library classification, with 50,588 residents, and its roofs see 2.84 peak sun hours a day across the year. That drives the standard 12 panel model to 6,595 kWh of generation, of which around 5,659 kWh is exported at 12p for £679 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 Winchester's own yield.
Planning applications in Winchester go to its own council, and the House of Commons Library classes it as a 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.
Generation is modelled from PVGIS satellite data for Winchester's own coordinates (51.06268, -1.32343), 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 Winchester network
The distribution network operator (DNO) for Winchester 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.
A bigger inverter or battery output needs a G99 application in advance. 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 Winchester
A heat pump in Winchester
Solar and a heat pump pull in opposite directions through the year: Winchester's roofs make 1,130 kWh from November to February on a 12-panel system, and 3,090 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 Winchester
From April to September, 68% of a Winchester roof's yearly output arrives, peaking at about 800 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.
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 Winchester
Guidance is nationwide, so the benchmarks hold in Winchester: repair costs, service scope, and when the inverter is the real fault.
Common questions about solar in Winchester
What could a roof in Winchester generate?
PVGIS puts a roof in Winchester at 1,037 kWh per kWp a year, 2.84 peak sun hours a day averaged across the seasons. A 12-panel, 6.36 kWp system makes about 6,600 kWh a year, most of it between April and September.
What would 12 solar panels cost in Winchester?
£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 Winchester differs is output: about 6,600 kWh a year from that system.
Do I need permission from the DNO for solar in Winchester?
Usually not in advance. SSEN, the network operator for Winchester, 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. 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. "See our DNO explainer.
How much would export pay on a system in Winchester?
It is exported. With typical use and no battery, about 5,659 kWh of the 6,600 kWh a 12-panel system makes in Winchester goes to the grid, around £679 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 Winchester?
Yes, at a lower level. PVGIS gives Winchester 35 kWh per kWp in December and 40.8 in January, so a 12-panel system makes about 220 kWh and 260 kWh in those months, against 800 kWh in July. Winter output mostly covers daytime use rather than exporting.
How Winchester compares with its neighbours
How the towns nearest Winchester compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Winchester |
|---|---|---|
| Winchester | 1,037 | this town |
| Chandler's Ford | 1,064 | +27 kWh |
| Eastleigh | 1,070 | +33 kWh |
| Romsey | 1,063 | +26 kWh |
| West End | 1,085 | +48 kWh |
| Hedge End | 1,084 | +47 kWh |
| Southampton | 1,080 | +43 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 Winchester: Solar panels in Winchester 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 Winchester homeowners
Sourced, dated and written by us. The same ground we cover on your free call.
Best solar panels UK 2026: what the datasheets actually say
One pick per job, the specs behind each, and what moves payback more than the badge.
Read the guide →Inside a home battery: capacity, power and losses
Usable capacity, kW output, round trip losses and chemistry, in plain terms.
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 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 →Which tariffs are actually built for battery charging
A battery buys cheap and uses dear. The tariff decides how much that is worth.
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.