Hampshire
Solar panels in Eastleigh, with the numbers shown.
A 12-panel roof in Eastleigh makes about 6,810 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Eastleigh's solar year
Eastleigh's best month is July, at 130.2 kWh per kWp; December manages 38.4. Over the year that comes to 1,070 kWh per kWp, 3% above our Hampshire county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 41.8 |
| February | 56.6 |
| March | 93.5 |
| April | 121 |
| May | 127 |
| June | 129 |
| July | 130 |
| August | 115 |
| September | 99.3 |
| October | 69.4 |
| November | 48.7 |
| December | 38.4 |
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 1,070, Eastleigh is 16% above it.
How Eastleigh compares
Among the places we publish figures for, Eastleigh is one of 45 Hampshire towns we track, and it ranks 31st of 45 for solar yield. It is a medium town in the House of Commons Library classification, with 50,838 residents, and its roofs see 2.93 peak sun hours a day across the year. That drives the standard 12 panel model to 6,805 kWh of generation, of which around 5,869 kWh is exported at 12p for £704 a year, with £247 saved on electricity you would otherwise buy at 26.32p.
These are starting numbers, not a quote. The calculator below opens on Eastleigh'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.
Planning applications in Eastleigh 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.
Modelled for Eastleigh at 50.97005, -1.34124 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
Who runs the grid in Eastleigh
Eastleigh is served by Scottish and Southern Electricity Networks (SSEN): the town's centre falls inside its Southern England licence area on NESO's boundary map.
Most home systems stay within 3.68kW per phase of inverter output, which puts them on G98, a notification to SSEN 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. 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.
Adding a heat pump or an EV charger in Eastleigh
A heat pump in Eastleigh
A heat pump does most of its work from November to February. Over those four months, 12 panels in Eastleigh make about 1,180 kWh, against 3,190 kWh from May to August, so winter heating runs mostly on grid electricity and the tariff matters more than the roof.
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 Eastleigh
From April to September, 67% of a Eastleigh roof's yearly output arrives, peaking at about 830 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.
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 Eastleigh
Faults, servicing and ageing inverters follow the same economics in Eastleigh as anywhere else, and the guides below price them plainly.
Common questions about solar in Eastleigh
What does a solar panel system produce in Eastleigh?
Each kWp of panels in Eastleigh makes 1,070 kWh a year on PVGIS figures, so a typical 12-panel system produces around 6,810 kWh, from about 240 kWh in December up to 830 kWh in July.
How much are solar panels in Eastleigh?
The price does not move by postcode. At £1,000 per kWp installed, 12 panels (6.36 kWp) come to £6,360 in Eastleigh before a battery. What Eastleigh changes is the return, about 6,810 kWh a year from that system, and your design call prices your actual roof.
Would a system in Eastleigh need approval from the network operator?
Eastleigh is on Scottish and Southern Electricity Networks' network (Southern England licence area). Systems up to 3.68kW per phase of inverter output follow G98: SSEN is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. 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. Our G98 vs G99 guide explains both routes.
How much can I earn from exporting solar in Eastleigh?
With typical use and no battery, a 12-panel system in Eastleigh exports about 5,869 kWh a year. At 12p per kWh that is roughly £704; 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 Eastleigh in winter?
It works, but the year is lopsided. 67% of a Eastleigh roof's output lands between April and September; the four months from November to February give about 1,180 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Eastleigh compares with its neighbours
Same satellite dataset, same assumptions, so the differences are real geography rather than modelling noise.
| Town | kWh per kWp a year | vs Eastleigh |
|---|---|---|
| Eastleigh | 1,070 | this town |
| Chandler's Ford | 1,064 | −6 kWh |
| West End | 1,085 | +15 kWh |
| Hedge End | 1,084 | +14 kWh |
| Southampton | 1,080 | +10 kWh |
| Bursledon | 1,092 | +22 kWh |
| Romsey | 1,063 | −7 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 Eastleigh: Solar panels in Eastleigh from OVO Solar & Battery
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Further reading for Eastleigh
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 →Adding a battery to solar panels you already own
Retrofitting a battery to working solar is straightforward. The paperwork is where people trip up.
Read the guide →What it really costs to charge an EV at home versus in public
Home off-peak charging costs a fraction of the public price. The arithmetic, and the tariff it depends on.
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 →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 →How to check an MCS certificate is genuine, before the deposit leaves your account
A logo proves nothing. Certification is business specific, technology specific and checkable.
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.