Hampshire
Solar panels in Romsey, designed on a free call.
About 6,760 kWh a year from 12 panels in Romsey, £6,360 installed, with your system designed on a free 30-minute video call.
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- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
How much a Romsey roof makes, month by month
PVGIS puts Romsey at 1,063 kWh per kWp a year, 2% above our Hampshire county estimate. 67% of it arrives between April and September, peaking in July.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 42.3 |
| February | 55.8 |
| March | 92.7 |
| April | 120 |
| May | 126 |
| June | 128 |
| July | 130 |
| August | 114 |
| September | 99 |
| October | 68.5 |
| November | 49 |
| December | 37.8 |
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 1,063, Romsey is 15% above it.
How Romsey compares
Small towns rarely get published solar figures, so here are the numbers for Romsey. It is one of 45 Hampshire towns we track, and it ranks 33rd of 45 for solar yield, a town of 20,063 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,063 kWh per kWp a year, 2.91 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £946 of year one benefit, £247 of it from your own generation and £699 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 Romsey's own yield.
Any planning application in Romsey sits with Test Valley, and its official House of Commons Library settlement class is 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 Romsey's own coordinates (50.99429, -1.4811), 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.
The network operator for Romsey
The distribution network operator (DNO) for Romsey is Scottish and Southern Electricity Networks (SSEN), which runs the Southern England licence area.
G98 is the simple route. If the inverter, plus any battery, stays at or under 3.68kW per phase, SSEN only has to be told within 28 days after the system is commissioned.
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 Romsey
A heat pump in Romsey
In December, the darkest month here, 12 panels in Romsey make about 240 kWh. That is when a heat pump runs hardest, so its running cost in Romsey comes down to the tariff and the flow temperature rather 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 Romsey
Romsey's July output, about 820 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.
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.
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 Romsey
If a system in Romsey is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Common questions about solar in Romsey
How much energy would 12 solar panels make in Romsey?
Romsey averages 2.91 peak sun hours a day, which PVGIS turns into 1,063 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 6,760 kWh, 67% of it between April and September.
Is solar more expensive in Romsey?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Romsey, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 6,760 kWh a year here, which is what drives payback.
Who is the network operator in Romsey, 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 Romsey?
On the 12p export scenario, a 12-panel system in Romsey sends about 5,824 kWh a year to the grid, worth around £699. The export rates table compares what each supplier pays.
How does solar perform in Romsey in the winter months?
December is the weakest month in Romsey: about 240 kWh from 12 panels, against 820 kWh in July. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
How Romsey compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Romsey.
| Town | kWh per kWp a year | vs Romsey |
|---|---|---|
| Romsey | 1,063 | this town |
| Chandler's Ford | 1,064 | +1 kWh |
| Totton | 1,073 | +10 kWh |
| Eastleigh | 1,070 | +7 kWh |
| Southampton | 1,080 | +17 kWh |
| West End | 1,085 | +22 kWh |
| Winchester | 1,037 | −26 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 Romsey: Solar panels in Romsey 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.
Guides worth reading before your call
Sourced, dated and written by us. The same ground we cover on your free call.
DNO application timescales, network by network: from a G98 notification to a G99 approval
Fit and notify within 28 days, or wait ten working days to 45 for a yes. System size decides which.
Read the guide →GivEnergy in administration: what owners should do now
The sourced timeline, the warranty position, and the owner's checklist for this month.
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.