Wiltshire
Solar panels in Stratton St Margaret, designed on a free call.
A 12-panel roof in Stratton St Margaret makes about 6,490 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Sunlight in Stratton St Margaret, in numbers
Stratton St Margaret's best month is July, at 125.1 kWh per kWp; December manages 36. Over the year that comes to 1,020 kWh per kWp, 2% below our Wiltshire county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 39.2 |
| February | 51.9 |
| March | 88.9 |
| April | 116 |
| May | 123 |
| June | 122 |
| July | 125 |
| August | 110 |
| September | 96.4 |
| October | 66.2 |
| November | 45.5 |
| December | 36 |
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: Stratton St Margaret makes 1,020 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Stratton St Margaret is 10% above it.
How Stratton St Margaret compares
Small towns rarely get published solar figures, so here are the numbers for Stratton St Margaret. It is one of 20 Wiltshire towns we track, and it ranks joint 11th of 20 for solar yield, a town of 21,856 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,020 kWh per kWp a year, 2.79 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £913 of year one benefit, £247 of it from your own generation and £666 from export at 12p.
Treat these as calibration rather than a quote. The calculator below runs the same model, opened on Stratton St Margaret's own yield, and prices a 12 panel system at £6,360 installed before any battery. Your free design call reworks every number for your actual roof, its shading and your usage.
Planning applications here go through Swindon; nationally, the House of Commons Library classes Stratton St Margaret 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.
The figures use PVGIS for the centre of Stratton St Margaret (51.58542, -1.74632), a 26.32p/kWh import price and £1,000 per kWp installed; see the help page for the full method.
SSEN and your Stratton St Margaret connection
On NESO's licence-area map, Stratton St Margaret is in Southern England, which Scottish and Southern Electricity Networks (SSEN) operates. That makes SSEN the network operator for any system fitted here.
Below 3.68kW per phase of inverter and battery output, the G98 route applies: the installation is notified to SSEN within 28 days of commissioning, with no prior approval.
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.
Heat pumps and EV charging in Stratton St Margaret
A heat pump in Stratton St Margaret
In December, the darkest month here, 12 panels in Stratton St Margaret make about 230 kWh. That is when a heat pump runs hardest, so its running cost in Stratton St Margaret 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 Stratton St Margaret
Stratton St Margaret's July output, about 800 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 Stratton St Margaret
If a system in Stratton St Margaret is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Stratton St Margaret solar questions
How much energy would 12 solar panels make in Stratton St Margaret?
Stratton St Margaret averages 2.79 peak sun hours a day, which PVGIS turns into 1,020 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 6,490 kWh, 68% of it between April and September.
Is solar more expensive in Stratton St Margaret?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Stratton St Margaret, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 6,490 kWh a year here, which is what drives payback.
Who is the network operator in Stratton St Margaret, 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 Stratton St Margaret?
On the 12p export scenario, a 12-panel system in Stratton St Margaret sends about 5,551 kWh a year to the grid, worth around £666. The export rates table compares what each supplier pays.
How does solar perform in Stratton St Margaret in the winter months?
December is the weakest month in Stratton St Margaret: about 230 kWh from 12 panels, against 800 kWh in July. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
How Stratton St Margaret compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Stratton St Margaret.
| Town | kWh per kWp a year | vs Stratton St Margaret |
|---|---|---|
| Stratton St Margaret | 1,020 | this town |
| Swindon | 1,018 | −2 kWh |
| Highworth | 1,018 | −2 kWh |
| Wroughton | 1,019 | −1 kWh |
| Royal Wootton Bassett | 1,018 | −2 kWh |
| Faringdon | 1,030 | +10 kWh |
| Marlborough | 1,017 | −3 kWh |
PVGIS v5.2 for each town centroid, identical assumptions throughout. A few kWh either way is weather-year noise; a spread beyond about 30 kWh per kWp is real geography.
Also for Stratton St Margaret: Solar panels in Stratton St Margaret from OVO Solar & Battery
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Guides worth reading before your call
Sourced, dated and written by us. The same ground we cover on your free call.
G98 vs G99: the 28-day form and the eight-week wait, in plain English
One number on your quote decides between a formality and an eight week wait.
Read the guide →Sigenergy SigenStor review: the 5-in-1 tower examined
The 5-in-1 tower reviewed by a site that does not sell it, warranty arithmetic included.
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 →What MCS certification actually buys you on a heat pump job
The gate on the £7,500 grant, the design standard behind your running costs, and the noise sign-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 →NAPIT, NICEIC and competent person schemes: who tells building control about your solar
Solar work is notifiable. A competent person scheme means your installation team notifies, not you.
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.