Somerset
Solar panels in Bath, designed on a free call.
About 6,470 kWh a year from 12 panels in Bath, £6,360 installed, with your system designed on a free 30-minute video call.
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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.
or call 07782 219224
- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
How much a Bath roof makes, month by month
PVGIS puts Bath at 1,018 kWh per kWp a year, 2% below our Somerset county estimate. 68% of it arrives between April and September, peaking in July.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 38 |
| February | 53 |
| March | 89.6 |
| April | 116 |
| May | 125 |
| June | 122 |
| July | 126 |
| August | 111 |
| September | 95.2 |
| October | 65.3 |
| November | 44.4 |
| December | 33.4 |
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 1,018, Bath is 10% above it.
How Bath compares
Bath is one of 21 Somerset towns we track, and it ranks 13th of 21 for solar yield. The House of Commons Library settlement data classes it as a large town of 98,161 people. At 1,018 kWh per kWp a year, a typical 12 panel system here pays for itself in around 7.0 years on the 12p scenario: £911 of year one benefit against £6,360 installed, £247 of that benefit from cutting 26.32p imports with your own generation.
These are starting numbers, not a quote. The calculator below opens on Bath'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 here go through Bath and North East Somerset; nationally, the House of Commons Library classes Bath as a large 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 Bath at 51.37934, -2.36883 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
NGED and your Bath connection
Bath is served by National Grid Electricity Distribution (NGED): the town's centre falls inside its South West 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 NGED within 28 days of switch-on. Panel count does not decide it; the inverter and any battery do.
Above that, G99 means applying before the work is booked. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late.
Sources: NESO DNO licence areas (3 May 2024); NGED, guaranteed standards of performance table, checked 25 September 2026. G98 vs G99, explained.
Adding a heat pump or an EV charger in Bath
A heat pump in Bath
In December, the darkest month here, 12 panels in Bath make about 210 kWh. That is when a heat pump runs hardest, so its running cost in Bath comes down to the tariff and the flow temperature rather than the roof.
Grant support in England comes from the Boiler Upgrade Scheme: £7,500 for an air source or ground source heat pump, £2,500 for air-to-air, and an extra £1,500 until March 2027 where the home is heated by oil or LPG off the gas grid (gov.uk, checked 28 September 2026).
Charging an EV in Bath
Bath'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.
The calculator above includes a 7.4kW smart charger from £1,100 installed. Renters and flat owners with off-street parking can claim 75% of a chargepoint's cost, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026).
The packages, priced before anyone visits
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Bath
If a system in Bath is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Bath solar questions
How much energy would 12 solar panels make in Bath?
Bath averages 2.79 peak sun hours a day, which PVGIS turns into 1,018 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 6,470 kWh, 68% of it between April and September.
Is solar more expensive in Bath?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Bath, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 6,470 kWh a year here, which is what drives payback.
Who is the network operator in Bath, and do I need a G99 application?
The operator is National Grid Electricity Distribution (NGED). 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. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late. Your design call checks which route yours needs.
What could I earn from exporting in Bath?
On the 12p export scenario, a 12-panel system in Bath sends about 5,538 kWh a year to the grid, worth around £665. The export rates table compares what each supplier pays.
How does solar perform in Bath in the winter months?
December is the weakest month in Bath: about 210 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 Bath 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 Bath |
|---|---|---|
| Bath | 1,018 | this town |
| Bradford-on-Avon | 1,020 | +2 kWh |
| Keynsham | 1,020 | +2 kWh |
| Radstock | 1,003 | −15 kWh |
| Trowbridge | 1,022 | +4 kWh |
| Midsomer Norton | 1,005 | −13 kWh |
| Corsham | 1,025 | +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 Bath: Solar panels in Bath from OVO Solar & Battery
Also near Bath
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.
Further reading for Bath
Sourced, dated and written by us. The same ground we cover on your free call.
Single phase or three phase? The sixty-second check that decides your system size
One look at your fuse board sets the ceiling on how much solar you can connect.
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 →How time of use charging windows actually work
How a cheap overnight window is metered and billed, and what a battery does inside it.
Read the guide →What are the disadvantages of a heat pump? Six honest ones
Six real disadvantages, worth planning around rather than a reason to rule one out.
Read the guide →Why tariff choice moves payback more than kit choice
Identical kit, five times the export income. The tariff decision worked through with August 2026 rates.
Read the guide →HIES explained: what the badge actually protects, and when
What HIES protects: deposits up to 25 percent capped at 5,000 pounds, and your workmanship guarantee.
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.