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CarmarthenshireSolar panels in Carmarthen,
priced honestly.
Independent guidance on solar and battery storage for Carmarthen homes in Carmarthenshire: a free remote design call first, then an MCS-certified installation team for your area if you decide to go ahead. PVGIS puts a roof in Carmarthen at 980 kWh per kWp a year, 5% above our Carmarthenshire county estimate.
Start with your postcode
Free, no obligation. Takes about two minutes, and nobody visits your home.
What a roof in Carmarthen can generate
Real satellite data for Carmarthen, real installed pricing, and the same honest model we run for every place we cover.
How Carmarthen compares
Small towns rarely get published solar figures, so here are the numbers for Carmarthen. It is one of 3 Carmarthenshire towns we track, and it ranks 2nd of 3 for solar yield, a town of 16,875 people in the House of Commons Library settlement data. PVGIS gives its roofs 980 kWh per kWp a year, 2.68 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £883 of year one benefit, £247 of it from your own generation and £636 from export at 12p.
Treat these as calibration rather than a quote. The calculator below runs the same model, defaulted to Carmarthen's own yield, and at Carmarthen's 980 kWh per kWp it 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 Carmarthenshire; nationally, the House of Commons Library classes Carmarthen 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.
Price this properly, free →Your real roof, your real usage, on a free video call. No obligation.
A 12 panel, 6.36 kWp system in Carmarthen generates around 6,233 kWh a year, worth around £882 in year one on the 12p export scenario.
Generation is modelled from PVGIS satellite data for Carmarthen's own coordinates (51.8562, -4.31165), using the same 26.32p/kWh import value and £1,000 per kWp installed pricing as every Clearline estimate, with the full methodology, sourcing and assumptions set out on our help page.
Solar panel servicing and repair in Carmarthen
The same sourced benchmarks apply in Carmarthen as everywhere we cover: honest repair pricing and what a service should include.
Common questions about solar in Carmarthen
What could a roof in Carmarthen generate?
PVGIS puts a roof in Carmarthen at 980 kWh per kWp a year, 2.68 peak sun hours a day averaged across the seasons.
What does a typical solar system cost in Carmarthen?
A typical 12 panel, 6.36 kWp system in Carmarthen costs around £6,360 installed, at £1,000 per kWp before any battery.
Would a system in Carmarthen need a G99 application?
Most home solar and battery systems qualify for the simpler G98 notification, made to the network operator (DNO) after installation rather than before. A minority, usually larger systems, need the fuller G99 process instead. Your design call checks which applies in Carmarthen before anything is booked; our G98 vs G99 guide explains the difference in full.
What could I earn from exporting in Carmarthen?
On the 12p export scenario, that 12 panel system sends about 5,296 kWh a year to the grid, worth around £636. The tariff guide compares the export rates that could apply to your setup.
Get your free quote
Takes about two minutes. We work out your options, then confirm your free remote design call, on video, at a time that suits you. It starts with your roof and your numbers, and the design is built around them rather than around a product someone needs to shift.
Reading for Carmarthen homeowners
Independent, sourced and dated. The same ground we cover on your free call.
What is a DNO, and why does a company you have never heard of get a say in your solar?
The company that owns your street's cables decides what solar you can connect.
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Read the guide →The main home EV chargers, compared on what actually differs
Eight popular UK home chargers on cable, connectivity, warranty and tariff integration.
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 →The price cap explained, and what it does to solar payback
The cap limits unit rates, not bills. That changes what solar payback means.
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 →How Carmarthen compares with its neighbours
Same satellite dataset, same assumptions, so the differences are real geography rather than modelling noise.
| Town | kWh per kWp | Peak sun hours | vs Carmarthen |
|---|---|---|---|
| Carmarthen | 980 | 2.68 | — |
| Llanelli | 1,064 | 2.91 | +84 kWh |
| Ammanford | 969 | 2.65 | -11 kWh |
| Gorseinon | 1,040 | 2.85 | +60 kWh |
| Gowerton | 1,063 | 2.91 | +83 kWh |
| Clydach | 981 | 2.69 | +1 kWh |
| Swansea | 1,023 | 2.80 | +43 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 Carmarthen: Solar panels in Carmarthen from OVO Solar & Battery