Solar Panels Carmarthen: Costs, Savings & Local Data
How much can solar panels save you in Carmarthen?
A typical 4kW solar panel system in Carmarthen generates around 3,840 kWh per year, saving you approximately £556 annually on electricity bills and export payments. With 1,520 hours of sunshine per year, most Carmarthen homeowners see payback within 10–13 years.
Carmarthen receives around 1,520 hours of sunshine each year. A typical 4kW solar panel system here can generate approximately 3,840 kWh annually, providing meaningful savings on your electricity bills and reducing your household's carbon footprint.
Carmarthen receives around 1,520 hours of sunshine per year. Wales' oldest town has a mix of period properties and modern developments. The surrounding Carmarthenshire countryside has many off-gas farmhouses where solar is particularly valuable.
Solar panel key figures for Carmarthen
1,520 hrs
Annual sunshine hours
Met Office / PVGIS regional data
3,840 kWh
Annual generation (4kW)
Based on 960 kWh/kWp yield
£556
Annual savings (4kW)
At 24.5p/kWh + SEG
~12 years
Estimated payback
Based on average 4kW system cost
Solar panel savings by system size in Carmarthen
The table below shows estimated costs, annual savings, and payback periods for different solar panel system sizes in Carmarthen. Figures are based on a south-facing roof with no shading, using Carmarthen's regional solar yield of 960 kWh/kWp.
| System Size | Panels | Cost | Annual Saving | Payback |
|---|---|---|---|---|
| 3 kW | ~8 panels | £4,500–£6,500 | £418 | ~13 years |
| 4 kW | ~10 panels | £5,500–£8,000 | £557 | ~12 years |
| 5 kW | ~13 panels | £6,500–£9,500 | £696 | ~11 years |
Solar energy in Carmarthen: local context
Wales benefits from the Welsh Government's active support for renewable energy. The varied landscape means solar performance differs between the sunnier south coast and the hillier inland areas, but most Welsh homes can benefit from solar.
Welsh homeowners may benefit from additional support through the Welsh Government's energy schemes, alongside the UK-wide Smart Export Guarantee and 0% VAT.
Take the next step
Connect with trusted local installers and get accurate pricing for your home.
Get My Free QuoteFree, no obligation. Takes 2 minutes.
Frequently asked questions about solar panels in Carmarthen
Solar panels in nearby areas
Showing areas near Carmarthen. Solar conditions vary by location.
Take the next step
Connect with trusted local installers and get accurate pricing for your home.
Get My Free QuoteFree, no obligation. Takes 2 minutes.