Solar Panels Llanelli: Costs, Savings & Local Data
How much can solar panels save you in Llanelli?
A typical 4kW solar panel system in Llanelli generates around 3,880 kWh per year, saving you approximately £594 annually on electricity bills and export payments. With 1,530 hours of sunshine per year, most Llanelli homeowners see payback within 10–13 years.
A typical 4kW solar system in Llanelli can save you around £594 per year on electricity bills, with a payback period that makes it a strong long-term financial investment. Combined with the Smart Export Guarantee and 0% VAT, the financial case for solar in Llanelli is compelling.
Llanelli receives around 1,530 hours of sunshine per year. The Carmarthenshire coastal town has a mix of traditional terraces and modern estates. The Nest scheme provides grants for eligible Welsh households.
Solar panel key figures for Llanelli
1,530 hrs
Annual sunshine hours
HSG regional figure — no primary source recorded
3,880 kWh
Annual generation (4kW)
Based on 970 kWh/kWp yield
£594
Annual savings (4kW)
At 26.11p/kWh + SEG
~12 years
Estimated payback
£7,120 national DESNZ median, not a Llanelli price
Solar panel output and savings by system size in Llanelli
Generation and savings below are modelled for Llanelli's location, using a regional solar yield of 970 kWh/kWp on a south-facing roof with no shading.
The installed cost column is a national figure, not a Llanelli price. It is the DESNZ median of £1,780.25 per kW for systems up to 4 kW, derived from the MCS Installation Database and covering England, Scotland and Wales. No official dataset publishes installed costs at city level, and we will not imply one exists. Half of real installations cost more than the median.
| System Size | Panels | Cost | Annual Saving | Payback |
|---|---|---|---|---|
| 3 kW | ~8 panels | £5,340 | £445 | ~12 years |
| 4 kW | ~10 panels | £7,120 | £594 | ~12 years |
| 5 kW | ~13 panels | £8,480 | £742 | ~11 years |
Solar energy in Llanelli: 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.
Find out how much you could save
Answer a few questions and receive personalised solar quotes — completely free.
Start My QuoteFree, no obligation. Takes 2 minutes.
Frequently asked questions about solar panels in Llanelli
Solar panels in nearby areas
Showing areas near Llanelli. Solar conditions vary by location.
Find out how much you could save
Answer a few questions and receive personalised solar quotes — completely free.
Start My QuoteFree, no obligation. Takes 2 minutes.