Solar panels in Merthyr Tydfil
£3,251 to £10,228 installed, 1,448 hours of sun a year, and 1,542 installations already in the council area.
What a system costs in Merthyr Tydfil
3kWp
£3,251–£4,348
Saves up to £373 a year. Pays back in about 10 years.
4kWp (most common)
£5,186–£6,558
Saves up to £580 a year. Pays back in about 10 years.
6kWp
£7,574–£10,228
Saves up to £853 a year. Pays back in about 10 years.
Source: Home Energy Quotes Cost Index, costs modelled June 2026, savings at the October to December 2026 price cap. Prices are estimates and include installation and VAT. Actual costs may vary.
Merthyr Tydfil in numbers
Published statistics for the Merthyr Tydfil council area, not our estimates.
At the end of 2025 there were 1,542 solar PV installations in the Merthyr Tydfil council area, about 59.8 for every 1,000 households, with 6.9 MW of capacity between them. The count covers every size of installation, on homes and businesses. 50% of homes with an EPC in the Merthyr Tydfil council area are rated D to G, and the median energy score is 68, which is band D.
| Merthyr Tydfil council area | Figure | Source |
|---|---|---|
| Solar PV installations (all sizes) | 1,542 (59.8 per 1,000 households) | DESNZ, end of 2025 |
| Homes with an EPC rated D to G | 50% | ONS, EPCs lodged to March 2025 |
| Median EPC energy score | 68 (band D) | ONS, EPCs lodged to March 2025 |
| Households on mains gas heating only | 84.3% | Census 2021, ONS |
| Electricity network operator | National Grid Electricity Distribution (South Wales) | NESO licence area boundaries |
Merthyr Tydfil is served by National Grid Electricity Distribution, the electricity network operator for South Wales. Solar panels have to be registered with the network operator. Your installer normally does this: smaller systems are notified after installation, and larger ones need approval before work starts.
These are published official statistics for the Merthyr Tydfil council area, which covers Merthyr Tydfil, not Home Energy Quotes estimates. Sources checked 6 October 2026.
Is Merthyr Tydfil a good place for solar panels?
Merthyr Tydfil receives an average of 1448 hours of sunshine per year — close to the UK average of 1,493 hours. Combined with Wales’s energy prices tracking the UK average, solar panels installations here may offer good value (individual results will vary).
Merthyr Tydfil has a population of 39,535, and the area falls within the Wales region. We recommend getting at least 3 quotes to compare prices.
Find Installers in Merthyr Tydfil
We recommend getting at least 3 quotes from qualified installers before making a decision. Check reviews, ask for local references, and make sure warranties are clearly stated in writing.
What to check before hiring an installer in Merthyr Tydfil
- Qualifications — check the installer holds relevant qualifications and certifications for solar panels before signing any contract
- Local references — ask for completed jobs in Merthyr Tydfil or Rhondda Cynon Taf
- Reviews — check online reviews before committing
- Warranty — product and workmanship warranties should be clearly stated in writing
- 3 quotes minimum — we recommend comparing at least three quotes to ensure you get a fair price
Questions about solar panels in Merthyr Tydfil
How much do solar panels cost in Merthyr Tydfil?
How many solar panel installations are there in Merthyr Tydfil?
Is there a grant for solar panels in Merthyr Tydfil?
Solar panels in Merthyr Tydfil qualify for 0% VAT until March 2027. In Great Britain, the Smart Export Guarantee pays for surplus electricity you export to the grid, at a rate each supplier sets.
How long is the payback period in Merthyr Tydfil?
Do I need planning permission in Merthyr Tydfil?
How do I find a good installer in Merthyr Tydfil?
Get quotes for your roof in Merthyr Tydfil
Up to three approved installers who cover Merthyr Tydfil may contact you. Free, no obligation.
Merthyr Tydfil on the map
Solar Panels in nearby towns
Last reviewed: . Costs are modelled estimates from the Home Energy Quotes Cost Index — see how we calculate them. Grant rates are checked against GOV.UK.