✆ 0800 123 4567
✉ help@greenreachenergy.co.uk
Mon–Sat 8am–8pm
New 0% VAT on solar panels — check your eligibility →
Solar Panels

Solar Panels in Cardiff — 2026 Guide

By Rachel O'Connor, Contributor · Updated April 2026 · Cardiff, South Glamorgan

Solar Panels hero image
Quick answer: Solar Panels in Cardiff cost between £4120 and £8540 installed (2026 prices). The average homeowner may save an estimated £540 per year on energy bills. Government support: 0% VAT (saves ~£600).
£6280
Est. installed cost
£540/yr
Est. annual saving
~10 yrs
Est. payback
1557 hrs
Sunshine hours

Is Cardiff a Good Place for Solar Panels?

Cardiff receives an average of 1557 hours of sunshine per year — slightly above 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).

Cardiff has a population of 362,000, and the area falls within the Wales region. We recommend getting at least 3 quotes to compare prices.

Cardiff

Solar Panels Costs in Cardiff (2026)

System size Typical cost Est. annual saving Est. payback
3kWp £3260–£5030 £370/yr 11 yrs
4kWp (most common) £5170–£7170 £630/yr 10 yrs
6kWp £7340–£10040 £920/yr 9 yrs

Source: Green Reach Energy research, March 2026. Prices are estimates and include installation and VAT. Actual costs may vary.

Get your free Solar Panels quote in Cardiff

Compare prices from up to 3 installers near you. No obligation, quick and easy.

Get Free Quotes →

Available Grants in Cardiff

Eligible installations qualify for 0% VAT (saves ~£600) — check your eligibility.

Solar Panels grants in Cardiff

Find Installers in Cardiff

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.

Get Free Quotes →

What to check before hiring an installer in Cardiff

  • Qualifications — check the installer holds relevant qualifications and certifications for solar panels before signing any contract
  • Local references — ask for completed jobs in Cardiff or South Glamorgan
  • 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
Solar Panels installer in Cardiff

Frequently Asked Questions

How much do solar panels cost in Cardiff?
Solar Panels in Cardiff cost between £4120 and £8540 installed. A typical mid-range system costs around £6280 including installation and VAT (estimated, based on our research).
Is there a grant for solar panels in Cardiff?
Yes — solar panel installations currently qualify for 0% VAT (saves ~£600), saving homeowners several hundred pounds. Use a qualified installer to qualify.
How long is the payback period in Cardiff?
The estimated payback period in Cardiff is around 10 years, based on estimated annual savings of around £540. Actual payback depends on your energy usage, roof orientation and tariff.
Do I need planning permission in Cardiff?
Most solar panels installations fall under permitted development rights and do not require planning permission. However, listed buildings, conservation areas and flats may need approval. Always check with your local planning authority in Cardiff before installation.
How do I find a good installer in Cardiff?
We recommend getting at least 3 quotes from qualified installers. Check online reviews and verify that the installer holds relevant qualifications before signing any contract.