Solar panels in Cardiff — free quotes from MCS-certified installers.
Generate your own electricity, slash your bills and earn from the Smart Export Guarantee. Vetted local installers covering Cardiff, Penarth, Barry, Caerphilly and the wider CF postcode area.
Why solar makes sense in Cardiff.
Cardiff and the South Wales coast benefit from some of the best solar irradiance in Wales — and with rising energy prices, the case for self-generation has never been stronger.
- Average sun hours / yr
- ~1,450
- Typical 4 kWp output / yr
- ~3,500 kWh
- Postcode coverage
- CF1–CF99
- Typical install time
- 1–2 days
Built for the South Wales housing stock
Cardiff homes range from Victorian terraces in Cathays and Roath to detached new-builds in Pontprennau and Pentwyn. We work with installers experienced in slate roofs, tile roofs, and mixed-pitch dormers — and who know which CF postcodes need extra notice for scaffolding access.
Most homes in CF10, CF11, CF14, CF23 and CF24 qualify for a no-planning-permission install under permitted development rights. Listed buildings and conservation areas (Pontcanna, Roath Park, Llandaff) are checked individually before we quote.
From Cardiff quote to powering up — 4 steps.
Quick online quote
Tell us about your Cardiff property in 60 seconds. We match you with installers who cover your CF postcode.
Free home survey
An MCS installer visits your home and surveys roof, orientation and shading. Fixed-price quote, no obligation.
Professional install
Most Cardiff installs complete in 1–2 days. All MCS & NICEIC paperwork handed over.
Save & earn
Bills drop immediately, and SEG export payments start once you switch to a solar tariff.
Cardiff solar panel questions, answered.
How much do solar panels cost in Cardiff?
A 4 kWp residential system in Cardiff typically costs £6,500–£9,500 fully installed, including 0% VAT (until 31 March 2027). Larger systems and systems with battery storage range from £10,000–£14,500. Cardiff terraced homes often need additional scaffolding for restricted-access lanes — your installer will price this in upfront.
Do solar panels work well in South Wales?
Yes. Cardiff and the South Wales coast receive around 1,400–1,500 sun hours per year — comparable to many parts of southern England. A typical 4 kWp Cardiff system generates roughly 3,400–3,600 kWh per year, easily covering most of a family's electricity needs.
Do I need planning permission for solar panels in Cardiff?
For most Cardiff homes, solar PV falls under permitted development. Listed buildings and conservation areas (Pontcanna, Llandaff, Roath Park) require a check, and your installer will handle that. No planning permission is needed for the majority of CF properties.
Are MCS-certified solar installers available in Cardiff?
Yes. We work with MCS-certified, RECC-member solar installers covering all CF postcodes — Cardiff, Penarth, Barry, Caerphilly, Rhondda Cynon Taf and the wider South Wales region.