Solar Panels Cardiff — Free Quotes for Every Cardiff Area
Cut your energy bills with Cardiff solar panels from vetted, MCS-certified local installers. We cover solar installation in Cardiff including St Mellons, Whitchurch, Rhiwbina, Penarth, Ely and Caerphilly. Sun panels cost from £6,500 — get your free quote in 60 seconds.
Why Cardiff solar panels make financial sense right now.
Cardiff solar panels generate real savings — the city receives 1,400–1,500 sun hours a year, comparable to many parts of southern England. With electricity bills up 53% since 2021 and 0% VAT on solar installation in Cardiff until March 2027, the payback case has never been stronger for homeowners across all CF postcodes.
- Average sun hours / yr
- ~1,450
- Typical 4 kWp output / yr
- ~3,500 kWh
- Postcode coverage
- CF1–CF99
- Typical install time
- 1–2 days
Solar installation in Cardiff built for every roof type
Cardiff homes range from Victorian terraces in Cathays and Roath to detached new-builds in Pontprennau and Pentwyn. Our solar installation Cardiff network covers slate roofs, tile roofs, flat roofs and mixed-pitch dormers — and every installer knows which CF postcodes need extra notice for scaffolding access in narrow lanes.
Most homes in CF10, CF11, CF14, CF23 and CF24 qualify for a no-planning-permission solar installation in Cardiff under permitted development rights. Listed buildings and conservation areas (Pontcanna, Roath Park, Llandaff) are checked individually — your installer handles this before quoting.
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.
How much do Cardiff solar panels cost?
Sun panels cost in Cardiff depends on your system size, roof type, and whether you add battery storage. Here's what Cardiff homeowners actually pay in 2026 — including 0% VAT until March 2027.
3 kWp System
Best for smaller Cardiff homes and terraced houses in Roath, Canton, or Cathays. Generates around 2,550 kWh/year — saving approximately £600/yr at current energy prices.
4 kWp System Most popular
The most common Cardiff solar panel system size. Generates 3,400–3,600 kWh/year — saving £700–£850 annually. Suits semi-detached and detached homes across Whitchurch, Rhiwbina, Penarth and Ely.
4 kWp + Battery
Ideal for Cardiff homes wanting evening energy independence. Store surplus generation for use at night — reducing grid import to near zero during summer months. Popular in St Mellons and Caerphilly.
After that date, standard 20% VAT applies — adding £1,300–£1,900 to a typical Cardiff solar panel system. All quotes received before the deadline are protected at the 0% rate if installation completes in time.
Select solar panels in every Cardiff area
Our MCS-certified installers cover every CF postcode. Each Cardiff neighbourhood has its own housing stock characteristics — here's what that means for your solar installation.
Solar Panels in St Mellons, Cardiff (CF3)
St Mellons is one of Cardiff's fastest-growing residential areas, with a large proportion of post-2000 detached and semi-detached homes on well-planned estates. These newer builds typically have structurally strong roofs with good south or south-west orientation — ideal for solar panels in St Mellons, Cardiff.
Most St Mellons properties fall under CF3 postcodes and qualify for solar installation under permitted development — no planning permission required. Sun panels cost in St Mellons are in line with the Cardiff average: £6,500–£9,500 for a 4kWp system.
Get St Mellons quote →Solar Panels in Whitchurch, Cardiff (CF14)
Whitchurch is a predominantly residential north Cardiff suburb with a strong mix of 1930s–1960s semi-detached properties and more recent detached homes. Many Whitchurch roofs have excellent south-facing pitch — a natural fit for solar panels in Whitchurch, Cardiff.
The older housing stock in parts of Whitchurch may use Welsh slate — our installers use specialist slate hooks rather than drilling through tiles, protecting your roof's integrity while securing panels properly. Free roof condition check included in every survey.
Get Whitchurch quote →Solar Panels in Rhiwbina, Cardiff (CF14)
Rhiwbina is one of Cardiff's most desirable residential suburbs — a garden village settlement with a high proportion of detached homes and mature tree cover. The tree cover in some Rhiwbina roads can create partial shading, which our surveyors assess carefully using PVGIS shading analysis before specifying your system size.
For properties with some shading, solar panels in Rhiwbina, Cardiff can be paired with SolarEdge power optimisers or Enphase microinverters to maximise output from unshaded panels — preventing one shaded panel from reducing the whole system's performance. Your survey will confirm which setup delivers the best Cardiff solar panel payback for your specific Rhiwbina property.
Get Rhiwbina quote →Solar Panels in Penarth, Cardiff (CF64)
Penarth benefits from an elevated coastal position and excellent light levels — some of the best conditions for solar panels in Penarth, Cardiff of any area in South Wales. The town's Victorian seafront properties and Edwardian semis are popular choices, though their older roof structures benefit from a structural assessment before installation.
Penarth's conservation area covers parts of the town centre and seafront — our installers check each address before quoting to confirm whether planning permission is required. For most Penarth residential streets, solar installation proceeds under permitted development with no application needed.
Get Penarth quote →Solar Panels in Ely, Cardiff (CF5)
Ely is a large west Cardiff suburb with a high proportion of post-war council-built and privately owned terraced and semi-detached homes. The estate layouts in Ely often mean roofs face a consistent south-south-west orientation — well matched to UK solar generation peaks in the afternoon.
Solar panels in Ely, Cardiff are eligible for the Welsh Government's Warm Homes programme where applicable — our advisors check your eligibility as part of the free survey. Sun panels cost in Ely are the same as across Cardiff, starting from £6,500 for a 4kWp system with 0% VAT.
Get Ely quote →Solar Panels in Caerphilly (CF83)
Caerphilly and the surrounding Caerphilly County Borough offer some of the best value solar installations in South Wales. Lower building density means minimal shading from neighbouring properties, and a strong mix of detached and semi-detached homes with large south-facing roof areas makes solar panels in Caerphilly particularly cost-effective.
Caerphilly homeowners generating surplus electricity can earn 15–25p/kWh through the Smart Export Guarantee — adding £200–£350 in annual income on top of bill savings. Cardiff solar panels coverage extends fully into Caerphilly with the same MCS-certified installer network and 0% VAT pricing.
Get Caerphilly quote →Cardiff solar panel questions, answered.
How much do solar panels cost in Cardiff?
Sun panels cost in Cardiff range from £5,500–£7,500 for a 3kWp system to £6,500–£9,500 for the most popular 4kWp system — all including 0% VAT until March 2027. Systems with battery storage cost £10,000–£14,500. Costs are consistent across all Cardiff areas including St Mellons, Whitchurch, Rhiwbina, Penarth, Ely and Caerphilly. Cardiff terraced homes may need additional scaffolding — your installer prices this upfront.
Do Cardiff solar panels work well in South Wales weather?
Yes. Cardiff solar panels perform well year-round. The city receives 1,400–1,500 sun hours per year, comparable to many parts of southern England. A typical 4kWp Cardiff solar installation generates 3,400–3,600 kWh per year, saving £700–£850 on energy bills. Modern solar panels continue generating in cloudy conditions — they use diffuse daylight, not just direct sunshine.
Which Cardiff neighbourhoods do you cover for solar installation?
We cover all CF postcodes for solar installation in Cardiff — including St Mellons (CF3), Whitchurch (CF14), Rhiwbina (CF14), Penarth (CF64), Ely (CF5), Cardiff Bay (CF10), Caerphilly (CF83), Barry, Pontypridd and Rhondda Cynon Taf. Every quote includes a free roof survey at your address.
Do I need planning permission for solar panels in Cardiff?
For most Cardiff homes, solar PV falls under permitted development — no planning permission needed. Listed buildings and conservation areas in Pontcanna, Llandaff, and Roath Park require an individual check, which your installer handles before quoting. Properties in Penarth's conservation area are also checked individually. The majority of St Mellons, Whitchurch, Rhiwbina, Ely and Caerphilly addresses require no planning application.
Are MCS-certified solar installers available across all Cardiff areas?
Yes. Our MCS-certified, RECC-member solar installers cover all CF postcodes including St Mellons, Whitchurch, Rhiwbina, Penarth, Ely and Caerphilly. MCS certification is required for Smart Export Guarantee eligibility and 0% VAT — every installer in our Cardiff network holds current MCS accreditation.