Get in touch with MCS-certified solar panel installers in Cardiff
Looking for reliable solar panel installers in Cardiff? Tell us about your project and receive up to four tailored offers from trusted local providers.
Fill out the form
Tell us your solar needs and details about your property so we can match you with eligible suppliers.
Get contacted
Our partners will then contact you directly with a phone call, text message, or an email to give you offers.
Make your decision
Once you've heard all offers, you're free to choose the one that suits your needs best or reject them all.
Once this brief consultation is complete, the installers create personalised quotes based on your home and budget. As they are competing for your project, you benefit from competitive prices and a strong focus on quality.
Our service is completely free and non-binding, so you are not required to accept any of the offers you receive.
You can get started in just a few minutes by filling in the form with your contact details and solar requirements.
Why solar panels make sense in Cardiff
Favourable conditions for solar energy
Cardiff enjoys excellent conditions for solar generation. According to the Global Solar Atlas, the specific photovoltaic power output for Cardiff is approximately 1,040.8 kWh/kWp, making it one of the strongest regions in the UK for residential solar.
Consistent output despite cloud cover
Despite Wales' mixed weather, modern solar panels operate efficiently using daylight rather than direct sunlight.
Cardiff has a diffuse horizontal irradiation level of 576.5 kWh/m², representing the scattered light that still reaches solar panels on cloudy days. This ensures consistent, year-round electricity generation.
Rising energy prices
With UK electricity prices remaining high, producing your own renewable energy is one of the most effective ways to reduce long-term energy costs and protect your household from future price rises.
All installers we work with are fully MCS-certified, so your system will meet SEG requirements.
The Smart Export Guarantee (SEG)
Homeowners can earn payments for surplus electricity fed back into the National Grid through the Smart Export Guarantee (SEG) scheme. To be eligible, your installation must be commissioned by an installer certified by the Microgeneration Certification Scheme (MCS) or an equivalent body such as Flexi-Orb.
Public support and incentives
Solar panels benefit from 0% VAT on installation, helping lower upfront costs. This tax relief runs until March 2027, making now a good time to take advantage of the saving.
Local councils may offer additional support through community energy initiatives and sustainability programmes.
Solar panel uptake across Cardiff
Cardiff is a leading Welsh city for residential solar energy, with a strong and growing community of homeowners choosing clean, renewable generation.
More than 7,300 Cardiff homes powered by solar
According to the Department for Energy Security & Net Zero, 7,305 domestic solar installations were operating across Cardiff as of September 2025. This demonstrates strong local confidence in solar technology as a long-term investment.
Common solar system sizes for Cardiff homes
For a standard semi-detached home, a typical solar installation ranges from 4 kW to 6 kW. Most homeowners can expect costs of £6,000 to £10,000, depending on roof complexity, panel type, and system design.
Ready to lower your energy bills and generate clean electricity at home? Take two minutes to complete our form, and we'll connect you with trusted, local solar installers in Cardiff.
Solar panel questions for Cardiff homeowners
Do solar panels work in Welsh weather?
Yes. Modern PV (photovoltaic) technology works using daylight rather than heat or direct sunshine. With a high specific output of over 1,000 kWh/kWp, Cardiff offers excellent conditions for solar generation, even on cloudy days.
How much does a solar panel system cost?
Most residential solar panel systems cost between £6,000 and £10,000.
The final price depends on system size, roof characteristics, and whether you add extras such as battery storage.
How long do solar panels last?
High-quality solar panels typically come with 25-year performance warranties. In practice, many systems last 30 years or more with minimal maintenance, offering decades of reliable energy production.
Do I need planning permission for solar panels?
Most residential solar installations in Cardiff fall under Permitted Development, meaning no planning permission is required.
However, listed buildings and properties within conservation areas may require additional permissions. A certified installer will advise you on any property-specific requirements.
Who we are and how we help
We help homeowners across the UK access reliable solar panel solutions. As part of Nettbureau, a European comparison platform with more than a decade of experience, we connect you for free with vetted, MCS-certified installers who can provide tailored offers for your home.
Skip the time-consuming research. We match you with local professionals so you can compare clear quotes and choose the system that best suits your property and budget.
Pick the best offer
You can easily compare the offers and find out what is most important to you.
All you need to do is fill out our short form with your needs.
Save the environment
Investing in solar energy is an environmentally friendly measure that saves the environment whilst simultaneously lowering your electricity bills.
Free and non-binding
It's free and non-binding to receive offers through Solarenergy.co.uk.
If you're not satisfied with any of the offers, you can easily decline them all.
Save time
Skip the hassle of chasing companies that offer good solar energy systems. Let the suppliers come to you instead.
Save money
Get offers from up to four competing solar suppliers and choose the one that meets your needs the most.
No obligations
Choose whether you want to accept an offer or not. If you're not happy with any of them, you're free to decline them all.
Our awards
