How much do solar panels cost in Cardiff?
If you're considering solar panels for your home or business in Cardiff, you're joining a rising number of conscious consumers that we speak to every day. With rising energy prices and a growing interest in sustainable living, more people across South Wales are turning to solar to cut costs and carbon.
But how much do solar panels actually cost in Cardiff—and is it worth the investment?
Average Cost of Solar Panels in Cardiff
According to the Energy Saving Trust and Which?, the average cost of a standard 3.5kWp solar PV system (which is about 8-9 quality panels) in the UK is around £7,000. This includes installation, an inverter, and all necessary components but not battery storage. which.co.uk
Quality is an important aspect when choosing your panels as they produce more energy and tend to perform better over a longer period of time. See our blog here about it.
Note: Prices can vary depending on roof type, access, etc.
What About Battery Storage?
Adding a solar battery can increase your upfront cost by £2,000–£6,000, depending on capacity. However, it allows you to store excess energy and use it when the sun isn’t shining boosting your savings and energy independence. Read more about the impact of battery storage here.
The Tesla Powerwall is a popular brand that we are accredited to install but there are other brands that can be more suitable for your home.
Are There Local Incentives in Cardiff?
If you're a homeowner in Cardiff (or anywhere in Wales), you may be eligible for the Green Homes Wales Loan, a Welsh Government-backed scheme managed by the Development Bank of Wales.
What it offers:
Interest-free loans from £1,000 to £25,000
Up to 10 years to repay
6-month repayment holiday at the start
Expert support from a Retrofit Coordinator
Grant funding may also be available for specific measures
This scheme can help cover the cost of installing solar panels, battery storage, insulation, and other energy efficiency upgrades. Tewdric Energy is an approved installer and has completed a number of projects like this case study.
🔗 Learn more and apply here [developmen...bank.wales]
Is It Worth It?
The big question but the answer should be yes if:
You’re interested in pairing solar with EV charging or battery storage
You plan to stay in your home long-term
You use a lot of electricity during the day (working from home, car charging, etc)
You want to reduce your carbon footprint and invest in your property
Most households break even in less than 5 years, and solar panels typically last 25+ years.
How Tewdric Energy Can Help
At Tewdric Energy, we’ve helped homeowners, organisations and communities across South Wales, especially in Cardiff, install solar panels that are tailored to their needs. We offer:
Free site assessments
Transparent quotes
Expert installation and aftercare
Support and advice on exporting energy
Advice on battery storage and EV integration and energy suppliers
Ready to Explore Solar?
If you're based in Cardiff and want to know exactly how much solar could cost for your home, get in touch for a free, no-obligation consultation.
Let’s put power in your hands—from grid to ground.