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Power Your Home with Solar Energy

Cut your bills by up to 70% with trusted, expert solar installation across Wales.

✅ MCS & RECC Accredited
✅ No Subcontractors – Only In-House Experts
✅ 13+ Years’ Experience
✅ Serving Homes & Businesses Across Wales

🔋 High-efficiency panels. Expert support. Long-term savings

Telephone: 01269 500388  I  Email: info@celticgreenenergy.co.uk  

Solar Panel and Renewable Energy Solutions in Wales

Celtic Green Energy is one of Wales’ trusted independent solar panel installers. Since 2013, we’ve been helping homeowners, farms, and businesses reduce energy bills with high-quality solar PV systems and battery storage.

We only use best-in-class solar panels, inverters, and energy storage systems — built for performance, durability, and long-term savings.

As an approved Octopus Energy installer, we offer access to exclusive smart tariffs and the latest in renewable technology.

Whether you want to cut costs, lower your carbon footprint, or gain energy independence, we’re here to help.

Start your journey to a greener future today.

Renewable energy solutions:

Learn more about our range of renewable energy solutions that will help you find the best option for your needs.

Follow the links on the following categories.

Solar Panel Installation
Solar PV panels are the perfect way to capture FREE energy from the Sun's rays and convert it into electricity. You can learn more about the various solutions we have available to suit your needs here.
Heat Pump Installation
Upgrade to an energy-efficient heat pump. We install and maintain air and ground source heat pumps, helping homes and businesses cut energy costs and reduce carbon footprints. Enjoy reliable, eco-friendly heating.
Battery Storage
We have a variety of energy storage solutions that allows you to save excess solar energy so it can be used for another time, whether you want it for your heating in the evening, or to charge your electric vehicle overnight.
EV Charger Installation
We provide tailored solutions for both domestic and commercial customers. Our expert team seamlessly integrates EV charge points with the National Grid or Solar PV systems, ensuring maximum efficiency and sustainability.
Commercial Solutions
With growing demands on businesses and industry, renewable energy can offer significant cost savings and environmental demands for carbon CO2 reductions to help meet upcoming government energy targets
Underfloor Heating
Combined with our heat pumps, underfloor heating is the perfect solution for stylish, open plan living. It provides a warm and comfortable feeling underfoot, and come with a range of control options.

Owain Glynsolar

At Celtic Green Energy, we believe solar should be trusted, local, and proudly Welsh. That’s why we’ve introduced Owain Glynsolar — our new ambassador helping to spread the word about affordable, expert solar panel installations across South Wales.

From Carmarthenshire to Cardiff, Owain champions clean energy and lower bills for families and communities throughout the region. He’s not a celebrity — he’s one of us. And he’s here to show you how easy it is to go solar the Celtic way.

Customer Reviews

Switching to renewable energy isn’t just good for the planet — it’s helping homeowners across Wales save thousands on their energy bills. From solar panels and batteries to heat pumps and EV chargers, our customers are already seeing the benefits.

✅ Lower energy bills and reduced grid reliance
✅ Expert installations with 5-star customer service
✅ Real results from real homes across Wales

See why so many people trust Celtic Green Energy — and why they’re recommending us to their friends and family.

GRANTS

Switch to low-carbon heating and slash your energy bills with the Boiler Upgrade Scheme (BUS) in Wales. Homeowners can claim up to £7,500 towards an air or ground source heat pump—but funding is limited!

Lower your heating costs
Increase your home’s energy efficiency
Future-proof your home with renewable energy

Don’t miss out – check your eligibility today!

SOLAR SOLUTIONS

Refer a Friend and Get £150

At Celtic Green Energy, we believe that sustainability should be rewarding. With our Refer a Friend Scheme, you and your friends can earn up to £150 when they switch to solar panels, heat pumps, or battery storage with us. It’s our way of saying thank you for helping more people embrace clean, renewable energy.

BLOG

Discover the Benefits of Renewable Energy...

Do solar panels require maintenence?

Busting Solar Myths

BUSTING SOLAR MYTHS WITH OWAIN GLYNSOLAR At Celtic Green Energy, we know that making the switch to solar can raise a few questions – and let’s face it, there’s still

Owain Glynsolar Lord of the panels - Celtic Green Energy

Owain Glynsolar

Introducing Owain Glynsolar: Lord of the Panels At Celtic Green Energy, we’ve always believed that local energy deserves a local hero – and that supporting our communities starts at home.

Air Source Heat pump installation south wales celtic green energy

Why Install a Heat Pump in South Wales?

Why Heat Pumps Are Ideal for South Wales Homes If you’re considering heat pumps in South Wales, you’re not alone. With energy prices rising and generous grants like the £7,500

Want a quote? claim your FREE Solar Guide...

Download our Solar guide and receive a free quote..

We have compiled a really useful document to tell you all about solar power and how it can help you reduce your energy costs and improve your carbon footprint. You can download this FREE solar guide here – simply submit the following information and our energy advisor will be in touch:

Celtic Green Energy Domestic Booklet

CERTIFICATION

An Assurance of Quality...

You can download a copy of the Trustmark Customer Charter and Code of Conduct here:

Celtic Green Energy prides itself on the superior quality of work and customer satisfaction. We endeavour to follow meticulous attention to detail whilst providing our customers with the reassurance of long term aftercare and support. We maintain our high standards by following the guidelines and regulations of our industry codes of conduct.

Complaints & Feedback

We take all feedback seriously. If you have concerns, we encourage you to contact us directly:

Please Complaints and Feedback page for more information.

If we are unable to resolve your complaint, you can escalate it via our ADR provider, in line with TrustMark requirements. Details will be provided in your contract.

 

LOCATION

The Local Business with Nationwide Care

From our centrally based headquarters near Cross Hands in South Wales, Celtic Green Energy serves the whole of the Welsh principality with our team of specialist renewable energy installers, electricians, plumbers and technicians.

Map Of Wales

We are located near Cross Hands in Carmarthenshire

Celtic Green Vans Collection

Look out for our distinctive Celtic Green Energy vans

Trusted reviews

Celtic Green Energy Ltd

4.7 27 Reviews

CF
Celia Fearne 2024-12-19

Very impressed with the company

Very impressed with the company. The installers were very good and helpful. Everything was explained and easy to understand.

S
Sian 2024-10-15

Great Company, Fantastic heating engineer

Thank you Celtic Green Energy for sending Chris to service my Samsung Gen 6 ASHP. I will always use this company for my ASHP in future. Chris was so thorough , efficient and tons of patience dealing with all my many questions and explaining everything. He sorted my settings out and for the first time since having the pump fitted I feel I can relax and stop worrying constantly about the running of my ASHP. I would recommend this company(especially Chris) to anyone whether requiring a service or an ASHP installed. Great customer service too.

JiG
John in Gorslas. 2024-04-19

Air source Heat Pump installation, First routine service.

We had a complete installation of a central heating and domestic hot water system, powered from an air source heat pump by Celtic Green Energy, in January last year. It has been up and running perfectly for just over a year, so I called upon Celtic Green to carry out an annual service check and inspection. This was carried out on Tuesday of this week, after waiting for a dry day to service the heat pump which is sited outdoors. This was carried out and everything was found to be running perfectly with no leaks or faults apperent.

Friendly local customer support

Investing in renewable energy can be a minefield of complicated and confusing information with an abundance of bewildering online propaganda. To help address this issue, we offer our customers the opportunity to speak to someone in person about their individual circumstances, whether they own a small terraced house or a large factory.

Our Cross Hands based customer service team can offer you the comfort of local knowledge, professional expertise and friendly customer support.

If you have any questions or need further advice, feel free to contact us direct on 01269 500388 or contact us here:

Customer Service Celtic Green Energy
CHRISTMAS HOLIDAYS
Christmas Opening Card

OPENING TIMES

Our offices will be closing on Friday 22nd December and reopening on Monday 8th January

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