Stellar energy project managed my Eco4 insulation, air source heat pump and battery installation. They were quick securing my grant funding. Each stage of the work was inspected and any snags were sor... See more
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Stellar Energy UK: Powering Homes, Empowering Communities At Stellar Energy UK, we believe energy should not only power homes, but also transform lives. As one of the UK’s leading renewable energy and retrofit specialists, our mission is simple yet powerful: to help homeowners and communities reduce their energy bills while contributing to a more sustainable planet. We work closely with trusted suppliers and energy companies including EON, OVO, Octopus Energy, and British Gas to deliver high-quality installations of solar panels, battery storage, heat pumps, insulation, and whole-house energy retrofits. Our expert teams are fully accredited and trained to the highest standards, ensuring every project meets strict compliance and safety regulations. From the initial consultation to installation and aftercare, we are dedicated to providing a seamless and professional customer experience. But what truly sets Stellar Energy UK apart is our heart for the community. We believe that business should be a force for good. That’s why we actively give back to the areas we serve. Stellar Energy proudly supports local charities, including Llanelli Mind and local disability sports teams, providing funding and resources that make a real difference in people’s lives. Whether it’s helping vulnerable households access grants to improve their home energy efficiency or sponsoring local grassroots initiatives, we are committed to empowering people as much as properties. When you choose Stellar Energy, you’re not just investing in your home’s energy future—you’re also supporting a company that believes in fairness, community, and environmental responsibility. Join thousands of satisfied customers who have experienced the Stellar difference. Lower your energy bills, reduce your carbon footprint, and help us build a brighter, greener future for everyone.
54 Stepney Street, SA15 3TG, United Kingdom
Replied to 75% of negative reviews
Typically replies within 24 hours
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Process went smoothly, with excellent staff from sales representatives to installation teams. Crew members were efficient, cleaned up thoroughly, and ensured everything worked perfectly. Andy, an electrician, stood out for his expertise in planning connection locations and routing, along with his friendly attitude, which was greatly appreciated.

Reply from Stellarenergy
Service provided was excellent, with a quick and efficient process from start to finish. Seven panels and a battery were installed flawlessly. Highly recommended for anyone considering their services.

Reply from Stellarenergy
My panels, inverter, and battery were installed quickly. The process was efficient, and I’m very happy with the result. Well done to the installation team!

Reply from Stellarenergy
Hi really happy with all the work with all rhe boys have done on my property very polite guys explained everything about work they were doing highly recomended 5 stars qualiry work thank you so much mathew jordan jenson many thanks again

Reply from Stellarenergy
Very friendly team carried out ventilation work inside my mother-in-laws house today. They were hardworking, reassuring and efficient and left the place spotless. Highly recommend them. Added bonus was a visit from their supervisor mid-morning to answer any questions we may have had. Very happy mother-in-law! Thank you.

Reply from Stellarenergy
Good service from both Darren & Shaun very efficient , explained everything I needed to know .

Reply from Stellarenergy
After thorough research and comparing multiple quotes, I chose Stellar Energy as my primary provider, and it was an excellent decision. I have a large array installed on a south-facing roof with two batteries, allowing me to become a net energy exporter. I expect to break even within five years. Stellar Energy is truly one of the better companies in the industry.

Reply from Stellarenergy
Every step of the process was superb, from initial inquiries about solar panels and purchasing to installation. A huge thanks to Ken for taking the time to explain how the system operates and for guiding me through the settings. I truly appreciate Stellar Energy’s exceptional service!

Reply from Stellarenergy
We were very impressed with the service from Stellar Energy. The team was knowledgeable and approachable, and we are extremely pleased with the system and the quality of the installation. The entire experience offered excellent quality and value.

Reply from Stellarenergy
The Stellar Energy team was great to work with. They covered every detail during the initial consultation and kept us informed throughout the process. The work was done to a high standard, with everything left neat and tidy. I have no hesitation in recommending them for solar and EV charger installations.

Reply from Stellarenergy
Ken was highly professional, punctual, and straightforward. The PV system was installed on time without any issues, even with the terrible weather, and it is performing beyond our expectations. His quote was the best among those I received, and I am pleased to give a five-star review

Reply from Stellarenergy
This has been an exciting new experience for us. The team installing the system is both professional and clearly skilled in their work. We highly recommend them, as every question we had was answered immediately. Well done to all involved!

Reply from Stellarenergy
Stellar Energy provided excellent support throughout the entire process, addressing all my questions and offering tailored advice to create a solution that meets my specific needs. This setup enables me to work from home with lower energy bills and added protection during power outages.
Installation was done by high qualified professionals done in time quick and tidy without any hassle.

Reply from Stellarenergy
I had a fantastic experience with Stellar Energy from start to finish. Their team was incredibly knowledgeable and guided me through each step of the process with patience and expertise. They provided a clear breakdown of costs and potential savings, which helped me feel confident in making the investment.
Installation was smooth and professional, with the team arriving on time and leaving the site spotless. The system itself has performed beyond my expectations, significantly lowering my energy bills while contributing to a greener environment. The quality of the equipment and attention to detail truly show Stellar Energy’s commitment to excellence.
If you're looking for a trustworthy company that prioritizes both customer service and quality results, I highly recommend Stellar Energy!

Reply from Stellarenergy
Please research other companies particularly if you are vulnerable-with your health - the process took 5 months instead of the promised 3 weeks - stellar energy have apologised and blamed staff change, however i wish i had known it would take so long i would have chosen a different provider- the work when finally complete is of good quality - stellar energy have asked me to consider more than 2 stars below - sorry stellar but i used 5 days annual leave waiting for intallers that never turned up when head office said they would - and had to live in a dusty house and bedroom waiting weeks for work to be done - it was left unsafe for my disabled hubby too so i think 2 stars are justified-

Reply from Stellarenergy
The service was prompt and precise. The site inspection and pre-work were thorough. The panels were installed with care but quickly, and the indoor setup was done meticulously and professionally. Everything worked right away, and the system was explained in a way that was easy to understand. Overall, I recommend the company and their product.

Reply from Stellarenergy
They arrived right on time, and everyone I spoke with was friendly, polite, and efficient. They installed a clean and tidy 5-panel, 1kWh system and finished before lunchtime. Very professional work, and I’m happy to recommend them!

Reply from Stellarenergy
From my first meeting with the salesman to the team that installed the panels and the electricians who handled the final wiring, I dealt with five polite and professional individuals. The work was completed, and everything was left clean and tidy. A truly professional team from a professional company!

Reply from Stellarenergy
The team that installed my solar panels was quiet, efficient, and didn’t disrupt anything. After drilling, they left no mess, and all the equipment was well placed without the need for any visible cable covers. This is the second house where I've had Stellar Energy install a system. I was very happy with the first one, so I went back to them for the second. Great company with excellent products and service!

Reply from Stellarenergy
The team showed up early and worked a long day with minimal disruption. Ali was very helpful, answering all my questions and giving useful tips on using the solar PV system. George, who did the survey, was also very thorough and supportive. I’m really glad I chose Stellar Energy!

Reply from Stellarenergy
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