Stellarenergy Reviews 228

TrustScore 4.5 out of 5

4.4

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Review summary

Created with AI, based on recent reviews

Considering 38 reviews, reviewers overwhelmingly had a great experience with this company. Customers consistently praise the excellent service and the helpful, professional staff. Many people highlight the seamless process and efficient user experience, noting that the teams worked fast and were respectful. Reviewers also appreciate the clear explanations and prompt updates provided throughout their interactions. However, some people were dissatisfied with the customer service and response times, mentioning instances of being ignored after initial contact and receiving delayed or templated communications. These customers reported frustration with not receiving timely updates or clear explanations regarding their grant applications, leading to wasted time and a lack of clarity.

What people talk about most

Service

Reviewers mention positive feedback about service, highlighting the professionalism and efficiency of the... See more

Staff

Clients share positive opinions on staff. Customers consistently praise the politeness, efficiency, and... See more

Customer service

Users describe ambiguous interactions with customer service. While some customers, like those who dealt with... See more

Response time

Customers had ambiguous experiences with response times. Some reviewers praised quick responses, with agents... See more

User experience

Reviewers highlight positive aspects of user experience. Customers consistently report a smooth and seamless... See more

Reviews shaping this summary

Rated 5 out of 5 stars

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

Company replied

Rated 5 out of 5 stars

The loft insulation was handled by Dewey and his team, who were polite, efficient, and respectful of the house. They explained what they were doing and cleaned up afterwards. The home feels warmer alr... See more

Company replied


Company details

  1. Heating service
  2. Insulation contractor

Written by the company

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.


Contact info

4.4

Excellent

TrustScore 4.5 out of 5

228 reviews

5-star
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1-star

Replied to 75% of negative reviews

Typically replies within 24 hours

How this company uses Trustpilot

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Rated 5 out of 5 stars

Great Place To Deal With.

No problems whatsoever absolutely brilliant team. Got the job done quick all contractors they used were fast, efficient and polite , can fault them
Thank you so much.

7 November 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Thanks for the nice review it means a lot

Rated 5 out of 5 stars

Really friendly team to deal with

Really friendly team to deal with, with efficient service throughout, no fuss and got the job done. I've already recommended to 2 friends!

4 October 2021
Unprompted review
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Reply from Stellarenergy

That means such a lot. Many thanks

Rated 5 out of 5 stars

Friendly, efficient service

I contacted this company for Cavity wall insulation & loft insulation which was completed recently.
I am very pleased with the work carried out and would be happy to refer to friends and family.

Everyone I dealt with was polite, efficient and on time - which is rare for tradesman these days!!

4 October 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Wonderful many thanks

Rated 5 out of 5 stars

Great service.

From start to finish the service from Stellar energy was seamless and faultless . I given their number by a friend . Called them up, got a grant for loft Insulation and first time central heating. Both were done within a month of contact and for totally free. They were a bit late to my property so they gave me a 100 quid voucher for MS. I didnt require that but a nice touch . All the work was carried out in a professional manner. I was lucky that I qualified through my benefits . The process was very smooth.. many thanks ..

4 October 2021
Unprompted review
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Reply from Stellarenergy

Nice words. The truth speaks for itself

Rated 4 out of 5 stars

Overall happy

The whole process took longer than expected, loft insulation happened in January and we were happy with the work carried out, heating was finally installed in September and so far so good.

4 October 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Many thanks

Rated 1 out of 5 stars

It is almost two years since I filled… in reply to Stella Energy. A survey had been done for storage heaters approx 18 months ago so don’t know another survey has to be done.

It is almost two years since I filled in forms etc regarding loft insulation and storage heaters. The loft insulation was done 16 months ago. After many phone calls and promises from Stella Energy about the installation of new storage heaters I am still waiting. Last January when I spoke to Steve he told me they would be installed in the next few weeks. I have a copy of this on an email.
They always promise to ring back but don’t. I spoke to Ashley about a month ago and he said that the forms hadn’t been passed on to the installers and the grant had passed the time limit last October??? I would not recommend this company to anyone. Yesterday I spoke again to Steve (as Ashley is on holiday) and he said he’d ring me back AGAIN. I’m still Waiting.
The only good point for this company is that they are good promisers but nothing comes of it.

1 October 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Dear Jennifer
Our work is all subject to a surveyor coming to the property and assessing what can and can’t be done under the scheme rules. Ashley has a list of people to get back to and he will come to you. Await a call this coming week.
Many thanks

Rated 5 out of 5 stars

Very good work done to a very high…

Very good work done to a very high level. We had loft insulation installed as well as ridged plastered loft insulation installed in our dormer loft room which was plastered. All the work was completed in two and a half days to a very high standard. We are very pleased with the outcome and would highly recommended Stellar Uk Ltd.

29 August 2021
Unprompted review
Rated 5 out of 5 stars

Excellent service

Cavity wall insulation, loft insulation and new boiler completed recently. I am very pleased with the organisation and the workmanship.
Everyone I dealt with was polite and efficient.

20 July 2021
Unprompted review
Rated 1 out of 5 stars

Incompetent and rude.

I can honestly say I have never met such incompetence. Started off relatively well, survey done, then I was ‘forgotten about’. Loft insulation completed 4 months on but when it came down to the actual electrical work, I have been thoroughly messed around and fobbed off. I must have phoned 20+ times and I always get told ‘someone will call you back, and they don’t. AVOID.

15 July 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Hi Miss Davies
Can you please email customercare@stellarenergy.org please today, as I can’t locate you on our system as there are too many K Davies’s. We will get things sorted for you right away.
Regards
Simon
Stellar Energy UK
Update:
No one has contacted us to resolve the complaint. We will now cancel this off our system as per company policy

Rated 1 out of 5 stars

Initially the company were great

Initially the company were great, had a surveyor out within a week, loft insulation done 1 week later then nothing, after trying to call email and getting nowhere I put a review on here, then next say had a call to say if I take off the bad reviews they would send out a plumber, they also advised as I had already had cavity wall insulation I could no longer have the boiler free, I advised them that when I spoke to someone on the first call I advised I already had cavity wall insulation 12 years ago, they advised I would definitely get a free boiler, the plumber arrived 5 days later that was 2 months ago and no call again so after starting my enquiry in March I have given up.

Thank you for your reply, when I made the first call to you in March I explained that I had already had cavity wall insulation in my property, the reason I asked was because other companies I had called had told me I needed to have the cavity wall installed with them to be able to have a free boiler, you advised me because I was having loft installation I would be able to have a free boiler even though I already had cavity wall installed, can I also ask why you’re coming back to me through trust pilot but never reply to calls I have made.

29 June 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Hi Emma
In order to get a free boiler, we told you that the cavity walls had to be insulated. The walls were already insulated when we did a survey at the property. We can however offer a 50% funded boiler without doing the cavity walls. The scheme stipulates the above rules that we have to abide by. Would you like a quote for a partially funded boiler?
Thanks
Stellar Energy
UPDATE: if we try to call back and get no answer then we leave response on here to let everyone know that we are a good company. We don’t shy away from any responses.

Rated 4 out of 5 stars

Great company

Great company - efficient pleasant guys who arrived on time , put insulation in my roof and ...........
cleared up after with a hoover!!
Thank you guys.

16 June 2021
Unprompted review
Rated 5 out of 5 stars

Loft insulation fitted by Dewey & Jordan- excellent service!

Dewey and Jordan arrived to fit loft insulation. Arrived before time and were very courteous and professional. They provided a full explanation of the work to be undertaken and once finished, and supplied an advice sheet also prior to leaving. From initial assessment, to the inspector George (who was so lovely), the loft insulation has been fitted within 7 days which is excellent. After being messed around and let down by so many other companies, we cannot fault these guys! Thank you!

16 June 2021
Unprompted review
Rated 5 out of 5 stars

I had arranged for a boiler and heating…

I had arranged for a boiler and heating grant for my grandfather, he’s been without gas for just under 6 years.. the workers and the company did an amazing job and was very easy to work with. They was a massive help in boosting my grandfathers mental health and understood the difficulties of the home. I would highly recommend. Thank you to the stellar energy team.! We are so great full for everything you have done.

4 June 2021
Unprompted review
Rated 5 out of 5 stars

Very professional job all round

Initial survey was professional and well explained. The two guys who came to fit extra insulation (Scott and Nicky) and lift lift boards etc today were great. Very professional, friendly, worked non stop and very clean and tidy. Explained things throughout... Excellent...!!

28 May 2021
Unprompted review
Rated 5 out of 5 stars

Satisfied with loft isulation

The guys arrived on time, friendly and professional service, cleaned up after themselves, I would recommend their work.

20 May 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Many thanks and glad to be of your service.

Rated 5 out of 5 stars

Thanks to Nicky & the team

Great job installing additional loft insulation. Really efficient workers and they cleaned up once finished.

20 May 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Thanks for the great review

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