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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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
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
54 Stepney Street, SA15 3TG, United Kingdom
- 01554 788766
- customercare@stellarenergy.org
- stellarenergy.org
4.4
Excellent
228 reviews
Replied to 75% of negative reviews
Typically replies within 24 hours
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See how their reviews and ratings are sourced, scored, and moderated.
Amazing from beginning to end
Amazing from beginning to end. Amy was fantastic, always available to answer my questions, even texting when busy. The three-man installation team was professional, knowledgeable, and polite. I only wish I had done it sooner! Five stars from me!
15 July 2024
Reply from Stellarenergy
We’re thrilled that you’re pleased with the service and products Stellar provides. Your satisfaction is important to us. If you share your experience with neighbors who could benefit, we offer a £500 referral fee for each new client you refer who completes a successful grant installation. Thank you for your trust and support!
I wanted to share my experience with…
I wanted to share my experience with the excellent customer service I've received from Stellar Energy over the past few months. Specifically, I'd like to thank Ryan, who has been incredibly kind and helpful every step of the way. When things go wrong, it can be tough, but having a dedicated person like Ryan to handle things makes it so much better. Thanks, Ryan!
4 July 2024
Reply from Stellarenergy
We’re thrilled that you’re pleased with the service and products Stellar provides. Your satisfaction is important to us. If you share your experience with neighbors who could benefit, we offer a £500 referral fee for each new client you refer who completes a successful grant installation. Thank you for your trust and support!
We had a problem with our boiler…
We had a problem with our boiler recently, and I have to say, they responded quickly and sent an engineer to fix it. The engineer, Dewey, diagnosed the problem and took the time to explain it to me. He was friendly and professional, and we're so grateful to have hot water again! I can't recommend this company enough.
13 July 2024
Reply from Stellarenergy
We’re thrilled that you’re pleased with the service and products Stellar provides. Your satisfaction is important to us. If you share your experience with neighbors who could benefit, we offer a £500 referral fee for each new client you refer who completes a successful grant installation. Thank you for your trust and support!
We received excellent customer service…
We received excellent customer service from start to finish, from discussing the design and making adjustments to installation. The scaffold team and panel installers were great, and the electrician was equally impressive, very neat and tidy. Overall, it was an excellent experience.
12 July 2024
Reply from Stellarenergy
We’re thrilled that you’re pleased with the service and products Stellar provides. Your satisfaction is important to us. If you share your experience with neighbors who could benefit, we offer a £500 referral fee for each new client you refer who completes a successful grant installation. Thank you for your trust and support!
Absolutely outstanding service and…
Absolutely outstanding service and we're very happy with the results - already reaping the benefits. Dylan and his team went above and beyond to ensure everything went smoothly, and they were always ready to help with anything we needed. And to top it off, the price was fair! We can't praise them highly enough and we're already recommending them to everyone we know.
12 July 2024
Unprompted review
Reply from Stellarenergy
We’re thrilled that you’re pleased with the service and products Stellar provides. Your satisfaction is important to us. If you share your experience with neighbors who could benefit, we offer a £500 referral fee for each new client you refer who completes a successful grant installation. Thank you for your trust and support!
The whole process was easy from start…
The whole process was easy from start to finish. choosing Stellar Energy will save you money and give you peace of mind knowing you're working with a professional solar provider.
5 July 2024
Unprompted review
Reply from Stellarenergy
We’re absolutely delighted to hear that you’re pleased with the service and products Stellar provides. Your satisfaction is our top priority, and it’s incredibly rewarding to know that we’ve met your expectations. If you think your neighbors might benefit from our services, we would greatly appreciate you sharing your positive experience with them. To show our gratitude, we offer a £500 referral fee for every new client you refer who is accepted and successfully completes their grant installation. Thank you for placing your trust in us and for your continued support—we truly value your partnership with Stellar!
The company kept us updated throughout…
The company kept us updated throughout the process. The on-site work was done on time and efficiently. They provided good backup advice, and we're really pleased with the results.
2 July 2024
Unprompted review
Reply from Stellarenergy
We’re absolutely delighted to hear that you’re pleased with the service and products Stellar provides. Your satisfaction is our top priority, and it’s incredibly rewarding to know that we’ve met your expectations. If you think your neighbors might benefit from our services, we would greatly appreciate you sharing your positive experience with them. To show our gratitude, we offer a £500 referral fee for every new client you refer who is accepted and successfully completes their grant installation. Thank you for placing your trust in us and for your continued support—we truly value your partnership with Stellar!
Stellar Energy provided everything I…
Stellar Energy provided everything I needed, including the air source heat pump, cylinder, and installer pack. The quality, delivery, and appearance of the items were excellent. And best of all, they work amazingly well!
1 July 2024
Unprompted review
Reply from Stellarenergy
We’re absolutely delighted to hear that you’re pleased with the service and products Stellar provides. Your satisfaction is our top priority, and it’s incredibly rewarding to know that we’ve met your expectations. If you think your neighbors might benefit from our services, we would greatly appreciate you sharing your positive experience with them. To show our gratitude, we offer a £500 referral fee for every new client you refer who is accepted and successfully completes their grant installation. Thank you for placing your trust in us and for your continued support—we truly value your partnership with Stellar!
Stellar energy appoints Heatforce as…
Stellar energy appoints Heatforce as their heating installers. Unfortunately, the advert on their van about being professional, did not reflect in the job carried out at my property. My heating did not work properly, almost from the next day the job finished. It took 4 months and one week to determine the ongoing fault. Few weeks later, it went wrong again. I asked for compensation. They offered me one year free servicing. I said it was not enough. So Heatforce sent me an itemised cost of the work they did to find the fault, and tells me. This is what we have done for you. It is easy for someone to put a good remark, but if like me. It is negative, then one must have facts to speak out. Stella energy has compensated me for bad workmanship, and I accepted. However, I have on many occasions spoke to Stellar energy about my problems with Heatforce, but they only spoke with them to say. It was unacceptable. However, Stellar energy, work with Heatforce. So, if your looking for an ECO company, and going by my experience. One can do better.
5 January 2024
Unprompted review
Reply from Stellarenergy
Mr Dervish, we are very surprised to see this reviews after all the time and effort, phone calls, some money to you for good will. Here is the “dated and timelined” responses along with the letter given to you.
Please see below report we have received in relation to your complaint.
Looking at the below report, the trend appears to be a user error. Mr Dervish was not using the controls correctly. I can appreciate the debris in the system, and we returned with Ideal to rectify the issues.We have already moved/changed radiators as a goodwill gesture – I believe this along with a free annual service would be a fair offer.
Original installers josh clarke /jake
Install date 5/1/2024
Had first complaint on the Saturday 6th Jan stating he wasn’t happy with the sizes and positioning of some of the radiators .
Spoke with josh and Jake regarding this and they stated that all rads were all in place and piped up when he then complained about the positioning , at the end of every workday the boys asked Mr Deverish if he was happy and did not raise any issues .
Mr Deverish then raised issues with damaged floorboards and unsightly pipework in bathroom .
Again, we went back to josh and Jake who stated that the original floorboards were badly rotten, and Mr Deverish said he would replace and not worth screwing back down .
I attended the property on the 8th of Jan to go over the issues highlighted by Mr Deverish
All the above issues were raised by Mr Deverish and as he said he had been through a lot of stress during the whole process of the IWI and heating installation we agreed as a gesture of good will to re sight the radiator in the dining room from existing position to under window and to swap the radiator in the bathroom for the one in the bedroom to allow better access around his bathroom basin and to also re pipe the “unsightly” pipework in bathroom .
17/1/24 Rob and Andrew were sent to carry out the remedial work which included repositioning the radiators as per above , the altering of the unsightly pipework and lagging of the condensate pipe on ashp.
1/2/24 – fault with wireless thermostats connecting which electricians attended to rectify and also joe Thompson attended to check flow error issues. Joey reported that filter was blocked so cleaned filter and tested and everything was working ok
8/2/24- Joey re attended to fit new dial on the cylinder and to fit x2 new trunkings on radiator drops .
19/3/24- Job raised for Joe to show Mr Deverish how to use system as he was not using controls correctly and turning power off to the unit which was causing issues with the connectivity of the room thermostat
27/3/24- Flow error on system
8/4/2024- Joe romanick attended again and advised that he reset system and worked fine first time , he also reported that he believed that Mr Deverish was tampering with the system and still turning off at the mains
17/4/24- appointment made to check another fault with system whilst I was on route to property Mr Deverish called to cancel appointment stating system was all working fine .
22/4/204 – I attended site to check another fault on flow error and to arrange video call with ideal .
Outcome from visit was that ideal stated that flow error may be down to pipework installation and the number of bends and height changes is causing air locks and will need addressing .
30/4/2024- Jake attended to alter and increase pipework from unit to the cylinder ,after works completed we were still having flow issues which at first ideal were refusing to attend but then agreed to call and check flow sensor and unit for possible unit /cylinder fault.
1/5/24- ideal attended site with Henry Boddy , ideal were happy with the pipework size but did raise concerns with debris found inside pump /unit /flow sensor and recommended that we arrange for unit to be powerflushed to ensure any debris in the plate heat exchanger can be removed .
13/5/24- Huw Griffiths attended again to check that all was OK.
ABSOLUTE SHAMBLES
ABSOLUTE SHAMBLES - SCAM- AVOID. The experience I have had with this company is beyond words, they are a complete shambles , a disgrace and have scammed me into thinking I had been approved for Ecxo flex funding for the past 9 months, it is literally disgusting they way that they have mistreated me. they have strung me along with complete deceit and lies since October 2023. November - Booked Survey , nobody showed up , no email call nothing. January – rescheduled survey, received a call from Ashley after advising new boiler and loft & wall insulation will be installed in 2 weeks. Weeks go by not heard anything chased up, alarmingly I was advised im not entitled to anything and survey was wrong. Then I was promised a free boiler due to the errors provided but advised to remove the bad review, which i did. Few weeks later I chased Ashley but again ignored, I spoke to Simon the director he told me yet again I had been misinformed and I’m not having a free boiler and I had to wait for funding. April 30th - Simon text me " Great News and that they have received funding, May chased again to be told still waiting, I therefore spoke to RCT council and was advised there is no such application and they are not improved installers of this scheme. I confronted simon and he said he would use a 3rd party for funding instead. Absolute joke. June boiler has broken down i have no hot water , they offered to repair until funding received, 4 appointments later still not working, faulty parts, wrong parts, etc and awaiting new parts. 28th June spoke to RCT council again, and yet AGAIN shockingly advised no application has been received by Stellar or a third party absolutely disgusting behaviour. Many messages have been sent to Simon, I've explained I have 2 young girls here with no hot water, all ignored now blocked. RCT advised to go to Ofgem, Ombudsmen, I will also seek legal advice for distress and inconvenience to myself and my children. Thank god it Is not winter we would all have pneumonia. I advise anyone thinking of using this company to use other alternatives, I have been truly let down and feel like I have been totally scammed. The whole experience has been extremely stressful for myself and my children, This is just pure greed, rather than lose a sale they would chance being approved with RCT council, or use someone else rather than me find locally which no doubt would have been completed by now. I since have had to move out of the property until something is sorted , I am outraged to say the least. BEWARE DESPICABLE COMPANY !!!
1 July 2024
Unprompted review
Reply from Stellarenergy
Mr McManus is correct about Stellar not giving him a new boiler, but we did fix his boiler that was broken down. We did this in complete good faith. We used no grant money to claim any funding but did the work for free as a good gesture. Stellar are not a known installer in the Rhondda local authority but are with many others, so we have applied to be on their list. To onboard with some councils takes longer than others. We told Mr McManus this and it just wasn’t good enough. So, in the meantime we paid for parts and labour to fix his boiler. Mr McManus has been very very rude to all our staff and his language is just awful. A member of staff was turned to tears last week with swearing and abuse on the phone. Due to this behaviour, we will not be dealing with Mr McManus any longer. We have kept him in the loop all the way through the process but nothing is ever any good for him. There are always 2 sides to every story and as you can see by the other reviews on this platform, we have very happy customers 9/10.
Update:
intimidating staff members and messages with swear words on. It’s a form of harassment. Please do not abuse Stellar staff any longer or we will be making a police complaint for harassment
Internal insulation installed
We have had internal insulation installed and our experience has been excellent. The installation team from Griff’s Plastering did a fantastic and professional job very quickly. They explained the installation process and were friendly and helpful and thoroughly cleaned up afterwards.
20 June 2024
Unprompted review
Reply from Stellarenergy
That’s so much! The guys work so hard
Waste of time
My Dad was surveyed on 3rd April but then heard nothing. He phoned on the 16th and was told that essentially there not enough in it for them to do the work so told to approach my Local Authority. Never had the courtesy to let me know this though. A total waste of time & space in my opinion.
3 April 2024
Unprompted review
Reply from Stellarenergy
Update 19.4.24 - please send us your phone number so we can sort this.
Hi Nikki - there was no Nikki surveyed on 3rd April unfortunately. We have requested more information from you. Send that to us and then we can help you further. All of the surveys we do get feedback within 7 days. That’s why our reviews are excellent
I would definitely recommend this company.
My grant work has been completed and my previously cold old home is now comfortably warm and cosy. I was unsure about how much I would benefit from an air source heat pump as I had heard that they were less effective in an old property. Don't believe it! The insulation work done by Stellar before the new heating was installed has made a big difference, and the solar panels on my roof generate power even on dull days, which offsets the bills too. All told, I'm much warmer and my bills have gone down. Total win-win!
All the various people who came from Stellar Energy and their contractors were super helpful and friendly.
I couldn't be happier.
23 February 2024
Unprompted review
Reply from Stellarenergy
Amazing review many thanks Jill
No reply 6 months after survey
We had our survey carried out in August 2023. I was told someone called Ryan would follow up with us about next steps.
After calling multiple times in September I received a call in October explaining we would need to contribute to the measures, which I was happy to do and asked to have this information over email. He said he would do so in 48 hours and I have not received this email.
Called again multiple times November-December, always told someone will call back but they did not. The woman who picks up the phone when you call is incredibly lovely, helpful and was always very apologetic.
I had a look at these reviews and saw the company replies with a custom service email address so I emailed them in November but again received no response.
4 March 2024
Unprompted review
Reply from Stellarenergy
Hi there - we’ve just had a look through emails from back then and in the junk folder and don’t see any not replied too. Can you email customercare@stellarenergy.org or ashley@stellarenergy.org today please and we will get right back to you. You can phone us on 01554 788766 option 1. What’s your full name please? We can install the FREE energy improvements for you right away! We are actively doing this on a daily basis. PLEASE get in touch today.
Excellent service
Excellent polite, helpful and efficient staff. Really high standard of work. Can't speak highly enough and I would recommend them to a friend.
29 February 2024
Unprompted review
Reply from Stellarenergy
Thanks ever so much. Stellar really does work hard to see these kind of remarks on our review pages. Means a lot thanks
Why do you block people on face book…
Why do you block people on face book for telling you the truth there was no bad language or insulting any one just saying it as it is don't like the truth by looks of it go on remove my review now and block me like you have on face book joke u are
22 December 2023
Unprompted review
Reply from Stellarenergy
Good morning Mr Parham. Sir, no one he blocked you on Facebook and there is no reason too. You are not a client of ours now or in the past. Isn’t that correct.
No reply off Mr Parham.
Mr Parham isn’t a client of ours. This must be a fake review as these happen online quite a lot.
Brilliant job Andrew turned up everyday…
Brilliant job Andrew turned up everyday worked all hours to get the job done.
15 December 2023
Unprompted review
Reply from Stellarenergy
Thanks for the true and amazing review
Verypleased Appreciated being kept informed of…
Appreciated being kept informed by Andrew of times of arrival etc. Worked hard while here . Listened to any of our concerns and sorted out any problems. Always polite and considerate no bad language. Dylan and crew also very polite .good communication and time keeping. Very professional
27 November 2023
Unprompted review
Reply from Stellarenergy
Thanks for the true and amazing review
Friendly, professional, hard working and quick
The company has done a very good job of upgrading my loft insulation and cavity wall insulation and retrofitting trickle vents and extraction fans. The teams are all efficient, friendly, hard-working and explain clearly what they are going to do and why. When there was an unexpected issue with excess insulation dust getting blown around my loft, Ken and Dan drove all the way from Wales (I’m near Oxford) at 6.30am on Saturday morning to sort it out. All done with a smile and a lovely Welsh accent. 😄
2 December 2023
Unprompted review
Reply from Stellarenergy
Thanks for the true and amazing review
The boys were very professional
The boys were very professional, today and very efficient with the work i would highly recommend Stellar Energy to anybody
24 November 2023
Unprompted review
Reply from Stellarenergy
Thanks for the true and amazing review
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