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

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Replied to 75% of negative reviews

Typically replies within 24 hours

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Rated 5 out of 5 stars

14/5/21

14/5/21 , AM :Marloes, Pembs
really excellent service from Jordan and Davey .They were very efficient and very helpful
Thankyou .

Ruth

14 May 2021
Unprompted review
Rated 5 out of 5 stars

Jorden and Dewey are a great team

Jorden and Dewey are a great team. they did an excellent job with the laying of additional insulation in my loft yesterday. They were due to arrive at 3pm but with stocking in traffic they came at 4 pm.they phoned me and let me know before 3 pm. Job was done and dusted very quick and clean. Thanks guys, job well done.

5 May 2021
Unprompted review
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Reply from Stellarenergy

Appreciate the excellent review

Rated 5 out of 5 stars

Jordan and Dewi did a great job of…

Jordan and Dewi did a great job of insulating our loft. They dealt with a difficult strip out of old insulation and did a very professional fit of the new material. Very clean, polite and friendly. Highly recommended.

5 May 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Thanks

Rated 5 out of 5 stars

Great service

The whole process was quick and ran smoothly and I was booked in very quickly once the survey was confirmed. Jordan and Dewi did an excellent job removing the old and installing new loft insulation. They were both very polite, helpful and knowledgeable. Thanks very much.

4 May 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Thanks very much.

Rated 5 out of 5 stars

Ha stellarenergy install gas central…

Ha stellarenergy install gas central heating .absolutely excellent service throughout .would reccomend them to anybody .

29 April 2021
Unprompted review
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Reply from Stellarenergy

Thanks Mr Davison. We installed the loft, cavity and full heating system for them. They had old electric panel heaters and a brand new mains gas boiler and radiators throughout. We also fitted a Hive smart programer so Mr Davison can control the heat from anywhere. Another happy customer that didn’t pay a penny
Keep up the good work team

Rated 5 out of 5 stars

stella energy employees

i have just had my loft insulated by the two most amazing people i have ever had the pleasure to meet,they did a brilliant job and also gave some fantastic advice,i would like to thank jordan and dewi so much ,both for thier proffesionalism and politness,many thanks,

28 April 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Thanks very much for the nice words

Rated 5 out of 5 stars

Nicky and his team did an excellent job…

Nicky and his team did an excellent job with the laying of additional insulation in my loft today. They were due to arrive tomorrow but with having a cancellation in their listings for today, they telephoned me at 11am to ask if it was convenient for them to come a day early. This was fine with me and they arrived as agreed, at 12 noon, and the job was done and dusted, spick and span by 1pm. Thanks guys, job well done.

28 April 2021
Unprompted review
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Reply from Stellarenergy

Thanks again

Rated 5 out of 5 stars

wonderful job…

Nicky & Scott have done a wonderful job in upgrading the insulation. They arrived on time, worked quickly and cleanly and kept me informed of my options. They were knowledgeable about the benefits and best way to allow correct airflow and storage. Thanks!

20 April 2021
Unprompted review
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Reply from Stellarenergy

Thanks very much indeed

Rated 1 out of 5 stars

Complete failure to meet the companies own Mission Statement..

I was working on behalf of my mother to access a replacement boiler. The initial contact with the company was reasonably efficient. I spoke to Ashley who took some details including my summary of the situation which were that in my view the loft had sufficient insulation, the cavity walls had no insulation and critically the oil fired boiler needed replacing. I was told that my mother would qualify for support and full funding given that she was in receipt of attendance allowance but that this would have to be verified. As it was likely that the boiler would be costly to replace and potentially very disruptive I asked to speak to an engineer with a view to scoping out what would be needed. Ken, the engineer was not available but I was told that he would call me. This never occurred. A number of days passed and I heard nothing so I followed up by calling and I spoke to two Steve's. I was told that my mothers eligibility had been verified and to move things along and to follow procedure an appointment from a surveyor was made and this took place on 23/03/21. I took the day off work to facilitate this. The surveyor suggested that I would likely hear back in a few days as the certification to verify that the loft insulation and cavity wall status was as his report indicated and would take a few days to be checked.
Again time drifted by and I again called the office and spoke to Steve who suggested that they were still waiting for the certification status but that it was due shortly. A week later I again called the office and spoke to Dan who suggested that he was in charge of the cavity wall insulation department. Apparently my mother was eligible for this and he wanted to book a date. I suggested that the job was not to be viewed in isolation as it was the boiler that was the most urgent and I viewed the project as a whole. I would need to speak to Ryan reference the loft insulation as that was his department. I had a long call with Ryan who then told me that the loft had sufficient insulation and that the cost of installing a boiler was too great and there was insufficient funding without a contribution from my mother. I suggested that the visit from the surveyor had been pointless as I had already supplied the relevant information and that an assessment regarding likely eligibility could have been made on this basis with any facts being verified at a later date. I think it likely that Stella Energy have claimed funding for this visit and it was certainly of no benefit to my mother and cost me a days lost earnings.
Ryan gave me his direct contact details and we agreed that he would supply me with the full transparent technical specifications and costings, with the contribution from my mother that would be needed to replace the boiler. I have again followed up with emails and telephone calls with no reply.
At best the methodology of Stella Energy is flawed. Why are clients left to take the initiative and emails not answered (see other feedback on Trustpilot). There is no customer service. The suggestion made in all telephone calls that they are being recorded for training purposes is not being followed through.
It is suggested by the company that "Our mission is to help you access these grants with no fuss and to guide you through the process with ease; clearly explained and totally transparent".

Thank you for your reply to this email (below). We now seem to be working on a number of platforms. Trustpilot, Google Review and direct email.

Hello Mr Mathias,

Thank you for your prompt response to my Google Review.

In my opinion you have sufficient information, to carry out and review of how my contact with Stella Energy have handled my claim on behalf of my mother. Many of my telephone calls have been recorded, my emails are on record. I have outlined my case to the best of my knowledge/memory and I have corrected any errors where these are evidenced. My assessment is a honest as it reasonable can be with the information available to me. I have already spent considerable wasted time on this issue and it seems unreasonable for you to request further information at this stage.

Please supply me with the Customer Complains Process and copies of the recorded telephone calls. I look forward to your conclusions

Best wishes,

Ron Skinner

Your reply fails to supply the Customer Complaints Policy or copies of the recorded telephone calls as requested and implied in your reply. I had already acknowledged in my review that Dan had told me my mother was eligible for the cavity wall insulation. Ryan was requested to supply financial details of the value of this so that I could update my mother. As recorded in my review he was also requested to supply me with the details you are now offering me (technical details of the boiler, costs and financial contribution from my mother). He did neither of these.

16 April 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Dear Mr Skinner
We can not do oil boilers under ECO3 for free. We can however do the cavity wall insulation and we have informed you of this on numerous phone calls that are recorded. The way the funding works is as follows - The scheme, regulated by OFGEM, gives us a scoring tool that then equates to ££ money. Oil boilers have very little funding and scoring under this tool we are given. We can not control this scoring tool and therefore can not fit oil boilers for FREE. You have been told this by our staff. Our processes are pretty robust here and to slander us in such a way is not called for. If you want an oil boiler 50% funded (that's what we are given) then we can arrange for this to be done. We have offered you FREE cavity wall insulation and have not asked you for any money and would never do this unless pre authorised by you and your Mother. If you would like us to look into  the partial grant for oil boilers please email me back. Then it's all in writing. I hope this is a sufficient reply for you. 

Rated 5 out of 5 stars

Had my loft installation updated…

My friend Mrs Galvin & myself Mrs Pike Had our loft installation updated installed in January, there were 2 men & a girl all wore the masks. Good service very quick arrived close to expected time they cleaned up after themselves. Well done.

15 April 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Thanks very much

Rated 5 out of 5 stars

Insulation

Had full loft install in both of my lofts had Jordan and Dewely both guys polite and proffesional also very tidy after they left

6 April 2021
Unprompted review
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Reply from Stellarenergy

Another happy customer. Thank you very much

Rated 1 out of 5 stars

Awful Experience – Electric Bill went up from £ 58 per month to over £ 150 per month !!

30/4/21 - another update !
As you are well aware, the loft insulation job carried out in Sept 20 was failed by the independent surveyor as there was a section totally uninsulated above my bathroom ceiling, plus the rest of the loft was the wrong height. It took until Feb 21 for your men to come back despite me chasing continuously. I have sent you photos of the ceiling showing the paint bubbling and simply asked you to send me pictures of that section that your surveyor took before the work was out so I could determine if the uninsulated section was already there or has been caused by your installers. I couldn't open the attachment you sent me.
Not sure why you're still trying to 'defend' yourself so publicly. Its clear that i'm not the 1st person to have had a bad experience with your company.

21/4/21 Update to reply 21/4. Not sure where all your other replies have gone but thankfully i have screen shots of them all :) As you well know, when I rang the manufacturers they simply confirmed as I expected that the heaters fitted were nowhere near capable of heating the size of the areas in question, you only have to put the room measurements into their website calculator to see that. I have reported everything to NAPIT although I have just looked at your website and see you are no longer claiming to be a member, were you ever a member ??.... Honestly the way you conduct your business leaves a lot to be desired. You claim to use 'trusted installers' yet the ones you use are totally unreliable, unprofessional and then go into liquidation, you appear not to have any formal complaints procedure, you fail to provide any paperwork to your customers to show the work has been completed, and openly admit that you believe it is acceptable to take £ 4,200.00 of the £ 6,000.00 grant allocated to a property as your own companies earnings stating that 'you are not a charity'. No, there is certainly nothing charitable about Stellar Energy.

11/4/21 Update to reply below:
You have seen from the bills I have sent you covering 5 months that the majority of the increase is in the Economy 7 part of my bill which only supplies the storage heaters, so as you well know, it is not a case of simply using more electricity... The increase on the day rate is due to having to use the expensive plug in panel radiators as I have no heat upstairs.
I am totally shocked that you state the grant received was in excess of £ 6,000. I received 2 x £750 storage heaters, 2 x £ 100 (max) panel radiators and at the very most £ 100.00 worth of loft insulation. So are you admitting that the balance of £4,200.00 is taken in commissions and labour ??!!?? Disgraceful....
While I have your attention can you please forward to me as soon as possible a receipt/contract for the works carried out as without those the insurance documents I have are invalid.

Original Review
Website totally misleading, take their promises of lower bills and a warmer home with a pinch of salt. Stellar are not heater installers and the pictures on their website are not the heaters you will get. Stellar just act as a middle man to get the commission from the government ECO scheme then sub the work out to other companies.
The survey they do is a waste of time as the amount of heaters you get is based on a financial decision rather than what your home needs to heat it adequately. I was ‘entitled to’ 2 heaters to replace the 5 old storage heaters I had but they assured me that it would be more than enough to heat my home. I’m now paying £ 150 per month (was £ 58) and my house is still cold. All I have for heat upstairs are 2 plug in electric radiators that they fitted which are expensive to run.
The ‘company’ they sent round, BBD Contractors, were a total joke, continually didn’t turn up for appointments (6 times !!) never returned phone calls/text messages, refused to wear PPE in my home, totally unprofessional. They now seem to have gone into liquidation, but will no doubt start up again under a new name in order to rip more customers off.
Stellar do install the loft insulation but that’s a joke as well. 3 men in my loft for over 3 hours, took no more than 2 rolls of insulation up there and according to the insurance document I received, charged the job as over £ 1400.00 ! Job was failed by an independent surveyor as not the required height and a whole section missing over my bathroom ceiling, so I now have black spots and bubbling paint in my bathroom… took over 3 months for them to come back to do it properly although I can't get up there myself so no idea what they've actually done.
Will be reporting my experiences with Ofgem, the Electric Company who fund the scheme and Watchdog as I am sure this is not how the ECO Scheme was intended to work. In the mean time I will be moving as I simply cannot afford to live here and I dread the thought of another freezing, expensive winter here.

6 April 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Dear Ms Johnson
Thanks for the comments it really helps us improve. However, as discussed in the emails back and forth, the manufacturer's website for the highly efficient storage heaters claims that they save you energy. The scheme also recommends these heaters for improving energy efficiency in the property. We have to take their facts and pass these on the to client. You have rang the manufacturer and they told you the same as I have correct? We have had an unusually cold spring and this may be what's causing your bills to go up? My bills are also a lot higher as the children need to keep warm in these colder times. If we can be of any help please email me back with the trails we already have. Kind regards Stellar Energy UK
Update on 29 April:
I have replied to Ms Johnson’s emails requesting photos from the initial survey. The black spots in the shower room are condensation from the steam off the shower. Please open a window and the steam will not condense on the walls causing damp.
The extension above the kitchen does not need insulation as it was built in the 90’s. That was estimated on the survey. Therefore it has insulation there already under previous building regulations. We keep on answering your queries. We are not a RIP OFF company. What money have you parted with? Where is the miss selling?

Rated 5 out of 5 stars

Had our house surveyed last Tuesday for…

Had our house surveyed last Tuesday for help to make our house more eco friendly with the help of government funding. The gentleman had a phone call while he was here to say they had a loft insulation team in our area with a cancellation if I would like it done only 2 days later. I was extremely grateful and jumped at the chance. Come Thursday, communication was excellent, three young lads came in to do the job, were absolutely lovely, did an amazing job very quickly and they even cleaned up after themselves. (I didn’t expect that! ) so very grateful, would definitely recommend!! We can notice the difference already, the house is so much warmer! Thank you very much!

27 March 2021
Unprompted review
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Reply from Stellarenergy

Thanks for the honest review

Rated 1 out of 5 stars

Well this company rang me today we had…

Well this company rang me today we had a conversation and was told that they could help me with insulation was then told that they would ring me back in five to ten minutes to see when someone could come out to do survey and that was the end of the communication! I did ring back after an hour to be told that the person I had been speaking to would ring me presently. I’m still waiting three hours later. Don’t bother I will get it done with a company who keeps their word.

Update :
Well for one i’m a miss not a mr and i’m Burnell not Burrell. We shall see if I get a call in the morning then.

My Name is miss Burnell! I have spoken to two people there today and one of them could of said that there was a family problem and I would of understood. I will not delete my review this is my experience with you.

To date still no contact nevermind will try elsewhere.

There have been no telephone calls as you state and definitely not on the Saturday you say because I was home all day and the phone never rang.
I was in fact told on the phone that I did qualify and was told that a surveyor would come out etc then I had to wait for a telephone call within 20 mins which I never had. I appreciate like I have said before that the gentleman in question had to pick his children up all someone had to say was that when I telephoned back twice. There is no need to continue with this tit for tat I know what was said to me and I will stand by that till the end.
No one has been to my house nor have I signed anything because there has been no further contact from yourselves just on here trying to make a wrong a right and making out its all my fault.

Didnt enquire about a boiler in the first place. Lol dear me

26 March 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Hi Mr Burrell
Apologies for not calling back but the agent that was suppose to had to leave to pick his children up early. I hope you can understand in this day and age that family are everything . However, the agents are back in first thing tomorrow morning. How’s that sound?
Update:
Miss Burrell, you will get a call tomorrow. Leaving a one star review before we have the chance to even speak to you isn’t a great start. Please delete the review and then let’s start as we mean to go on tomorrow. I don’t think we deserve a one star review because an agent had to pick their kids up.
Updated reply 11 Apr 2021 :
We have rang numerous times to try and get in touch. We even rang on a Saturday morning to try and get some contact. Please call us again and we will rectify whatever queries you have. For the record, we have not set foot in the clients house yet or have they signed anything. There is no service been offered to the Customer as of yet and we don’t even know if they qualify for the grant. This complaint is totally uncalled for as we haven’t been given the chance to offer a potential grant.
Sincerely
Customer Care
Stellar Energy UK
Update on 21 Apr
We can not do mains gas boilers under ECO3 for free. The way the funding works is as follows - The scheme, regulated by OFGEM, gives us a scoring tool that then equates to ££ money. Mains gas boilers have very little funding and scoring under this tool we are given. We can not control this scoring tool and therefore can not fit boilers for FREE.

Rated 5 out of 5 stars

Excellent Service!

Nicky and Dowie visited my girlfriends (Amanda) flat in Torquay this evening to insulate the loft. They are highly professional and friendly lads. Ryan, the manager who helped set the job up, has been great to communicate with throughout.
They are a great bunch of lads who are making a big difference to people’s lives.

25 February 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Thanks very much.

Rated 1 out of 5 stars

You should be ashamed

My mum has had so many problems with this company and is now looking into rip off Britain due to everything they have said to her. My mum has become so stressed that my husband has been trying to deal with it, Ryan is always in a meeting, simon said they will be here to fit your radiators on wed so you can stop your complaining... did they turn up... of course not. That was 3 weeks ago to be told again they'd be here today 8th jan 2021 did they come... of course not... I'll ring you back and let you know where they are their on there way... did they call us back... of course not, so we called them back... voicemail.
I wouldn't mind but my mum has just had radiotherapy and is very very tired and cold. To be told over and over so many lies.
When my husband called every hr he was told that they had no supplies until the 12th feb and we cant put them in until then, my mum wrote a review on here so they rang her straight away after the review to give her today's date and still didn't turn up. They couldn't turn up as the stock isn't due till 12th so we were told.
My mum has been waiting for nearly a year for the heaters from this company. They did the insulation within 2 weeks, they told her she needed economy 7 so she paid for that and still no heaters.
This company should be ashamed of themselves for the amount of lies they've told and leaving vulnerable people with no heating when they have promised it over and over.
We have waited in on so many occasions knowing they wont turn up but one day just one day they might.

8 February 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Hi Christine
What’s your Mum’s address or name please? There has been a massive heater shortage due to Brexit by the way. They are made in Germany.
Please email customercare@stellarenergy.org, putting subject field as complaint and we will investigate why your Mother hasn’t received the heaters. There is no use communicating on here.
Many thanks
Update on 11 Apr 2021
We have tried to make contact by asking what the clients name and address is so we can act upon this complaint. We never ever shy away from a customer query not do we ever prey on the vulnerable. That’s a barbaric comment to make with no proof. Send your full name over and we will deal
With this.
UPADATE ON 21 APR
Still no contact from the client

Rated 1 out of 5 stars

I got approved for a grant in feb/march…

I got approved for a grant in feb/march 2020, loft was done within 2 weeks. Still waiting for the heaters and wall insulating, no one told me I would need eco 7, so paid for this 157.00. Spoke with Ryan, Simon, plenty more people, sent emails, no reply. I spoke with the government people and they said to complain to whoever they got the grant off, they are saying they don't know who they get the grants off. Simon a couple of weeks ago said, because of all your complaining your heaters will be coming Wednesday! Did they come, ha no!! Rang again and Ryan in a meeting, then to be told they have no heaters and no delivery till Feb. Can't wait for a reply to this
UPDATE:
The company rang within 5 mins of this review, wow. Said they would be here today! Nowhere to be seen. Rang and he said he will ring installers and get back in 5 mins, never rang back, I've been ringing all day and no answer. I've give them all day to arrive and now writing an email to ripoffbritain and also consumer rights. I think I have given these companies who work together enough time from feb/ March 2020 until Feb 2021 to be able to take the government's money and not do the job

2 February 2021
Unprompted review
Stellarenergy logo

Reply from Stellarenergy

Hi Christine
I did say that you’re right. I just rang the storage heater company and gave then a good ear bashing! It was late on a Friday afternoon 22nd Jan correct? The storage heater company didn’t transfer your install date to their fitters and they never received the job! They are about to ring u now and book u in. Deepest apologies. Human admin error.

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