I’ve just switched to 100 Green and had a great experience with their customer service. I got through to a real person straight away at 9am on a Monday, which was a pleasant surprise. Jill was re... See more
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Review summary
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What people talk about most
Reviews shaping this summary
I rang them up, a nice lady answered the phone (Sarah). My query was dealt with in seconds without asking me my second hamster's middle name, without endless keypad options that didn't apply, without... See more
Company replied
Very easy to make contact with, no waiting or multiple stages to go through. Professional agent who understood and answered my queries quickly. Great experience, which you can rearly say these days.
Company replied
Several things: first Billie Harding had a clear voice, so I didn’t have to ask her to repeat anything. Second, she sounded friendly and warm, and not as if it was a bother trying to sort out a small... See more
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Company details
Written by the company
We are 100Green — an award winning energy supplier. We've been supplying renewable energy to homes across the UK since 2001. Each of our unique tariffs are designed to help you live more sustainably, with every drop of our renewable energy generated right here in the UK. We have real people here to talk and listen. No chat bots, no call queues. We’re ready to pick up the phone and answer your email, so you can get on with enjoying your day.
Award Winning Customer Service
Written by the company
- We answer the phone when you call
- Real people here to talk and listen. No call menus, no chatbots. We won’t ask for an upfront fee when you join and if you leave us for any reason, there are no exit fees to pay.
Contact info
23 Baldock Street, SG12 9DH, Ware, United Kingdom
- 01920 486 156
- hello@100green.com
- 100green.com
Energy filled with nature made with care
4.6
Excellent
1K reviews
Replied to 100% of negative reviews
Typically replies within 24 hours
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Iv had so much confusion over a smart…
Iv had so much confusion over a smart meter that I didn’t want on the first of December told one thing one day and another on a different day and it’s still not sorted so will be changing my supplier in the new year I can’t believe that I have to take a day of to have my meter registered to me ? Over the phone and I’m still not done 20 days later
1 December 2025
Unprompted review
Reply from 100Green
Hi Nicolo, I’ve just caught up with the team on this and understand the metering team have been in touch and have resolved this with you. I do hope the resolution means you will consider staying with us. If you ever do have any questions the team are on the end of the phone and keen to help. Have a lovely Christmas. All the best, Amy
Great customer service
Great customer service but, most importantly, GREEN GAS!
19 December 2025
Unprompted review
Reply from 100Green
Hi Stephen . Thank you for your kind feedback. And yep… gas green from source! Have a wonderful Christmas. Amy
Hello I am their costumer for more than…
Hello I am their costumer for more than 5 years and I had a small issue which was sorted very quickly and I am really pleased to say that 100 Green Energy has a GREAT Costumer Service.
Thank you again, I will remain your faithful costumer.
15 December 2025
Unprompted review
Reply from 100Green
Hi Carmen, thank you for taking the time to leave such a kind review. Being with us for over five years genuinely means a lot, and we’re glad we were able to resolve your issue quickly. A consistent, reliable service is exactly what we aim for! Thanks again for your continued trust — we’re proud to have you as a customer. Have a wonderful rest of the week. Lewis
Very helpful
Lucy was incredibly friendly and helpful. She was very informative about different payment plans and helped me quickly make a decision. Very grateful for her service.
8 December 2025
Unprompted review
Reply from 100Green
Hi Max, thanks for taking the time to share your feedback. It’s great to hear that Lucy was able to walk you through our payment options clearly and help you decide. We’re glad you had a good experience. If there’s anything you need, we’re always here to help. Have a wonderful rest of the week! Lewis
What amazing customer service
I went on line to review my latest bill. It was a lot higher than I was expecting. I phoned the number listed and got through to a person within a few rings. She was so helpful and suggested that I might have submitted an incorrect reading. I had and so called back (again got through quickly) and the whole matter was resolved. So unusual (in my experience) to get such great service from a utility company. I could never get to speak to anyone at British Gas.
5 December 2025
Unprompted review
Reply from 100Green
Hi Susan, thank you for sharing such positive feedback. It’s great to hear how smoothly everything was resolved and that you had such a straightforward experience getting through to the team. We’re really glad the issue with the reading was spotted quickly and sorted. If you ever need anything else, just let us know. Lewis
The worst energy company I have ever…
The worst energy company I have ever had to deal with since Eon energy!
Joined them in the middle of December 2024 they took their first payment in February a very small amount then a huge amount in March which obviously left me in debt to the company as no payments were made for December and January.
They’ve been driving me round the bend ever since as they advised I’ve used nearly £700/£800 pound of energy within 2 months. I live in a 3 bed terraced property so unless my heating has been on day and night there is no way my usage would be this high! Every time I have questioned them they advised it’s what the smart meter has advised them of. I did move houses in middle of December.
Updated 06/12/2025 Hi Lewis, thank you for your update following my review. It is just to advise I have tried submitting information however it has not allowed myself any access onto the system.
5 December 2025
Unprompted review
Reply from 100Green
Hello Mrs Iqbal,
Thank you for taking the time to leave your feedback.
I can see this situation has been incredibly frustrating, and I’d like to help clear things up.
We’ve sent a request for more information so we can review your account in detail—this can include any information you think we might need to help us investigate further. Once we have those details, we can check whether your billing is accurate and correct anything that doesn’t look right.
Please respond to the information request when you can, and we’ll pick this up straight away.
Kind regards,
Lewis
Satisfactorily resolved
Extended and stressful dispute satisfactorily resolved after intervention of line manager. With thanks!
5 December 2025
Unprompted review
Reply from 100Green
Hi Peter, thanks for taking the time to leave your feedback. We’re pleased the issue was resolved and that the support from our team helped bring things to a better conclusion. If there’s anything further you’d like us to look into, or if you feel there’s more we can do following our recent conversations, we’re always here to help. Thanks again, and have a great weekend. Lewis
Reply from 100Green
Thank you Liz! We really appreciate you taking the time to share this. It’s great to hear our responsiveness stood out for you. If you ever need anything else or have more questions down the line, we’re always here to help. Have a great day. Lewis
Join at your own risk
Joined in October and requested dumb mode for my smart meters. I was told that would be sorted the following week as id joined and went live on a weekend. That was fine.
I waited a week or so after that and called for an update.
I was told the smart meters were still in smart mode.
Again I requested a change.
I had automatic readings taken at the end of November.
When I contacted them about it.
I was told it hadn't switched over properly when they attempted it weeks previous.
So I spent weeks with no knowledge of this failure. No contact through email, calls, text absolutely nothing.
I message today and get told the relevant teams management knew this hadn't been actioned, they knew there was a problem.
Yet no contact.
Either the company has a serious lack of infrastructure necessary to provide an acceptable service.
Or
They simply do not care about the service they provide.
5 November 2025
Unprompted review
Reply from 100Green
Hi Philip. I am sorry to read this. Service is very important to us and so when a customer is not happy with their experience, we want to understand what has happened and what we can do to fix it. I understand that our metering team has been liaising with you on this over the last couple of days and identified the source of the confusion and rectified it. Should you have any concerns please don't hesitate to get back in touch. Kind regards Amy
Knowledgeable
Knowledgeable, English staff easily able to field queries. A refreshing change.
3 December 2025
Unprompted review
Reply from 100Green
Good afternoon - thank you so much for leaving this review. Great to hear you are happy with the service. Have a wonderful day. Amy
Reply from 100Green
Hello there. Ah...Thank you for the very lovely review. :) Green and smiley! Enjoy the rest of your day. Amy
Worst app ever
Please update your iOS app ASAP. It’s a disgrace to have your customer having to use such a primitive app. It was at least semi decent just a few months ago but now it’s absolute rubbish.
I don’t have any other issues with 100 Green, and their tariffs are quite decent, but I am seriously fed up and mentally prepared to switch and to pay more but have a decent app that works and can provide relevant information (such as daily usage!)
1 December 2025
Unprompted review
Reply from 100Green
Hello Artem. We've been trying to locate your account so we can get in touch and help resolve this for you. Can you possibly respond to the Trustpilot request for more info? Thank you. Amy
I messaged with Shalama on 1/12/25 and the replies were prompt, polite and helpful. It was a pleasure to be able to get in touch with an employee so quickly. Thank-you. Christine
I messaged with Shalama on 1/12/25 and
1 December 2025
Unprompted review
Reply from 100Green
Hi Christine, thank you for leaving such a lovely review. I've shared with Shalama and the team. It does mean a lot to have such positive feedback. Have a wonderful day. Amy
Reply from 100Green
Thank you for taking the time to leave this feedback, Caroline. It’s great to hear that we could be helpful. That’s exactly the standard we aim for, so it’s brilliant to know it came through in your experience. If you ever need anything else, we're here and happy to answer any of your questions. Have a great weekend. Lewis
Corrected wrong final reading
I had an issue with an incorrect final reading from my previous supplier which meant that 100Green were overcharging me. I didn't spot the error straight away. When I did and flagged it with 100Green they adjusted my bill immediately and with no quibbling. Good customer service.
17 November 2025
Unprompted review
Reply from 100Green
Hi GP, thanks for taking the time to share your feedback. We're glad we could get that final reading sorted out quickly for you. It’s great to hear that the team was able to put things right straight away. If you ever need anything else, we’re always here to help. Have a wonderful rest of the week! Lewis
Up Dating my Prifile
I had written my needs to amend our profile and the team namely
Robyn Bonnett had been very response even at night and he had resolved all my needs
20 November 2025
Unprompted review
Reply from 100Green
Hi Mazen, thanks you for taking the time to share this. We're really pleased to hear that Robyn was able to jump in quickly and get everything sorted for you. Your feedback means a lot to us, and we're always here if you need anything else. Have great week! Lewis
Lovely friendly and helpful agent.
Lovely friendly and helpful agent.
Addressed my query in my language and helped me find the information I needed easily
20 November 2025
Unprompted review
Reply from 100Green
Thanks so much for taking the time to leave this review, Andrew. I’m glad to hear that you had a friendly and helpful experience, and that we were able to find the information you needed. If you ever need anything else, we’re always here to help. I hope you have a wonderful weekend! Lewis
Top Company
I have been with 100Green for years, always a pleasure to deal with
14 November 2025
Unprompted review
Reply from 100Green
Hi Rosie, thank you so much for your lovely review—we're delighted to hear you’ve been with us for years and that it’s always a pleasure dealing with us. If there’s ever anything you need, we’re always here to help. Hope you have a great week! Lewis
Poor Usage Monitoring
Prompt replies to emails but tone of emails not always good.
Still rely on display monitors and no other links to meter data. So if you live in flat no ability to monitor data.
Not sure why they do not have monitoring like Octopus or Tomato - weblinks to meter data. Seems very outdated data approach to monitoring energy usage.
Issues continue - on a variable tariff and they charge me the higher rate for all electricity. Then say they have no data to calculate despite previously sending me excel data !!
Update - terrible customer service. Asked them twice not to contact me but they called and then wrote to me!!!???
13 November 2025
Unprompted review
Reply from 100Green
Good afternoon. We really appreciate you sharing your feedback. We’ll review this internally, as friendly and clear communication is very important to us at 100Green. Data is also a big focus for us right now and thank you for sharing your thoughts on this too. There are only a few time-of-use tariffs in the market at the moment so we're working hard to make sure the usage data associated with ours is as useful and accessible as possible. Thank you again for the honest review — it genuinely helps us improve! Lewis
We immediately changed to 100Green in our new home as well
They are responsive, reliable, they listen to your problem and they are very kind. A big change compared to Octopus. And of course the biggest thing is that we can relax a little bit that we are using fully renewable energy. Thanks very much.
7 November 2025
Unprompted review
Reply from 100Green
Hi Judit, that’s amazing to hear — thank you. We love that you’ve brought 100Green with you to your new home. It means a lot that you've noticed the difference in our customer service, and I'll make sure our team hears that we did a good job. Knowing that your energy is 100% renewable makes all the difference. Have a great week! Lewis
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