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100Green Reviews 

1,562
TrustScore 4.5 out of 5

4.6

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Review summary

Created with AI, based on recent reviews

Evaluating 277 reviews, reviewers overwhelmingly had a great experience with this company. Customers frequently praise the friendly, welcoming staff for answering phone calls promptly and resolving everyday issues within just a few minutes. People deeply appreciate speaking directly with real, knowledgeable advisors who provide clear guidance, reassuring explanations, and exceptionally efficient support. Consumers consistently show how smooth the switching process feels thanks to dedicated professionals who walk them through every step. However, some customers also noted that customer service interactions could occasionally feel frustratingly slow, unhelpful, or handled by indifferent advisors. A few people additionally experienced issues with unexpected billing discrepancies, higher monthly costs, or communication delays during their supplier transition.

What people talk about most

Customer service

Customers had positive experiences with customer service, noting that phone calls and online chats are... See more

Staff

Reviewers highlight positive aspects of staff, noting that representatives are consistently friendly,... See more

Service

People report positive experiences with service, highlighting a seamless and smooth transition when switching... See more

Response time

Clients share positive opinions on response time, frequently highlighting that phone calls and online... See more

Price

Consumers find pricing experiences to be highly mixed and divided. Many reviewers appreciated reasonable... See more

Reviews shaping this summary

Rated 5 out of 5 stars

Customer Service: First Class! I have nothing but praise for 100green's customer service. No question has been too trivial to be answered and today, yet again, I received an email response tha... See more

Company replied

Rated 5 out of 5 stars

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

Rated 5 out of 5 stars

Linda's customer service was outstanding. She was understanding and able to create a solution to the issue I was having. She explained everything she was doing so I was able to understand the process... See more

Company replied

Rated 5 out of 5 stars

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

Company replied


Company details

  1. Green Energy Supplier
  2. Electric Utility Company
  3. Energy Supplier
  4. Fuel Supplier
  5. Gas Company

About 100Green

Written by the company


We are 100Green, an award-winning energy supplier. Providing renewable energy to homes across the United Kingdom since 2001.

Each of our unique tariffs has been 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 chatbots, 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

Promotion box for 100Green

Energy filled with nature made with care

Choose an award winning, renewable tariff to suit your lifestyle.

4.6

Excellent

TrustScore 4.5 out of 5

2K reviews

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1-star

No recent history of asking for reviews

This company hasn't invited customers recently, so reviews may not be representative

Replied to 100% of negative reviews

Typically replies within 48 hours

How this company uses Trustpilot

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4.6

All reviews

(1,562)

274 reviews in the last 12 months

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Companies on Trustpilot aren't allowed to offer incentives or pay to hide reviews. Reviews are the opinions of individual users and not of Trustpilot. Read more

Rated 5 out of 5 stars

Issue with Previous Supplier

Despite changing to 100Green on 24th August, my previous supplier still regarded me as their customer and continued to build up a Standing Charge AND take a monthly D/D payment. Despite my best efforts I could not get them to correct the problem. I spoke to "Lemmi" at 100Green today and thanks to his advice and suggestions, I believe I have now managed to get my previous supplier to close my account. He was EXCELLENT!

3 September 2026
Unprompted review
Rated 5 out of 5 stars

Exemplary customer service!

The customer service is really something! It is very refreshing to not be put in a queue and to be always greeted in a positive and friendly manner. The answer to my query was clear and when I asked an unrelated question that required a different department, that was followed up straight away. I have been a customer for many years now and in all honesty, I haven't come across a better quality customer service when dealing with utility companies. Really excellent. Thanks.

2 September 2026
Unprompted review
100Green logo

Reply from 100Green

Morning Ben, thank you for the lovely feedback. So pleased that you were happy with the service and that your questions were answered. It really means a lot to the team to know that our customers genuinely appreciate the service. Have a great day! Amy

Rated 5 out of 5 stars

Service was good

Service was good. Emails and calls were attended quickly. There was no service interruption in the 1 year I had with them. Overall really good and source from renewable as well.

2 September 2026
Unprompted review
100Green logo

Reply from 100Green

Good morning - thank you so much for leaving such a positive review. I'm so glad you have appreciated the service and the fact that the energy is green too! Amy

Rated 5 out of 5 stars

Really helpful customer service

Really helpful customer service. No frills but quick and easy to get answers.

28 August 2026
Unprompted review
100Green logo

Reply from 100Green

Morning Tom - thank you for taking a moment to leave us such a positive note. Have a great day! Amy

Rated 5 out of 5 stars

Fantastic Customer Service

The customer service team have been fantastic and have made the transition to 100Green extremely stress free and easy!

26 August 2026
Unprompted review
100Green logo

Reply from 100Green

Morning Alexandra - thank you for your review and so please to hear that you found the experience simple and easy. We're here if you ever need us! Kind regards, Amy

Rated 5 out of 5 stars

Very kind and friendly staff

Very kind and friendly staff, easy to set up. Glad to pay a bit more for eco option.

21 August 2026
Unprompted review
100Green logo

Reply from 100Green

Hello there - thank you for your review. That's great to gear you're happy with the service and delighted to know you have chosen our eco-labelled tariff! Have a great day. Amy

Rated 5 out of 5 stars

Great customer service

We have always been satisfied with our service with 100green. Prices are very reasonable and customer service is great. In particular, Billie picked up a request from me very close to chat centre closing hours, and even stayed online to action my request after their usual opening times finished. Thanks for the great service, it’s hugely appreciated and the experience was seamless.

24 August 2026
Unprompted review
100Green logo

Reply from 100Green

Hi Lauren - this is so lovely to hear and I'll be sure to let Billie know. So pleased to hear you were happy with the service and your experience. Enjoy the rest of your day! Amy

Rated 5 out of 5 stars

Billie Harding 5 star

Billie Harding what a women, costumer service! So helpful friendly and quick and efficient. Helped me so much as struggling financially while in between jobs, help me reduce my payments with in a few minuites! Although chat for shut at 8pm she stays on till 8:05 till everything was confirmed and sorted 5 star service. Thankyou

24 August 2026
Unprompted review
100Green logo

Reply from 100Green

Good morning Gemma - thank you for such a lovely review. I'll be sure to let Billie know! Really appreciate the time you took to leave us this feedback. Have a lovely day! Amy

Rated 1 out of 5 stars

Nearly two months, an outrageous estimated bill, and no clear answers

We moved into the property with no proper explanation of the tariff or contract. When opening the account( in order to change to our prefered supplier), we sent 100Green the meter reading and photos. When we later tried to leave, we sent photos of exactly the same meter. Suddenly, 100Green said they could not use them and demanded “Rate 1” and “Rate 2” readings. Our meter does not display these, and nobody has clearly explained what they are or how we are supposed to obtain them.
100Green then issued an estimated bill which is way more expensive basic on common understanding, even though our photos show only 172 kWh of usage. Their explanations have also been inconsistent: first they referred to specific opening readings, then admitted those readings were probably estimated, and later claimed we had never provided an opening reading.
Every email is answered by a different person, but nobody answers the basic question: how exactly was the bill calculated? They just keep asking for more meter photos.
After nearly two months of circular emails, the bill and supplier switch are still unresolved. Extremely slow, confusing and frustrating customer service.

22 August 2026
Unprompted review
100Green logo

Reply from 100Green

Hi Mr Choi, I am sorry to hear this - but thank your for taking the time to leave us this review. We really do value feedback from our customers whether its good or bad. I have asked our Operations Director to look into what has happened here and personally get in touch with you. Kind regards, Amy

Rated 4 out of 5 stars

Cannot fault the customer service team…

Cannot fault the customer service team for help and support, just wish you could sort out the in house display units as we haven’t had ours working since our street had a power cut early July.

21 August 2026
Unprompted review
100Green logo

Reply from 100Green

Good afternoon Mr Bishop - thank you for your feedback.. its really valuable to us. I have requested some more information from you (via Trustpilot) if you wouldn't mind responding. We'd like to look further into the IHD issue because these things usually can be solved... please do get in touch and we'll do what we can to turn the four star experience into a 5 star one! Enjoy your evening. Amy

Rated 5 out of 5 stars

This Utilities Company is excellent and i highly recommend them.

This Utilities Company is excellent i have been a customer now for nearly 4 months and the experience has been very positive. If you ever have to phone customer services your not kept waiting and they answer the phone quick. Also they are allways on the same level as you and very easy to discuss any concerns you may have.A lot of the companies in the uk should adopt the same values that 100 green stands by. This is how customer service should be managed. I switched through you switch because my previous supplier was horrenduos and was billing me each month a ridiculous amount of money for substandard service. You pay your first month in advance so you dont have a debt problem with your account. And your first payment is collected 7 days after you have switched to 100 green. This is my review and keep doing what your doing 100 green dont need to change anything. Thankyou i appreciate the service you provide to me.

20 June 2026
Unprompted review
100Green logo

Reply from 100Green

Hi Christopher - thank you so much for taking the time to leave this lovely review - what a pleasure to read. If you do ever have any concerns or questions about your bill, please do get in touch with the team who will always be happy to help. Kind regards, Amy

Rated 5 out of 5 stars

I had a query with my bill / meter…

I had a query with my bill / meter reading, and it was dealt with on the phone within 5 minutes, no waiting. I very much appreciated the speed and efficiency of the employee I spoke with.

20 August 2026
Unprompted review
100Green logo

Reply from 100Green

Morning - thank you for taking a moment to leave us a review. So pleased to hear you are happy with the service. Have a lovely week. Kind regards, Amy

Rated 5 out of 5 stars

SAHIR WAS VERY HELPFUL AND EASED ME…

SAHIR WAS VERY HELPFUL AND EASED ME INTO RESOLVING THIS BILLING ISSUE.

19 August 2026
Unprompted review
100Green logo

Reply from 100Green

Hi Glenn - thank you for your feedback - I'll be sure to let Sahir know you were pleased with the service. Have a great day! Amy

Rated 5 out of 5 stars

Great customer service

Great customer service, very friendly and easy to talk too. Let's say just "real people" that understand..
Smooth easy change over from another company. Couldn't recommend highly enough..

18 August 2026
Unprompted review
100Green logo

Reply from 100Green

Morning Elizabeth - thank you for your kind feedback. That's lovely to read. So pleased that the switch was smooth. Have a great rest of the week. Kind regards, Amy

Rated 5 out of 5 stars

Quick fix of our account!

My husband and I have moved to a new home but all utilities accounts were set up under his name by the developer. I couldn't produce address proof as we couldn't have both our names displayed in the bills unless we close the account and create a new under my name. We had spent a lot of time and effort to fix it but still failed. Today, we received email from Lucy, a wonder customer care staff of the 100Green. She was polite and helpful. She reviewed our situation and fixed the problem in a minute! All our frustrations are gone! We can open our bank account now. Thank you, Lucy. You've done a great job for us!

17 August 2026
Unprompted review
100Green logo

Reply from 100Green

Good morning! Ah this is great to hear - finding proof of address is one of life's annoying admin tasks that can't be avoided! So pleased Lucy was able to help and sort that out for you. Thank you so much for letting us know. Enjoy your week. Amy

Rated 1 out of 5 stars

Don’t ever use this service

Don’t ever use this service, they are chasing for money from 2023 which upon closing app I paid the remaining balance what was due and now after a year chasing for £800 which as per their estimate this is correct. Which is not right, this calculation should of made years ago and they have not done this.

14 August 2026
Unprompted review
100Green logo

Reply from 100Green

Good morning. I am sorry to hear this. Please could you respond to the request for more information so we can locate you on our system and look into what has happened here? It's important to us that we have all the information so we can put right anything that needs fixing. Thank you. Kind regards, Amy

Rated 5 out of 5 stars

Problems dealt with efficiently.

The customer Service Agent I spoke to was first class. She was so helpful and patient just what is needed when requiring detailed information regarding tariffs. She also said she would be able to get my Smart Meter reprogrammed from Economy 7 to Single Unit at a lower monthly cost because my night usage is low compared to the average consumer. She has also arranged for me to have a monitor which I have been unable to obtain since the Smart Meter was fitted without a functioning monitor several years ago. Full marks to staff at 100Green!

13 August 2026
Unprompted review
100Green logo

Reply from 100Green

Good morning Maureen - thank you so much for taking the time to leave us such a lovely review. I'm so glad to hear that you were happy with the service and we could help make sure you are on the right tariff for your needs. Have a lovely day. Amy

Rated 5 out of 5 stars

Solved!

Service was Great!, Billie helped me resolve an issue we had with billing and now it’s fixed has saved me a lot thank you.

12 August 2026
Unprompted review
100Green logo

Reply from 100Green

Hi Jaime - thank you for letting us know - I'll be sure to pass on your feedback to Billie. have a great week. Amy

Rated 5 out of 5 stars

100Green are superb

100Green are superb! They answer my emails within 2-3 days and if they don't have the answers or they are struggling with getting the answers, they always come back to me!

3 August 2026
Unprompted review
100Green logo

Reply from 100Green

Morning Alistair. Thank you for your kind feedback - so glad to hear you are happy with the service and speed at which we reply! Have a wonderful week. Amy

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