Why choose 100Green?
100Green is the only energy supplier in the UK that supplies customers with 100% green gas and 100% renewable electricity. It utilises green energy sources including hydro, solar, wind and organic waste material. While it’s not bound by the price cap on its standard variable tariffs, it doesn’t charge exit fees on any of its tariffs. This means customers are free to switch whenever they want.
Reasons to choose 100Green include:
- 100% renewable energy including 100% green gas
- No exit fees on fixed tariffs
- Strong customer service record.
What tariffs are offered by 100Green?
At the time of writing, 100Green offers the following tariff types, all of which are 100% green and don’t have any exit fees:
Fixed tariffs
These have fixed unit rates and standing charges so you’re guaranteed price certainty for the duration of the contract.
100Green offers a simple fixed tariff and a premium green tariff. The premium version fulfils strict sustainability criteria, including local wildlife protection where energy is generated. It also helps to finance renewable energy projects in developing countries.
Standard variable tariffs
These tariffs have unit rates and standing charges that can go up or down when global energy prices change. The supplier will always let you know of any price change 30 days in advance.
Time-of-use tariffs
These tariffs are ideal for those who have electric vehicles that they want to charge at home. They offer a cheaper rate of electricity at night, making it more affordable to charge your car and run your washing machine overnight.
100Green’s version requires customers to have a smart meter but offers seven hours of lower-rate electricity between midnight and 7am.
Does 100Green charge exit fees?
Unusually for an energy supplier, 100Green has opted not to charge exit fees on its fixed tariffs. Its website says “we don’t want to penalise you if you decide we’re not quite what you’re looking for. So there are no exit fees either. Simple as that.”
100Green renewable energy
As mentioned above, 100Green supplies renewable electricity from a range of sources, but it’s also the only supplier to offer 100% green gas. It achieves this through a process called anaerobic digestion which comes from waste products. While it acknowledges that this is a short-term solution as the UK attempts to transition away from using gas entirely, it’s an innovative and unique move that no other suppliers offer.
100Green 2024 reviews
As of January 2025, 100Green has a TrustPilot score of 4.2 from just over 1,200 reviews, though the vast majority of those reviews will have been left when it was known as Green Energy UK. The positive reviews focus on the green energy it provides as well as its strong customer service.
What are 100Green’s other products and services?
100Green’s non-energy supply product offering is fairly streamlined. It currently offers:
- A Demand Flexibility Scheme called High Tide, where customers can earn credit on their account by not using energy during peak times
- Customers who generate their own renewable energy can receive account credit for excess electricity they export to the grid.
Does 100Green offer energy-efficient products?
100Green doesn't offer energy efficiency products other than smart meters, but it does buy excess energy generated by those who have solar panels.
Can I get a smart meter with 100Green?
100Green offers smart meters to customers. You can get in touch with it by email or phone to arrange a free installation.
How do I contact 100Green?
100Green is the rare supplier that encourages customers to call it rather than use FAQs or a chat function. Customers can get in touch via:
- Phone: 1920486156 (8am-8pm Monday-Friday, 9am-1pm Saturday-Sunday
- Email: hello@100green.com
Does 100Green have an app?
100Green has a mobile app that iOS and Android users can download for free to help manage their energy account and gain insights into how they’re using energy around the home.
Is 100Green exempt from the price cap?
100Green was granted a permanent exemption from the price cap because it goes above and beyond when it comes to generating and supplying renewable energy to customers. This means that it can charge more than the price cap unit rate on its SVT as long as customers have actively chosen to be on it.
Which providers are similar to 100Green?
There aren’t many providers similar to 100Green because of the uniqueness of its green energy supply and its emphasis on customer service. If renewable energy is very important to you, it’s also worth considering Good Energy or Ecotricity. They too are exempt from the price cap on the strength of their green energy supply and investment.
Is 100Green going bust?
It’s unlikely 100Green is going to go bust. However, the energy market is challenging and unpredictable at the moment and there is a certain level of risk to some suppliers - find out why in our energy market Q&A guide.
How do I switch to 100Green?
It’s easy to switch energy with Uswitch. Simply enter your postcode below. We’ll show you the energy plans available in your area, including renewable energy deals. If 100Green is an option, you can compare to see if it’s right for you.
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