About 100Green
100Green is a domestic energy supplier focused on renewable electricity tariffs. It is a relatively small supplier by customer numbers and is classified as a new or growing entrant in the market. In Which? sustainability assessments 100Green scored 70% in 2024, placing it in the upper tier for green credentials behind only Octopus Energy, Ecotricity, and Good Energy.
100Green has been noted for fast contact response times in Citizens Advice data. However, the company has not signed up to certain industry voluntary commitments including the Energy Switch Guarantee and the Vulnerability Commitment as of the time of recent assessments.
Tariff types offered
100Green focuses on green electricity tariff products. Check the partner comparison tool for current availability and tariff structures at your postcode.
Contact information
Website: 100green.co.uk/contact
To compare current tariffs from 100Green alongside other UK suppliers, use the comparison tool below.
Trustpilot rating
100Green holds a Trustpilot rating of approximately 4.8 out of 5 based on its customer reviews. Check Trustpilot directly for the current rating and volume.
Fuel mix
100Green publishes an annual fuel mix disclosure. Check the 100Green website for current figures and sourcing methodology.