I haven't tried it, but MSE have an auto switching service, and I'm sure you can select green suppliers.
https://clubs.moneysavingexpert.com/cheapenergyclub
Totally Money https://www.totallymoney.com/ also has an energy comparison service. I am friends with someone there; so yes you have to sign up to see it on their site.
@Arvy. started
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I haven't tried it, but MSE have an auto switching service, and I'm sure you can select green suppliers.
Totally Money https://www.totallymoney.com/ also has an energy comparison service. I am friends with someone there; so yes you have to sign up to see it on their site.