Paying a premium for renewable electricity is a thing of the past. Choose a cheaper renewable energy tariff and you can reassure yourself you’re going green without being out of pocket.

The average annual cost of a tariff that claims 100% renewable energy is £151 less than the average annual cost of being on a standard variable tariff with one of the Big Six energy companies.

But choose your tariff carefully. There’s a £367 difference in price between the cheapest and priciest tariffs offering 100% renewable electricity. Long-established renewable energy company Ecotricity costs £1,221 per year for a medium user. Newcomer Tonik Energy is the cheapest, at £854 per year.

The number of energy deals boasting renewable electricity has multiplied rapidly over the last year. There are currently more than 30 tariffs to choose from (as long as you’re happy to manage your account online).

Here we compare the renewable credentials of both new and established green energy tariffs, plus how their costs stack up.

If you’re keen to switch to a renewable company or tariff now, use our independent energy switching service Which? Switch? to find the best green energy supplier for you.

Read more: Which