Almost every electricity supplier has a ‘green’ tariff aimed at customers who want to buy renewable energy.
These tariffs are labelled as green if some or all of the units of electricity that the customer buys are ‘matched’ by units of energy that have been generated from a verified renewable energy source, like a wind farm, solar array or hydroelectric power station.
But how green are they? The answer is they vary. Some are genuinely all-renewable, others are something of a half-way house, and others aren’t really green at all.
Or, listen to the audio segment below from BBC Radio 4’s programme ‘You and Yours