UK Government is set to review electricity tariffs that claim to be "green" over concerns some energy firms could be exaggerating their environmental benefits.
Energy minister Anne-Marie Trevelyan said nine million households across the UK are on tariffs branded "100% renewable" or "green".
But industry figures have warned that the claims may be misleading and are calling for changes to rules over the labelling.Energy companies are currently able to market tariffs as "green" even if some of the energy they supply to customers comes from fossil fuels.
They do this by purchasing Renewable Energy Guarantees of Origin certificates to offset the use of fossil fuels, with each certificate guaranteeing a similar amount of green energy is produced..
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