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rivers of electric vehicles could easily cut their energy bills because they are on the wrong deals, analysts say.

Many households are going back to fixed-rate deals, which all but disappeared from the market during the energy crisis, but they may not be the best option, particularly for those with electric cars.

Other lesser-known tariffs, which charge different rates at different times of day, could save drivers hundreds of pounds a year — something many will be keen to do given that the regulator has just announced a 2 per cent rise in its price cap from October. Here’s what you need to know.

Beating the cap