npower hopes the use of the famous duo will help consumers across the UK to get involved in the scheme, which aims to teach homeowners about the value of energy usage.
The characters will appear in a series of sketches explaining energy efficiency, showing that simple measures can make a big difference.
Sean Clarke, head of Aardman Rights, the team behind Wallace and Gromit, said the duo will "lend themselves perfectly to dispelling the myths around energy efficiency".
He added: "There are many bright little thoughts that can drastically reduce the amount of energy we use without losing those comforts we all take for granted."
npower recently announced it was scrapping surcharges on pre-payment meters to match the prices paid by standard quarterly cash or cheque customers.
The energy firm claims the move could reduce bills for those affected by £30 per quarter.
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