Emma Thompson, of E.ON, says: "It is about the payback and insulation is typically a payback in year one for a lot of people."
However, Ms Thompson's recommendations did not end at insulation, as she also notes a number of subtle changes that can make a big difference in the quest for cheap electricity and gas.
Firstly, keeping curtains open on a sunny day can help to heat a room, while hanging washing outside instead of using a tumble dryer is another way to save cash.
The Department of Energy and Climate Change's new energy bill was announced last month and includes a number of steps to make British houses greener.
Posted by Anne Yevel
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