The government-backed body has trademarked the 'Energy Saving Week' concept and is aiming to sign up seven partners - one for each day of the week. So far, it has agreed deals with consumer electronics retailer Comet, B&Q and Procter & Gamble. It is in talks with a further four parties.
In the past, the Trust has worked with the Women's Institute and the Church of England.
The EST announced last year that it would develop partnerships in the private sector to help drive awareness of its initiatives.
It is currently running a £5m, 12-month TV, press, digital and outdoor push to drive consumers to its website and advice centres.
The work features the strapline 'Here to help everyone save energy in the home'. An initial tranche ran from May to June; a second will run from September until November; and a third is planned for the start of 2009.