Stearn spent three years as an adviser in the Home Office Active Community Unit before his two-year stint at End Child Poverty. He has been brought in to mastermind Energywatch's transition from a complaints body to a campaigner for consumer rights.
'Much of this role revolves around low-income families and therefore has many parallels with my recent work with child poverty,' he said.
In the mid-1990s, Stearn was head of public affairs at Age Concern, where he worked on the winter fuel campaign.
Stearn oversees a team of six and works alongside a press office of four, reporting to CEO Allan Asher .
'We will be running major Energywatch campaigns that will put the consumer firmly on top,' he said, adding that the organisation was aiming to put 'an end to the social evil of fuel poverty' and help develop a sustainable future.
Prior to joining Age Concern in 1994, Stearn was deputy editor of magazine Inside Housing.