Turton (pictured), who started his role yesterday (20 February), joins EI following more than two-and-a-half years in charge of Madano's energy practice.
Before this he was head of news - including two years as acting director of communications - at the Department of Energy and Climate Change, where he served for almost five years.
He also spent over two years as deputy head of news at the Department for Business, Enterprise and Regulatory Reform between 2006 and 2008.
Turton will report to EI chief executive Louise Kingham and will be resposible for a small team.
"The new role covers external affairs across the organisation – from stakeholder, government and media relations to marketing of member services and online...and it draws on my previous energy comms experience," Turton told PRWeek.
His replacement will be announced later this year, Madano said.
The Energy Institute is a professional body for the UK energy industry. It is responsible for developing knowledge, skills and good practice towards a safe, secure and sustainable energy system.