Ashden is a London-based charity that works in the field of sustainable energy and development. Its work includes the annual Ashden Awards, advocacy and research in the field of sustainable energy, and mentoring and practical support for award winners. Sarah Butler-Sloss created the awards in 2001, from the Ashden Trust, one of the Sainsbury Family Charitable Trusts. In 2011 the charity changed its working name to Ashden, with its full name registered with the Charity Commission being 'Ashden, Sustainable solutions, better lives'.