Community and Environment Calor Gas | Calor Gas 1 min read12 January 2015 Welcome to Calor's Sustainability reports. Calor's 2012 Sustainability Review outlines our approach to corporate responsibility and sustainability for continued and measureable improvement for the next three years. Calor's 2013 Sustainability Progress Report updates on our progress against the targets we set in our Sustainability Report. Related The 1965 Leyton By-election: When Denis Healey Punched A Fascist By Lord Cryer 04 Jun Read the most recent article written by Calor Gas - A massive investment is urgently required to upgrade the energy efficiency of rural homes - Calor