As part of its energy efficiency programme, Woking Council implemented its first CHP system in 1992 and the UK’s first small scale CHP/heat fired absorption chiller system in 1994 for which the Council won the CHPA 1996 CHP in Buildings Award, followed by a series of private wire residential CHP systems (the first and still the only systems of their type in the UK). There are also other renewables on site, including solar photovoltaics. The integrated photovoltaics roof and CHP system will have a reverse winter/summer electricity profile with the potential to achieve 100% sustainability in electricity (CHPA, 2014).