FIRST GET A SMART METER _ IT IS FREE!!  Buy Green Electricity. http://www.greenelectricity.org/ http://www.energysavingtrust.org.uk/home-energy-efficiency/switching-utilities/buying-green-electricity http://www.ethicalconsumer.org/buyersguides/energy/greenelectricitysuppliers.aspx Even Better, Have Solar PV Panels, A Heatpump or A Wind Mill installed; The government have support schemes: http://www.energysavingtrust.org.uk/renewable-energy/electricity/solar-panels