Contour Homes is helping its tenants save more than £74,000 on their electricity bills - thanks to a ‘green’ refurbishment of three tower blocks. Contour has teamed up with Scottish Southern Energy to transform 186 flats on the Avenham estate, Preston, into ultra-energy efficient homes. The £1.8m upgrade – which includes external insulation, new double glazing and state-of-the art biomass boilers providing constant hot water and central heating - will mean hundre...