Energy Efficiency

New control system adjusts light levels to match train timetable and passenger numbers, cutting lighting use 35 per cent

Almost three quarters of privately rented homes are let without an Energy Performance Certificate, according to freedom of information data

New CBI report calls for Energy Efficiency Deployment Office to live up to its name

Guy Newey wonders what could lie behind surprising news that domestic energy use is falling

Construction giant reveals the secrets of its green building designs

Thomas Heldgaard, managing director of Rockwool UK, reveals his plan to boost demand for the company's innovative insulation

New government figures show first Green Deal plan has been completed, with a further 418 in the pipeline

Free British Gas tool shows property owners what energy-saving measures they are eligible for under Green Deal and ECO schemes

Figures show household energy use fell by a quarter from 2005-2011, but industry insiders fear current policies will fail to continue the trend

Chief executive of the energy efficiency company reveals how he founded and built up a business offering energy management services for homeowners