Hospitals and prisons among worst offenders as figures confirm about 5,000 public buildings have lowest-band energy-efficiency rating
Investment in clean tech firms fell from 2008 levels, but is now recovering strongly
North Sea countries plan vast clean energy project
Energy-efficient lights that promise to cut bills by 70 per cent to be sold to local authorities and businesses
UK ethical market expands from £13.5bn to £36bn
Hydrogen fuel cells, solar energy and wind power top list of low carbon priorities
Increased government subsidies and recovering credit market more than compensate for disappointing Copenhagen Summit
OLEDs may soon replace lightbulbs in homes and offices with panels of energy-efficient light built into walls
Outsourcing giant launches new service to help firms cope with smart grid data glut
Integrating underground coal gasification with hydrogen fuel cells will revolutionise energy generation, predict Linc and AFC Energy