Price of EU carbon allowances bounces back to more than €13 in trading today, after report confirms carbon price fell 21 per cent in 2009

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