The Department of Energy and Climate Change has been awarded a new, improved Display Energy Certificate (DEC) rating of 'C' for its headquarters building. A DEC is measure of the energy efficiency of a building, which is rated on a scale of A to G, with A being the most efficient and G being the least. On moving into 3 Whitehall Place in Autumn 2008, it had a 'G' rating.
Greg Barker, Minister of State for Climate Change said, "The new higher DEC rating of "C" represents a great achievement for the Department over the last four years. Only 23% of commercial buildings are rated C or above. Since 2008, the Department has cut its HQ building's energy consumption by 60% and slashed carbon emissions by half. This is even more impressive when you consider that staff numbers in the building have risen since DECC took it on.