A new concept?. A new government iniciative? In April 1997 the president of The United States Mr Carter said: " From now on, we must make sure that new buildings are as (energy) efficient as possible, and that old buildings are equipped, or "retrofitted", with insulation and heating systems that dramatically reduce the use of fuel". In 1997 the publisher professional Builders edited the first book titled: " Energy and the Builder" A compendium from professional builder magazine on the energy sho…