Buildings generate most greenhouse gas emissions in the city. A handful of local architects is convinced that the German "passive house" standard might be the purest way to dramatically cut home energy use. They think passive houses accomplish what many LEED rated green buildings don't: they cut energy consumption directly though a low-tech, cost-effective approach that makes the walls, roof and ground floor airtight and rooms comfortable with minimal need for heating or air conditioning. . .
Right now there's only 6 certified homes in the U.S. Architect Sam Bargetz is using the technique to make Andrew bulger's 1,600 square foot pad in Greenpoint.