> As part of its ecological efforts to prevent such a crisis, Apple claims, its buildings will run solely on sustainable energy, most of it from solar arrays on

> As part of its ecological efforts to prevent such a crisis, Apple claims, its buildings will run solely on sustainable energy, most of it from solar arrays on the roofs. Does it make economic sense to NOT build solar arrays on new buildings these days? Even for your average-sized office or apartment building. It seems the added cost would only push the budget up marginally in most cases.