NEW YORK (AP) — The average amount of electricity consumed in U.S. homes has fallen to levels last seen more than a decade ago, back when the smartest device in people's pockets was a Palm pilot and anyone talking about a tablet was probably an archaeologist or a preacher. Because of more energy-efficient housing, appliances and gadgets, power usage is on track to decline in 2013 for the third year in a row, to 10,819 kilowatt-hours per household, according to the Energy Information Administration. That's the lowest level since 2001, when households averaged 10,535 kwh.