NEW YORK — American homes are more cluttered than ever with devices, and they all need power: Cellphones and iPads that have to be charged, DVRs that run all hours, TVs that light up in high definition.

But something shocking is happening to demand for electricity in the Age of the Gadget: It’s leveling off.

Over the next decade, experts expect residential power use to fall, reversing an upward trend that has been almost uninterrupted since Thomas Edison invented the modern light bulb.

In part it’s because Edison’s light bulb is being replaced by more efficient types of lighting, and electric devices of all kinds are getting much more efficient. But there are other factors.

New homes are being built to use less juice, and government subsidies for home energy savings programs are helping older homes use less power. In the short term, the tough economy and a weak housing market are prompting people to cut their usage.

As a result, many families can expect their monthly bills to remain in check, even if power prices rise. For utility executives, who can no longer bank on ever-growing demand, a major shift is under way: They’re finding ways to profit when people use less power.

‘It’s already […]