Energy-efficient windows can improve comfort and reduce heat loss. Learn how they work, what features matter and when ...

When an older house fails an energy inspection, the report usually blames drafty windows or a tired furnace. The real culprit is more often a web of hidden flaws inside walls, attics, and electrical ...

Expanding efforts to cut down on energy waste could help the Texas power grid accommodate more data centers without spiking electricity rates, advocates say.

For most of the past half century, the arc of energy efficiency bent toward savings. Once Congress passed the nation’s landmark energy-saving law, the Energy Policy and Conservation Act of 1975, ...