The walls were built extra thick to save heat and energy-efficient appliances kept energy use low.

VOA: special.2009.10.27

Cooler building temperatures in the winter could require more energy to heat the buildings.

VOA: special.2010.03.02

Solar water heaters are devices that use energy from the sun to heat water.

VOA: special.2009.04.20

Then they use radio frequency energy to heat the tissue around the catheter.

VOA: special.2010.03.02

But in certain landfills, including some accepting the BP cleanup, waste,heat and methane gas produced by decomposition are being used to generate energy.

VOA: standard.2010.08.05

Right now, And that has created problems - like in January, when a gas pricing dispute with Ukraine cut energy supplies and left a number of Europeans without heat.

VOA: standard.2009.05.08