energy conservation

The Profitable Side of Going Green

Mother Earth is getting a little bit of relief as more companies yield to pressure from environmentalists and activist shareholders to reduce their carbon footprints. But Gaia isn't the only one who's benefiting: Just ask some of the companies that have saved serious greenbacks by going green.

Putting Energy-Hog Buildings on a Strict Diet

Cutting energy use inside buildings -- both commercial and residential -- has become a hot market for a growing number of technology companies, from giants such as General Electric and Intel to Silicon Valley startups. And the federal government is an eager booster.

Investment Surge Powers Up Smart-Grid Tech

eMeter, which makes software for monitoring energy use, is the latest smart-grid tech startup to garner significant investment -- $12.5 million worth. With old electricity grids being replaced with smart ones, investors -- and tech giants like Google and Cisco -- are surging into the sector.