While solar, wind and biofuels have had plenty of attention, the unsung superhero of clean energy is Negawatts - a term coined by Amory Lovins in a 1989 Green Energy Conference. Two decades later, with a growing corporate interest in efficiency programs, energy efficiency may be this year’s hot trend in cleantech M&A & IPOs.

“Wall Street has piled billions into solar panels, wind farms, and other alternatives to oil and gas, but many investors also see big opportunities in making better use of older, dirtier energy sources…

…Boosting efficiency could be the easiest, quickest way to reduce emissions of harmful greenhouse gasses, starting with the task of installing new metering hardware and usage control systems in every home and building, proponents say. Continued over at PlanetArk via Reuters…