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Kleiner Perkins and Accel Partners fund OPower to build up its software system for offering home energy efficiency recommendations through utilities.
A new estimate says Apple's newest iPhone costs only 41 cents a year to recharge if you do it once a day.
Your neighbors and lots of data crunching can help you cut home energy bills, says start-up, which is releasing software for smart-grid programs that nudge consumers toward efficiency.
Opower's social energy app on Facebook lets people track electricity use, compare to national averages, and compete with friends to improve home efficiency.
Greenpeace tries to cast some light on the energy sources behind data centers and commend IT companies that advance clean energy and efficiency through tech. Facebook and Apple aren't quite there yet, it says.
Thermostat maker Honeywell alleges Nest Labs has infringed seven thermostat-related patents and is seeking to prevent Nest Labs and Best Buy from continued sales of the Learning Thermostat.
The collaboration will encourage cleaner energy on the grid and data center efficiency through the Facebook-founded Open Compute initiative.
Social networking meets energy efficiency in Facebook app done with Opower and the Natural Resources Defense Council that lets people compare energy use to friends and the national average.
The familiar manual Honeywell thermostat will get a 21st-century upgrade by connecting over the Internet to Opower's home energy-efficiency recommendation service.
Blaming slow market adoption, Microsoft pulls the plug on its home energy management tool only a week after Google abandons its PowerMeter electricity monitoring app.