Google is renowned (and sometimes ridiculed) for its willingness to allow a vast herd of esoteric projects to roam its offices, but inevitably there is a culling. Among several victims announced today: Renewable Energy Cheaper than Coal (RE

Power tower systems work by assembling an array of mirrors (heliostats) around a tower receiver, where water (or some liquid) is heated, ultimately creating steam to drive a turbine. Plants along these lines are operating in Spain, and BrightSource Energy’s Ivanpah plant now under construction in the California desert – with $168 million in backing from Google – will be the