Bubbling black liquid churns inside 145-foot-high tanks at the Newtown Creek sewage-treatment plant in Brooklyn. Like robotic stomachs, they burp methane, a byproduct of processed organic waste.
Enel Green Power SpA, a unit of Italy’s biggest utility, will spend 6.4 billion euros ($9.1 billion) through 2015 on power plants using wind, sun and other renewable sources, the chief executive officer said.
RMI’s Lovins Sees Ways to Produce Reliable Green Power (Audio)
NRG Energy’s Crane Discusses Green Power, Electric