Google Is Making Its Biggest Ever Bet on Renewable Energy

Solar panels in St. Ansgar, Iowa.

Photographer: Daniel Acker/Bloomberg
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Google Inc. is making its largest bet yet on renewable energy, a $300 million investment to support at least 25,000 SolarCity Corp. rooftop power plants.

Google is contributing to a SolarCity fund valued at $750 million, the largest ever created for residential solar, the San Mateo, California-based solar panel installer said Thursday in a statement.