There is no shortage of bad green-energy news. Automakers are fretting about electric-vehicle growth, higher interest rates are smashing financial plans, permitting for big projects still takes forever and offshore wind is a mess. 

But for every setback, there is a Sun Streams. This cluster of solar farms will cover more than 13 square miles of desert west of Phoenix. By 2025, it will provide enough electricity for roughly 300,000 homes, bringing Arizona’s largest utility closer to its goal of a zero-carbon grid.