A Big Solar Company May Be Collapsing

One of the largest residential solar installers in the U.S. appears to be on the cusp of failing, the latest sign of the troubled industry’s struggles.

SunPower, which is backed by French oil conglomerate TotalEnergies, said on July 17 that it would no longer be supporting new leases or power purchase agreements, which means it is essentially not acquiring any new customers. The company also said in a letter to dealers who sell its systems that it could not support installation of...