Peter Mostow, the leader of the renewable energy practice at Stoel Rives, has decamped to Wilson Sonsini Goodrich & Rosati, along with John Pierce, another partner in the practice.

Mostow joins a growing list of attorneys who have left Stoel’s San Francisco office this year. Pierce, based in Seattle, will remain in that city. Both partners left Stoel on Tuesday and started work at Wilson the next day, according to firm spokespeople.