Tucson’s Solon Corp. has promoted William Richardson to general manager.

Richardson will direct and lead all Solon activities in the United States.

He has been with Solon more than five years, most recently as senior director of technical services.

Before that, Richardson was responsible for the North American technical services and research and development departments for Solon.

In 2009, Richardson implemented Solon’s N.A. Outdoor Testing Facility, where next-generation module, tracking and systems integration testing is conducted.

He previously worked for Tucson Electric Power.

Richardson holds degrees in renewable natural resources and electrical engineering.