LeRoy D. Nosbaum has been appointed president and chief executive officer of Itron, effective immediately, and also been appointed to the company’s board of directors.

Nosbaum previously served as Itron’s chairman and chief executive officer, first joining the company in 1996. He was named CEO in 2000 and chairman in 2002 and held both positions until 2009.

“Our board is excited to welcome LeRoy back to Itron and believes he is the right person to lead the company through its next phase of growth and development,” said Jon E. Eliassen, chairman of the board of directors. “LeRoy is a proven leader who obviously knows our business exceptionally well.”

Prior to joining Itron, Nosbaum held various leadership positions at Metricom from 1989 to 1996. Prior to that, he spent 20 years with Schlumberger and Sangamo Electric in a variety of executive and management positions. He earned an undergraduate degree in electrical engineering from Valparaiso University.

Nosbaum succeeds Malcolm Unsworth who has retired as Itron’s president, chief executive officer and a member of the board of directors.