Philip Mezey, president and chief operating officer for Itron’s global Energy segment, has been appointed as president and chief executive officer of the company, effective January 1, 2013.

Mezey succeeds LeRoy Nosbaum, who will retire from Itron and the board of directors, although he will act in a consulting capacity for at least the next six months.

John Holleran, Itron’s senior vice president, special projects and corporate secretary, will become executive vice president and chief operating officer to lead the global Energy and Water segments.

Mezey has held his current role since March 2011, with responsibility for the operations of Itron’s electricity and gas businesses around the world. He has served the company in several capacities including senior vice president and chief operating officer – Itron North America, group vice president and general manager, as well as senior vice president for Software Solutions. He joined the company in 2003, on Itron’s acquisition of Silicon Energy, as managing director of Software Development for Itron’s Energy Management Solutions group.

Mezey joined Silicon Energy in 2000 as vice president, Software Development. Previously, he was a founding member and served 12 years with Indus, a provider of integrated asset and customer management software.

“Our industry is extending beyond its metering past and present; I truly believe Itron is the company that can define the next phase of this industry,” said Mezey. “I’m honored and excited to lead Itron forward and continue to grow its business around the world.”

Nosbaum has been president and CEO of Itron since he came out of retirement to rejoin the company on Malcolm Unsworth’s retirement in September 2011. He first joined Itron in 1996, becoming CEO in 2000 and chairman in 2002 up to 2009.