Mr Grady currently serves on the board of directors of Evergreen Solar, Verigy and Electro Scientific Industries.

Mr Grady was the president and CEO of Brooks Automation, a provider of automation solutions to the global semiconductor and related industries, until his retirement in October 2007, and continues to serve as a senior executive consultant. Prior to joining Brooks he was a partner at Propel Partners, a venture firm in Palo Alto, California.

Hans Betz, president and CEO of Advanced Energy, said: We are pleased to welcome Ed to our board. His extensive experience in our markets, particularly the solar market, will benefit Advanced Energy as we continue to grow.