A former CEO of solar integrator SPG Solar, Rooney has also served on the board of China’s Duoyuan Global Water Inc and was part of the team that helped guide the company through its initial public offering (IPO) in 2009.

Pique served as ERI’s CEO for nine of his 11 years with the company.

“GG has been instrumental to ERI’s success. His energy, commitment and industry experience have taken us from a small private company through a successful IPO in July 2008,” said Hans Peter Michelet, ERI executive chairman.

“Over the last nine years, we have taken ERI from a garage operation to a publicly traded company on the NASDAQ, while putting together a great team that continues to solidify our position in the desalination industry,” said Pique. “I am delighted that a capable leader like Tom Rooney will lead the team and continue to advance our high-efficiency energy recovery solutions.”