ESS Tech, Inc. announced Harry Quarls has joined the ESS Board of Directors as Chairman. Michael Niggli, the ESS Founding Board Chairman, will remain on the board to assist with this transition and continue providing insights from his four decades as a utility executive. With over 40 years of energy experience, Mr. Quarls brings considerable strategic, financial, transactional, and energy investing experience to ESS as the company continues to scale to meet global demand for LDES.

Over his long and storied career, Quarls served as a Managing Director at Global Infrastructure Partners, leading their efforts in North American energy midstream investments, and as Managing Director and practice leader for Global Energy as well as a member of the board of directors at Booz & Company. Mr. Quarls currently serves as Chairman of CHC Helicopter and Key Energy Services as well as a Director for Seadrill Ltd. He has served in Leadership positions on numerous Boards including most recently FlexSteel Pipe, Mesquite Energy and EP Energy. He holds BS/ScM degrees in Chemical Engineering from Tulane University and MIT, respectively, and a M.B.A. from the Stanford Graduate School of Business.