Our Team

Arunas Chesonis

Chief Executive Officer and Chairman of the Board

Mr. Chesonis joined Sweetwater as CEO in December 2011 after also serving as its Chairman since 2010.​ Prior to Sweetwater, he served as Chairman and Chief Executive Officer of PAETEC Holding Corp., a Fortune 1000 telecommunications company acquired in 2011 by Windstream Corp. (NASDAQ: WIN), one of the largest national telecom carriers. Arunas founded PAETEC in 1998.

Mr. Chesonis has a long history in sustainability and has supported numerous environmental and renewable energy research projects at the Massachusetts Institute of Technology to address climate change. He has also personally invested in the past 10 years in cleantech, life sciences, and information technology ventures through his involvement at universities in Boston and Rochester. 

He holds a B.S. in Civil Engineering from MIT, an MBA from the William E. Simon Graduate School of Business at the University of Rochester, and an Honorary Doctorate of Laws from the University of Rochester. Arunas is also a member of the M.I.T. Corporation and is a life trustee of the University of Rochester.

Arunas A.

Chairman & Chief Executive Officer


President & Executive Vice President


Senior Vice President & Chief Technology Officer


Senior Vice President & Chief Financial Officer

Dr. Lee

Chief Scientific Officer


Senior Vice President Real Estate & Construction


Vice President of Finance

Dr. Nina

Vice President of Intellectual Property

Sweetwater Energy uses a unique technology for producing low-cost nanofibrillated cellulose, microcrystalline cellulose, sugars, and clean lignin from non-food plant materials to help meet the modern world's increasing bioenergy and biochemical demands.

Contact Us

2400 Mt. Read Blvd.

Rochester, NY 14615

Call Us: 585-647-5760

Email: info@sweetwater.us