Energy Storage Systems Inc.

Energy Storage Systems Inc. is developing a safe, cost-effective, reliable and environmentally friendly all-Iron flow battery technology.

  • Stage Prototype Ready
  • Industry Clean Technology
  • Location Portland, OR, USA
  • Currency USD
  • Founded March 2011
  • Employees 11
  • Incorporation Type C-corp
  • Website

Company Summary

Energy Storage Systems Inc. provides a cost-effective, reliable and environmentally friendly energy storage solution based on its proprietary all-Iron flow battery technology. Our innovative products reduce customers’ electricity expenditures by over 33% and minimize the impacts of power outages on their business. Our first customers include light commercial and industrial users in the US with time-of-use pricing or high solar penetration.


  • Mr. Evans founded Energy Storage Systems Inc. (ESS) in 2011 and has served as its CEO since. Mr. Evans has over 15 years of experience leading a wide range of renewable energy product development at United Technologies Corp. and ClearEdge Power Inc. Mr. Evans has authored over 15 patents and patent applications. He holds an M.B.A. from Carnegie Mellon’s Tepper School of Business, and a M.S. in Mechanical Engineering from Clarkson University.

  • Dr. Song joined ESS in April of 2012 as the CTO. Prior to joining ESS, Dr. Song was the Vice President of Research and Development at ClearEdge Power Inc., where she was responsible to lead all corporate R&D projects. Dr. Song holds a B.S. in Chemistry from Peking University and a Ph.D. in Chemistry from University of North Carolina-Chapel Hill. She has authored 20 peer-reviewed publications and over 10 patents and patent applications.


  • Davis Wright Tremaine
    Perkins & Co.
    Bill Sproull
    Business Development
  • Larry Willeman

Previous Investors

  • Deptartment of Energy - ARPA-E
    Oregon Nanoscience and Microtechnology Institute (ONAMI)
    Oregon BEST
  • Portland Seed Fund

Starting a startup?

Join the world's largest startup network for guidance, tools, and fundraising opportunities.

Get Started for Free