2nd Comment Period Open – Draft Definition of Low Impact Pumped Storage Hydro

December 1, 2025: In response to first round comments on  the LIHI draft definition of Low Impact Pumped Storage Hydropower (LI-PSH), the definition has been revised and a 2nd public comment period is now open.  The definition and supporting documentation could help provide an outline for best practices in developing and operating LI-PSH projects. Once final public comments have been received and the definition finalized, the LIHI Governing Board may consider creating a Low Impact certification program for LI-PSH projects.

LIHI would like to hear from interested parties on this revised draft definition.  The draft definition and details about how to comment can be found HERE.  Comments are due by 5 pm Eastern time on January 30, 2026.