Existing Hydropower Assets (EHA) Plant Database, 2026

Overview

The Existing Hydropower Assets (EHA) Plant Database provides a comprehensive nationwide inventory of U.S. hydroelectric and pumped‑storage facilities, capturing detailed technical, geographic, regulatory, and ownership attributes for thousands of plants across the U.S. The data includes plant identification, location, ownership class, FERC licensing status, hydro type (run‑of‑river, canal/conduit, peaking, pumped‑storage), unit count, installed capacity, annual generation, commissioning year, and waterbody information. The dataset includes micro‑hydro to multi‑gigawatt PSH plants. It supports analyses of spatial distribution, operational characteristics, regulatory compliance, and the evolution of U.S. hydroelectric infrastructure.