FERC is the Federal Energy Regulatory Commission, an independent agency that regulates the interstate transmission of electricity, natural gas, and oil.

HP stands for horsepower, a unit of power commonly used to measure the output of hydropower turbines.

MW stands for megawatt, a unit of power equal to one million watts, used to measure the electrical output of hydropower plants.

kWh stands for kilowatt-hour, a unit of energy equal to one thousand watt-hours, used to measure the electrical energy generated by hydropower plants.

HA stands for head available, which refers to the difference in water elevation between the upstream and downstream sides of a hydropower dam.

HRS stands for hydropower rating system, a method used to determine the maximum power output of a hydropower plant.

EPRI stands for Electric Power Research Institute, a non-profit organization that conducts research and development on electric power generation, transmission, and distribution.

DOE stands for Department of Energy, a U.S. government agency responsible for energy policy and research.

CEQA stands for California Environmental Quality Act, a state law that requires environmental impact reports for certain projects, including hydropower plants.

NEPA stands for National Environmental Policy Act, a federal law that requires environmental impact statements for certain projects, including hydropower plants.

FEMA stands for Federal Emergency Management Agency, a U.S. government agency responsible for coordinating disaster relief efforts.

USACE stands for U.S. Army Corps of Engineers, a federal agency responsible for water resource management, including the construction and operation of hydropower dams.

BPA stands for Bonneville Power Administration, a federal agency that markets and transmits electricity from hydropower plants in the Pacific Northwest.

TVA stands for Tennessee Valley Authority, a federal agency that provides electricity, flood control, and other services in the Tennessee Valley region.

PUD stands for Public Utility District, a type of local government agency that provides electricity, water, and other utilities to its residents.