Table B3. Codes for Generating Unit Type

Code	Generating Unit Type
CA	Combined Cycle Steam Part (includes steam part of integrated coal gasification combined cycle)
CC	Combined Cycle Total Unit (Use only for plants/generators that are in planning stage, for which specific generator details cannot be provided.)
CE	Compressed Air Energy Storage
CS	Combined Cycle Single Shaft (combustion turbine and steam turbine share a single generator)
CT	Combined Cycle Combustion Turbine Part (includes combustion turbine part of integrated coal gasification combined cycle-type of coal must be reported as energy source for integrated coal gasification combined cycle.)
FC	Fuel Cell
GT	Combustion (Gas) Turbine (includes Jet Engine Design)
HY	Hydraulic Turbine (includes turbines associated with delivery of water by pipeline)
IC	Internal Combustion (diesel, piston) Engine
NA	Unknown at this time (Use only for plants/generators that are in planning stage, for which specific generator details cannot be provided.)
OT	Other
PS	Hydraulic Turbine – Reversible (Pumped Storage)
PV	Photovoltaic
ST	Steam Turbine, including nuclear, geothermal and solar steam (Does Not Include Combined Cycle)
WT	Wind Turbine

   Source:  Energy Information Administration, Office of Coal, Nuclear, Electric, and Alternate Fuels