BT = Turbines used in a binary cycle (such as used for geothermal
CA = Combined cycle steam part
CC = Combined cycle total unit (used only for plants/generators that
are in planning stage, for which specific generator details cannot be
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 (type of coal or solid must
be reported as energy source for integrated coal gasification)
FC = Fuel cell
GT = Combustion (gas) turbine – simple cycle (includes jet engine
HY = Hydraulic turbine (includes turbines associated with delivery of
water by pipeline)
IC = Internal combustion engine (diesel, piston, reciprocating)
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
Energy Source: The first word or abbreviation is the primary
energy source. The second word or abbreviation is the alternate energy
AB = Agricultural crop byproducts/straw/energy crops
BFG = Blast furnace gas
Bit = Anthracite coal and bituminous coal
BLQ = Black liquor
DFO = Distillate fuel oil including diesel, No. 1, No. 2, and
No. 4 fuel oils
GEO = Geothermal
JF = Jet fuel
KER = Kerosene
LFG = Landfill gas
Lig = Lignite coal
MSW = Municipal solid waste
N = Natural Gas
Nuc = Nuclear including Uranium, Plutonium, Thorium
OBG = Other biomass gas including digestor gas, methane, other
OBL = Other biomass liquids (ethanol, fish oil, liquid acetonitrile
waste, medical waste, tall oil, waste alcohol, and other biomass not
OBS = Other biomass solids (animal manure and waste, solid byproducts,
and other solid biomass not specified)
OG = Other gas (butane, coal processes, coke–oven, refinery, and
OTH = Other (batteries, chemicals, coke breeze, hydrogen, pitch, sulfur,
tar coal, and miscellaneous technologies)
PC = Petroleum coke
PG = Gaseous propane
PUR = Purchased steam
RFO = Residual fuel oil (including No. 5 and No. 6 fuel oils and
Bunker C fuel oil)
S = Subbituminous coal
SC = Coal synfuel. Coal–based solid fuel that has been
processed by a coal synfuel plant; and coal–based fuels
such as briquettes, pellets, or extrusions, which are formed
from fresh or recycled coal and binding materials.
SG = Synthetic gas, other than coal–derived.
SGC = Synthetic gas derived from coal.
SLW = Sludge waste
SUN = Solar (photovoltaic, thermal)
TDF = Tire–derived fuels
Water = Water at a conventional hydroelectric turbine.
WC = Waste/other coal including anthracite culm, bituminous gob,
fine coal, lignite waste, and waste coal.
WDL = Wood waste liquids excluding black liquor, including red
liquor, sludge wood, spent sulfite liquor, and other wood–based
WDS = Wood/wood waste solids including paper pellets, railroad
ties, utility poles, wood chips, bark, and wood waste solids.
WH = Waste heat not directly attributed to an energy source.
WH should only be reported where the energy source for the waste
heat is undetermined.
Wind = Wind
WO = Waste/other oil including crude oil, liquid butane, liquid
propane, oil waste, re–refined motor oil, sludge oil, tar
oil, or other petroleum–based liquid wastes.
OA = Out of service – was not used for some or all of the
reporting period but was either returned to service on December
31 or will be returned to service in the next calendar year.
OP = Operating – in service (commercial operation) and
producing some electricity. Includes peaking units that are
run on an as–needed intermittent or seasonal) basis.
OS = Out of service – was not used for some or all of
the reporting period and is NOT expected to be returned to
service in the next calendar year.
SB = Standby/Backup – available for service but not
normally used (has little or no generation during the year)
for this reporting period.
Number of Wind Turbines:
A dash (—) indicates not applicable.
Sector (Primary purpose, regulatory status, and plant–level
combined heat and power status):
Commercial CHP = Commercial, Combined Heat and Power.
Industrial CHP = Industrial, Combined Heat and Power.
Industrial Non–CHP = Industrial, Non–Combined Heat
IPP = Independent Power Producer.
IPP CHP = Independent Power Producer, Combined Heat and Power.
IPP Non–CHP = Independent Power Producer, Non–Combined
Heat and Power.