116
Report—Manufacturing and Transformation/Processing
Coal Plants and Commercial and Institutional Users.”
Coal Consumption, Residential and Commercial
Sectors. • 1949–1999: Calculated annually by EIA by
dividing the heat content of coal received by the residential
and commercial sectors by the quantity received. Data are
from Form EIA-6, “Coal Distribution Report,” and prede-
cessor forms. • 2000–2007: Calculated annually by EIA
by dividing the heat content of coal consumed by commer-
cial combined-heat-and-power (CHP) plants by the quantity
consumed. Data are from Form EIA-923, “Power Plant
Operations Report,” and predecessor forms. • 2008
forward: Calculated annually by EIA by dividing the heat
content of coal received by commercial and institutional
users by the quantity received. Data are from Form EIA-3,
“Quarterly
Coal
Consumption
and
Quality
Report—Manufacturing and Transformation/Processing
Coal Plants and Commercial and Institutional Users.”
Coal Consumption, Total. Calculated annually by EIA by
dividing the total heat content of coal consumed by all
sectors by the total quantity consumed.
Coal Exports. • 1949–2011: Calculated annually by EIA
by dividing the heat content of steam coal and metallurgi-
cal coal exported by the quantity exported. Data are from
U.S. Department of Commerce, U.S. Census Bureau,
“Monthly Report EM 545,” and predecessor forms. • 2012
forward: Calculated annually by EIA by dividing the heat
content of steam coal and metallurgical coal exported by the
quantity exported. The average heat content of steam coal
is derived from receipts data from Form EIA-3, “Quarterly
Coal Consumption and Quality Report—Manufacturing and
Transformation/Processing Coal Plants and Commercial
and Institutional Users,” and Form EIA-923, “Power Plant
Operations Report.” The average heat content of metallur-
gical coal is derived from receipts data from Form EIA-5,
“Quarterly Coal Consumption and Quality Report—Coke
Plants.” Data for export quantities are from U.S. Department
of Commerce, U.S. Census Bureau, “Monthly Report EM
545.”
Coal Imports. • 1949–1963: Calculated annually by EIA
by dividing the heat content of coal imported by the
quantity imported. Data are from U.S. Department of
Commerce, U.S. Census Bureau, “Monthly Report IM
145,” and predecessor forms. • 1964–2011: Assumed by
EIA to be 25.000 million Btu per short ton. • 2012 forward:
Calculated annually by EIA by dividing the heat content of
coal imported (received) by the quantity imported
(received). Data are from Form EIA-3, “Quarterly Coal
Consumption and Quality Report—Manufacturing and
Transformation/Processing Coal Plants and Commercial and
Institutional Users”; Form EIA-5, “Quarterly Coal
Consumption and Quality Report—Coke Plants”; and Form
EIA-923, “Power Plant Operations Report.”
Coal Production. • 1949–2011: Calculated annually by
EIA by dividing the heat content of domestic coal
(excluding waste coal) received by the quantity received.
Data are from Form EIA-3, “Quarterly Coal Consumption
and Quality Report—Manufacturing and Transformation/
Processing Coal Plants and Commercial and Institutional
Users”; Form EIA-5, “Quarterly Coal Consumption and
Quality Report—Coke Plants”; Form EIA-923, “Power Plant
Operations Report”; and predecessor forms. • 2012
forward: Calculated annually by EIA by dividing the heat
content of domestic coal (excluding waste coal) received
and exported by the quantity received and exported. Data
are from Form EIA-3, “Quarterly Coal Consumption and
Quality
Report—Manufacturing
and
Transformation/Processing Coal Plants and Commercial
and Institutional Users”; Form EIA-5, “Quarterly Coal
Consumption and Quality Report—Coke Plants”; Form
EIA-923, “Power Plant Operations Report”; U.S. Department
of Commerce, U.S. Census Bureau, “Monthly Report EM
545”; and predecessor forms.
Waste Coal Supplied. • 1989–2000: Calculated annually
by EIA by dividing the heat content of waste coal consumed
by the quantity consumed. Data are from Form EIA-860B,
“Annual Electric Generator Report—Nonutility,” and prede-
cessor form. • 2001 forward: Calculated by EIA by dividing
the heat content of waste coal received (or consumed) by the
quantity received (or consumed). Receipts data are from
Form EIA-3, “Quarterly Coal Consumption and Quality
Report—Manufacturing and Transformation/Processing Coal
Plants and Commercial and Institutional Users,” and prede-
cessor form. Consumption data are from Form EIA-923,
“Power Plant Operations Report,” and predecessor forms.
Approximate Heat Rates for Electricity
Electricity Net Generation, Coal. • 2001 forward: Calcu-
lated annually by EIA by using fuel consumption and net
generation data reported on Form EIA-923, “Power Plant
Operations Report,” and predecessor forms. The computa-
tion includes data for all electric utilities and electricity-
only independent power producers using anthracite, bitumi-
nous coal, subbituminous coal, lignite, and beginning in
2002, waste coal and coal synfuel.
Electricity Net Generation, Natural Gas. • 2001
forward: Calculated annually by EIA by using fuel
consumption and net generation data reported on Form
EIA-923, “Power Plant Operations Report,” and predeces-
sor forms. The computation includes data for all electric
utilities and electricity-only independent power producers
using natural gas and supplemental gaseous fuels.
Electricity Net Generation, Noncombustible Renewable
Energy. There is no generally accepted practice for
measuring the thermal conversion rates for power plants
that generate electricity from hydro, geothermal, solar
thermal, photovoltaic, and wind energy sources. Therefore,
EIA calculates a rate factor that is equal to the annual
average heat rate factor for fossil-fueled power plants in the
198
U.S. Energy Information Administration / Monthly Energy Review April 2016
