Retail sales of electricity for transportation use is now available on Table 7.5 and the average retail price of electricity sold for transportation use is now available on Table 9.9.

1) Final 2003 monthly statistics for the supply and dispostion of crude oil and petroleum porducts, coordinated with EIA's Petroleum Supply Annual 2003 Volume 2, are included in Petroleum and summary data in Energy Overview and Energy Consumption by Sector.

2) All data in "Cost of Fossil-Fuel Receipts at Electric Generating Plants" (Table 9.10) are revised from cents per million Btu to dollars per million Btu and new columns for distillate fuel oil and petroleum coke are added to the table.

World annual petroleum consumption is revised for 1980 forward in Table 11.2.

“Electricity End Use,” Table 7.5, is redesigned to show retail sales on the “old basis” (residential, commercial, industrial, and other) and on the “new basis” (residential, commercial, industrial, and transportation).

A new column for "Other Liquids" is added to Table 7.4, "Stocks of Coal and Petroleum: Electric Power Sector" under the "Petroleum" spanner.

The first complete set of 2003 preliminary statistics for U.S. total energy consumption, production, and trade is provided in Energy Overview and Energy Consumption by Sector.

1) "Energy Consumption per Dollar of Gross Domestic Product" (Table 1.8) carries the gross domestic product (GDP) data rebased from chained 1996 dollars to chained 2000 dollars, and the "Energy Consumption per Dollar of GDP" series are recalculated.

2) "Motor Vehicle Mileage, Fuel Consumption, and Fuel Rates" (Table 1.9) includes the annual update (i.e., new 2002 data and revised 2001 data).

Final 2002 monthly statistics for the supply and disposition of crude oil and petroleum products, coordinated with EIA's Petroleum Supply Annual 2002 Volume 2, are included in Petroleum and summary data in Energy Overview and Energy Consumption by Sector.

Section 1, Energy Overview

• The "Energy Summary" table that previously appeared as Table 1.1 is discontinued. The remaining tables in the section are renumbered.
• Table 1.1, Energy Overview columns are reordered to show "Production" to "Consumption" (left to right) and to add a column for "Adjustments." "Net Imports" no longer shows on this table; those data appear on Table 1.4. Consumption data are revised 1985-2002; see Table 1.3 for additional information.
• Table 1.2, Energy Production has data revisions, including "Nuclear Electric Power" due to revised heat rates (see Table A6) and "Renewable Energy" (see Section 10).
• Table 1.3, Energy Consumption is revised due to changes in several components, including: "Nuclear Electric Power" due to revised heat rates (see Table A6); "Natural Gas" due to a change in the source for natural gas used by the electric power sector (see Table 4.4); coal (see Table 6.2); and renewable energy (see Table 10.1). Also, the calculation of electricity net imports, which is a component of total energy consumption, is revised; see Table 1.4 for more information.
• Table 1.4, Energy Net Imports includes revised data for electricity. EIA previously estimated the proportions of traded electricity from fossil fuels and hydropower (and applied the fossil-fuel steam-electric-plant heat rate to convert from kilowatthours to Btu) and from geothermal (and applied the heat rate for geothermal energy plants). EIA no longer has adequate data to estimate the proportions by source and is now applying an overall rate of 3,412 Btu per kilowatthour to all traded electricity.
• Table 1.8, Energy Consumption per Dollar of Gross Domestic Product consumption data are revised; see Table 1.3 for more information.

Section 2, Energy Consumption by Sector

• Energy consumption data are revised due to changes in several components; see Table 1.3 for more information.

Section 4, Natural Gas

• Table 4.1, Natural Gas Overview is redesigned with separate columns for "Imports" and "Exports" (replacing "Net Imports") and separate columns for "Withdrawals From Storage" and "Additions to Storage" (replacing "Net Withdrawals From Storage"). Also, "Consumption" data are revised for 1993 forward; see Table 4.4 and Appendix D for more information.
• Table 4.4, Natural Gas Consumption by Sector
is redesigned. Independent power producers' use of natural gas is moved from the industrial sector to a new electric power sector. Data for the new sector are derived from electricity data collection forms, replacing that supplied on natural gas forms. As a result, total consumption is revised from 1993-2002. Also, data are now shown for industrial sector consumption by combined-heat-and-power (CHP) plants and non-CHP plants. For more information, see Appendix D.

Section 6, Coal

• Table 6.1, Coal Overview is redesigned to replace "Stocks" with "Stock Change" and to add columns for "Waste Coal" and "Losses and Unaccounted for." Also, "Consumption" data are revised for 1989 forward. See Appendix D for more information.
• Table 6.2, Coal Consumption by Sector
is redesigned to show commercial sector and industrial sector combined-heat-and-power plant consumption separately from other consumption in each sector. For a discussion about these changes and other effects on historical data, see Appendix D. Residential and commercial data are revised due to new methodology---see Note 2 at end of Section 6 for more information.
• Table 6.3, Coal Stocks by Sector
is redesigned. Coal stocks, which were previously shown separately for "Electric Utilities" and "Other Power Producers," are now shown only combined as "Electric Power Sector."

Section 7, Electricity

• The electricity section is redesigned to incorporate improved statistics and provide more detailed data. The changes make the Monthly Energy Review (MER) electricity data and the fuel data in other sections of the report consistent, and bring the MER data in line with those in the Annual Energy Review (AER), which was redesigned in the AER 2001 release. MER tables now show electricity net generation by electric power, commercial, and industrial sectors. Consumption of combustible fuels is also shown by those sectors and further broken down into use for electricity generation only and use for electricity generation and useful thermal output at combined-heat-and-power (CHP) plants. For additional discussion of the data changes and their impacts, see Appendix D, "Estimating and Presenting Power Sector Fuel Use in EIA Publications and Analyses." Tables in the March report are related to those in the April report as follows:

Section 8, Nuclear Energy

• Table 8.1, Nuclear Energy Overview is redesigned to show "Total Operable Units," which was previously shown on Table 8.2, "Nuclear Generating Units." Table 8.2 has been deleted; annual data on this topic will continue to appear in the Energy Information Administration's Annual Energy Review.

Section 9, Energy Prices

• Table 9.10, Cost of Fossil-Fuel Receipts at Electric Generating Plants which previously showed quantity and cost of receipts, now shows cost of receipts only. Also, "Petroleum Total" and "All Fossil Fuels" averages for 1990-2000 are recalculated to incorporate the cost of petroleum coke, which had not been included previously. In addition, beginning with the January 2002 data, coverage is expanded from electric utilities only to include independent power producers and electric generating plants in the commercial and industrial sectors as well.
• Table 9.11, Natural Gas Prices is expanded to include percent-of-sector data, where available, for the residential and electric power sectors.

Section 10, Renewable Energy

• Data are revised in this section for several reasons, including:
1. Electricity net imports that are derived from hydroelectric power and geothermal energy are no longer included in the renewable energy consumption totals that are shown on Tables 10.1 and 10.2c. Those quantities continue to be included in total U.S. energy consumption as components of electricity net imports, with fuel sources unspecified (see Tables 1.3 and 2.6). The change results in a 0.1-to-0.5 quadrillion Btu drop in total renewable energy consumption from 1973 forward.
2. Wood and waste energy consumption data for 1989-2002 are revised; biomass data are now developed by aggregating individual power plant data for nonutilities instead of applying a generalized net generation figure.
3. Hydropower, solar, geothermal, and wind energy consumption data for 1989-2002 are revised as a result of a thorough review of historical nonutility electric plant data.

Section 11, International Petroleum

• Table 11.4a - 11.4e, "Nuclear Electric Gross Generation," are no longer included in the Monthly Energy Review. Annual data on this topic will continue to appear in the Energy Information Administration's Annual Energy Review.

Appendix A, Thermal Conversion Factors

• Table A3-A5, are revised to show heat content averages for the "Electric Power Sector" instead of for "Electric Utilities." Some other sector averages are recalculated to reflect adjustments in the sector definitions.

Appendix D

• "Estimating and Presenting Power Sector Fuel Use in EIA Publications and Analyses" is a new, temporary section in the Monthly Energy Review that describes and discusses the changes related to the electricity statistics that are incorporated into this month's release.

The first set of year 2002 preliminary statistics for U.S. total energy consumption, production, and trade is provided in Energy Overview and Energy Consumption by Sector.

1) "Motor Vehicle Mileage, Fuel Consumption, and Fuel Rates" Table 1.10 includes the annual update (i.e. revised 2000 data and new 2001 data).

2) Graphs are created using new software and are now displayed in color in the portable document format (PDF) file (MER).

Final 2001 monthly statistics for the supply and disposition of crude oil and petroleum products, coordinated with EIA's Petroleum Supply Annual 2001 Volume 2, are included in Petroleum and summary data in Energy Overview and Energy Consumption by Sector.

"Web Page" addresses are added (above the "Sources" line) at the bottom of each table and figure in the report to direct the reader to related data in electronic form, such as spreadsheets of the data that are shown in the tables and figures and links to related long-term annual series in the Annual Energy Review.

The first set of year 2001 preliminary statistics for U.S. total energy consumption, production, and trade is provided in Energy Overview and Energy Consumption by Sector.

A new series appears for "Active Well Service Rig Count." The new series is from Weatherford International, Inc., and it begins with July 2001 data.

1) Section 5, "Crude Oil and Natural Gas Resource Development," has several changes this month:

• "Wells Drilled by Type" and "Maximum U.S. Active Seismic Crew Counts" are added to Figure 5.1.
• "Crews Engaged in Seismic Exploration" time series, which ceased after 1993, are deleted from Table 5.1.
• "Onshore" and "Offshore" rotary rigs are reversed in order on Table 5.1 to align with the prsentation in new Table 5.3.
• A new table, Table 5.3, "Maximum U.S. Active Seismic Crew Counts," is added.

2) Coal types (anthracite, bituminous coal, and lignite) are no longer displayed on Table 7.7, "Consumption of Fossil Fuels To Generate Electricity at Electric Utilities."

3) Appendix E, "Renewable Energy," which was added to the "Monthly Energy Review" a year ago, is moved up to Section 10. The previous Section 10, International Energy, is renumbered to be Section 11.

1) Comprehensive updates are incorporated for (Natural Gas) for 1998 forward.

2) "Petroleum Consumption in OECD Courntries" (Table 10.2) has several improvements, including the addition of monthly and annual data for South Korea and annual data for the world.

3) "Petroleum Stocks in OECD Courntries" (Table 10.3) has several improvements, including the addition of data for South Korea.

1) "Motor Vehicle Mileage, Fuel Consumption, and Fuel Rates" (Table 1.10) includes the annual update (i.e., new 2000 data and revised 1999 data).

2) A new page of graphs on renewable energy consumption (Figure E1 (pdf)) is added.

Graphs in the Electricity section are redesigned to provide better coverage of the entire electric power sector.

Final 2000 monthly statistics for the supply and disposition of crude oil and petroleum products, coordinated with EIA's Petroleum Supply Annual 2000 Volume 2, are included in Petroleum and summary data in Energy Overview and Energy Consumption by Sector.

The first set of year 2000 preliminary statistics for U.S. total energy consumption, production, and trade is provided in Energy Overview and Energy Consumption by Sector.

1) A new Appendix E is introduced with detailed data on renewable energy.

2) The additional renewable energy data from Appendix E is incorporated into Monthly Energy Review summary tables, such as Energy Production by Source (Table 1.3), Energy Consumption by Source (Table 1.4), and Net Imports of Energy by Source (Table 1.5). The additional renewable energy data raise both U.S. total energy production and U.S. total energy consumption in 1999 by about 4 quadrillion British thermal units (Btu).

3) All tables in Section 2 (Energy Consumption) are redesigned to incorporate the additional quantities of renewable energy.

Comprehensive updates are incorporated for natural gas 1999 data and nonutility power producers' electricity 1999 data.

In the "Energy Summary" section, "Motor Vehicle Mileage, Fuel Consumption, and Fuel Rates" (Table 1.10) includes the annual update (i.e., new 1999 data and revised 1998 data).

1) Monthly Energy Review web pages are modified to add links to relevant Annual Energy Review (AER) tables, where appropriate. For analysts interested in extended time series, AER tables present annual data from 1949 forward, where available. (A note of caution: where data in the MER and AER differ (usually in the latest year or two), analysts should use the MER data since those are more current.)

2) "Other Power Producers" coal consumption data are shown for the first time for 1989-1991 and are revised for 1992-1996 in Table 6.2. The coal consumption changes affect total energy calculations (e.g., see Overview Table 1.4 for those years).

Monthly Energy Time Series (METS): With the August 2000 release of the Monthly Energy Review (MER), the Energy Information Administration announces a new facility to access long-term monthly time series that parallel the data series routinely released in the MER. Wherever possible, monthly time series from January 1973 forward are now available electronically through METS.

To reach the new time series, tap on any energy topic on the MER home page. METS connections are indicated for any MER data table that has long-term historical monthly data available.

METS replaces an EIA product called the Historical Monthly Energy Review (HMER), which was released in paper copy in September 1991 and updated and released again in August 1994.

1) Overview of U.S. Petroleum Trade (Table 1.8) is expanded to include imports from OPEC, imports from OPEC as a share of products supplied, and imports from OPEC as a share of total imports.

2) Coal Stocks (Table 6.3) is expanded to include estimated stocks held by "Other Power Producers" from January 1998 forward. The table is redesigned to present coverage of the entire electric power sector rather than of electric utilities only.

3) The wellhead price of natural gas (Table 9.11) now includes two additional months of forecast prices.

Nonutility power producers' 1999 revised monthly data and 2000 monthly data through April are now available for electricity net generation (Table 7.4), consumption of fossil fuels to generate electricity (Table 7.8), and stocks of coal and petroleum (Table 7.9).

Final 1999 monthly statistics for the supply and disposition of crude oil and petroleum products, coordinated with EIA's Petroleum Supply Annual 1999 Volume 2, are included in Petroleum and summary data in Sections 1 and 2.

Energy Consumption per Dollar of Gross Domestic Product is recalculated for the entire series 1973 forward to incorporate the revised gross domestic product series that was recently released by the U.S. Department of Commerce, Bureau of Economic Analysis.

1) In the "Energy Summary" section, "Motor Vehicle Mileage, Fuel Consumption, and Fuel Rates" (Table 1.10) expands and replaces "Passenger Car Efficiency." In addition to passenger car mileage, fuel consumption, and fuel rates on the old table, the expanded version provides similar statistics for two additional categories of vehicles---"Vans, Pickup Trucks, and Sport Utility Vehicles" and "Trucks"---and for all vehicles together under "All Motor Vehicles."

2) Nuclear Energy statistics are expanded from 1989 forward to cover all nuclear units in the entire electric power sector, including those that are nonutility facilities. The additional quantities of electricity net generation are also incorporated into consumption statistics in Overview Tables 1.1 through 1.4 and 1.9 and consumption data in Energy Consumption by Sector.

3) New thermal heat rates for modern motor gasoline that incorporate oxygenated and reformulated gasolines are used to develop petroleum and total energy statistics in British thermal units (Btu). Annual national consumption-weighted averages of oxygenated, reformulated, and conventional motor gasoline heat rates are applied for all months beginning in 1994, the first year for which consistent data are available. That is, the motor gasoline factor for converting data from barrels to Btu is no longer a constant value but is now an annual variable based on the quantity of each type of motor gasoline consumed each year. Implementation of the new heat rates impacts all petroleum and total energy consumption, imports, and exports data in Btu from 1994 forward. See Table A3 for heat rates.

4) Overview and Energy Consumption by Sector report the first set of statistics for the full year of 1999.

1) In the "Coal," "Energy Consumption," and "Overview" sections, consumption data are revised to incorporate coal used by "Other Power Producers" into the U.S. energy accounts for 1992 forward. The changes are summarized as follows: Table 6.2 is redesigned to present "End-Use Sectors" and an "Electric Power Sector," which includes "Other Power Producers" for the first time. Table 6.1 coal consumption is recalculated from 1992 forward to reflect the additional coal consumed by the other power producers. All data in the Energy Consumption by Sector section were recalculated for 1992 forward to reflect the incorporation of the additional coal. All consumption-related data in the Overview section (Tables 1.1, 1.2, 1.4, and 1.9) also were recalculated for 1992 forward.

2) The "Electricity" section includes an expansion of Table 7.5 to add nonutilty power producers data where available.

3) The data presented on nuclear electricity gross generation by region and country are reorganized. The contents of Tables 10.4d and 10.4e are switched to bring Eastern Europe in place right after Western Europe. The summary table, Table 10.4a, is revised similarly.

The Electricity section is extensively redesigned. New tables and figures present an improved overview of the entire industry and give better coverage of the rapidly expanding nonutility power producers. Detailed data are now available for net generation of electricity by energy source for the industry as a whole and separately for utilities and nonutilities. In addition, the consumption of fossil fuels to generate electricity and stocks of coal and petroleum are now summarized for the entire industry and are also presented separately for utilities and nonutilities. By table number, the changes are summarized as follows:

• Table 7.1 is new.
• Table 7.2 is new.
• Table 7.3 relates closely to old Table 7.1.
• Table 7.4 relates to old Table 7.5.
• Table 7.5 is the same as old Table 7.2.
• Table 7.6 relates to old Table 7.6.
• Table 7.7 relates closely to old Table 7.3.
• Table 7.8 relates to old Table 7.6.
• Table 7.9 relates to old Table 7.4.