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Early-release estimates from the 2010 MECS show that energy consumption in the manufacturing sector decreased between 2006 and 2010

MECS 2006-2010 — Release date: March 28, 2012

Energy consumption in the U.S. manufacturing sector fell from 21,098 trillion Btu (tBtu) in 2006 to 19,062 tBtu in 2010, a decline of almost 10 percent, based on preliminary estimates released from the 2010 Manufacturing Energy Consumption Survey (MECS). This decline continues the downward trend in manufacturing energy use since the 1998 MECS report.

consuption declining since 1998figure data

The decrease in energy consumption in the manufacturing sector was also evident for most individual energy sources (Table 1 and Figure 1). Only the biomass component of the “Other” category, which includes energy sources such as agricultural waste and wood chips increased slightly, though the increase is not statistically significant.

Preliminary estimates are now available from the 2010 MECS survey that show U.S. manufacturing consumption of energy for all purposes (Table 1). Consumption for all purposes is the measure that considers both fuel and nonfuel use together. It ensures that the energy content of the substance is counted only once by measuring it when it is first used by an establishment. EIA will release more detail in the fall, including estimates for specific manufacturing industries, size categories, and broad geographic regions.

Table 1.  2010 Preliminary estimates of first use of energy for all purposes (fuel and nonfuel), compared to previously available data for 2006
  Consumption (trillion Btu) Percent Change from 2006 *=Statistically Significant Change
Energy Source 2010 (Preliminary) 2006
Coal 1,307 1,433 -8.8% *
Natural Gas 5,803 5,911 -1.8%  
Net Electricity 2,490 2,851 -12.7% *
Purchases 2,574 2,894 -11.1% *
Transfers in 26 20 30.0% *
Onsite Generation from Noncombustible Renewable Energy 5 4 25.0% *
Sales and Transfers Offsite 113 67 68.7% *
Coke and Breeze 258 272 -5.1% *
Residual Fuel Oil 170 314 -45.9% *
Distillate Fuel Oil 198 143 38.5% *
Liquefied Petroleum Gases and Natural Gas Liquids 2,000 2,376 -15.8% *
Other 7,549 8,443 -10.6% *
Asphalt and Road Oil (a) 946 1,259 -24.9% *
Lubricants (a) 386 436 -11.5% *
Naphtha <401 Degrees (a) 422 608 -30.6% *
Other Oils ≥ 401 Degrees (a) 718 815 -11.9% *
Special Naphthas (a) 82 96 -14.6% *
Waxes (a) 28 37 -24.3% *
Miscellaneous Nonfuel Products (a) 164 148 10.8% *
Kerosene 35 30 16.7% *
Motor Gasoline 8 7 14.3%  
Crude Oil for Fuel 0 0    
Petroleum Coke 752 834 -9.8% *
Still Gas/Waste Gas 1,386 1,551 -10.6% *
Pulping Liquor or Black Liquor 909 850 6.9%  
Biomass Total 742 631 17.6%  
Agricultural Waste 41 22 86.4% *
Wood Harvested Directly from Trees 143 96 49.0%  
Wood Residues and Byproducts from Mill Processing 540 495 9.1%  
Wood-related and Paper-Related Refuse 18 17 5.9%  
Net Stream/Hot Water 581 855 -32.0% *
Miscellaneous 391 287 36.2% *
Shipments of Energy Sources Produced Onsite (b) 715 645 10.9% *
Total (c) 19,061 21,098 -9.7% *

(a) Source: Derived from data from Form EIA-810, Monthly Refinery Report. These nonenergy products are produced from feedstocks and raw material inputs used by the petroleum refining industry. The energy content of these products is included in 'Other' to account for their production. Because these are population estimates and are without sampling errors, any year-to-year differences are statistically significant.
(b) 'Shipments of Energy Sources Produced Onsite' are those shipments produced or transformed onsite from the nonfuel use of other energy sources. For example, at an establishment that processes coal to make coke for later use, the entire quantity of coal is counted as first use. Any onsite consumption of coke is not counted as first use because it would duplicate the coal use. If some of the coke is then sold to another establishment, then that second establishment will consider this coke to be a shipment of an offsite-produced energy source. Hence, the second establishment will count this coke as its first use, thereby resulting in double counting. In order to eliminate the double counting, the energy equivalent of the coke shipment must be subtracted from first use.
(c) 'Total' is the sum of all of the listed energy sources, including 'Other,' minus the shipments of energy sources produced onsite. It is the total amount of first use of energy for all (fuel and nonfuel) purposes.

consumption mix has changedfigure data

The relative shares of major categories of energy sources have changed only slightly since the 1991 MECS survey (Figure 2). However, some of these categorizations mask more specific changes that have occurred, for example, the decline of residual fuel oil as a process heating and boiler fuel and the increase of liquefied petroleum gases (LPG) as a raw material in the chemical industries. Coal used to make coke has also declined, which is commensurate with the decline in the use of the iron ore blast furnace in an integrated steel mill relative to the increased share of steel production from electric arc furnaces.

The overall decrease in manufacturing energy consumption from 2006 to 2010 mirrors the slowdown in manufacturing production during the same period, as measured by two different annual manufacturing output indexes. One is from the Federal Reserve Board (FRB)1, which is based on physical measures of production and the other from the Bureau of Economic Analysis (BEA)2, which is based on the monetary value of shipments collected from the Census Bureau (See Figure 3). However, manufacturing energy consumption and output indexes do not always move in the same direction: there are times when these two variables have moved in different directions, as was the case between 2002 and 2006. In fact, between 2002 and 2006, there was a 14 percent decrease in energy intensity, the ratio of a unit of energy consumption per unit of output. However, between 2006 and 2010, there was a net increase in energy intensity of 2 percent.

efficiency gainsfigure data

In general, manufacturing production strongly influences the level of energy consumption but so do changes in energy intensity. In turn, changes in overall manufacturing energy intensity are attributable to both changes in real energy efficiency, the amount of energy required to perform a service, and changes in the relative output levels of component industries. For example, as lower-intensity industries, such as computer chip manufacturing, grow at a faster rate than more energy-intensive manufacturing, such as steel making, the overall intensity of manufacturing will decrease even if no changes in energy intensity were observed in any of the individual industries. As more MECS detailed industry data are released in the fall, EIA will examine changes in energy efficiency more fully.

The 2010 early-release estimates are the first such data from the 2010 MECS. As survey data editing proceeds, it is possible that the estimates shown here will change.


1 Federal Reserve Board, Industrial Production and Capacity Utilization - G.17, http://www.federalreserve.gov/releases/G17/default.htm.

2 Bureau of Economic Analysis, Gross-Domestic-Product-(GDP)-by-Industry Data (Shipments), http://www.bea.gov/industry/xls/GDPbyInd_SHIP_NAICS_1998-2010.xls and http://www.bea.gov/industry/xls/GDPbyInd_SHIP_SIC.xls.