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Using & saving energy

In industry

More energy is consumed for industry and manufacturing than for any other purpose. What industries use more energy—refining, chemical, paper, or metal industries?

The United States is a highly industrialized country. In 2022, the industrial sector accounted for 35% of total U.S. end-use energy consumption and 33% of total U.S. energy consumption.1

Industry uses many energy sources

The U.S. industrial sector uses a variety of energy sources including:

Most industries purchase electricity from electric utilities or independent power producers. Some industrial facilities also generate electricity for use at their plants using fuels that they purchase or using residues from their industrial processes. For example, paper mills may burn purchased natural gas and black liquor produced in their mills for process heat and to generate electricity. Some manufacturers produce electricity with solar photovoltaic systems located on their properties. Some industrial facilities sell some of the electricity that they generate.

Industry uses fossil fuels and renewable energy sources for:

  • Heat in industrial processes and space heating in buildings
  • Boiler fuel to generate steam or hot water for process heating and generating electricity
  • Feedstocks (raw materials) to make products such as plastics and chemicals

The industrial sector uses electricity for operating industrial motors and machinery, lights, computers and office equipment, and equipment for facility heating, cooling, and ventilation.

Energy use by type of industry

Within the industrial sector, manufacturing accounts for the largest share of annual industrial energy consumption, generally followed by mining, construction, and agriculture. Mining includes extraction of minerals, nonmineral products such as stone and gravel, coal, oil, and natural gas. Agriculture includes farming, fishing, and forestry. Manufacturing is the physical, mechanical, or chemical transformation of materials or substances into new products. The U.S. Energy Information Administration (EIA) makes projections for energy consumption by these four major industrial activities in the Annual Energy Outlook, which include the types and amounts of energy use by type of industry and manufacturers.

  • The percentage shares of U.S. industrial energy consumption by the four major types of industries in the Annual Energy Outlook 2023 Reference case for 2022 are:
  • manufacturing76%
  • mining12%
  • construction7%
  • agriculture4%

The manufacturing industry categories in the AEO projections are generally consistent with the North American Industry Classification System (NAICS) used in the Manufacturing Energy Consumption Survey (MECS). EIA conducts the MECS every four years to collect detailed information on energy use and expenditures and other data by U.S. manufacturing establishments. According to MECS 2018, the combined energy use by six energy-intensive manufacturing subsectors—chemicals, petroleum and coal products, paper, primary metals, food, and nonmetallic minerals products—equaled 16.9 quadrillion Btu, or 87% of total manufacturing energy consumption. The three largest energy consuming manufacturing subsectors—chemicals, petroleum and coal products, and paper—combined consumed nearly 70% of total manufacturing energy use in 2018.

Manufacturing energy consumption includes fuel and nonfuel sources

Manufacturers consume two general types of energy sources—fuel and nonfuel. Fuel consumption is the use of combustible energy sources to produce heat and to generate electricity (which, by manufacturers, is mostly for their own use) and the use of electricity to operate equipment and associated manufacturing facilities. Nonfuel-energy sources are feedstocks (raw materials) that are used to make products. According to the 2018 MECS, fuel use accounted for about 68% and nonfuel-energy feedstocks accounted for about 32% of total first use of energy by U.S. manufacturers in 2018.2

Among manufacturers, the chemicals, petroleum and coal products, and primary metals subsectors are the main consumers of nonfuel-energy feedstocks. In 2018, chemical manufacturers accounted for about 70% of total nonfuel-energy feedstocks use by manufacturing and for 22% of total U.S. manufacturing sector fuel and nonfuel-energy feedstock use.

  • Manufacturing nonfuel-energy feedstock use by type, amounts in trillion Btu (TBtu), and percentage shares of total nonfuel-energy feedstock use in 2018:
  • Hydrocarbon gas liquids2,834 TBtu46%
  • natural gas958 TBtu16%
  • coal425 TBtu7%
  • other1,920 TBtu31%

Hydrocarbon gas liquids (HGLs) (excluding natural gasoline) accounted for 46% of total U.S. manufacturing feedstock use in 2018. HGLs are feedstocks for making plastics and chemicals. Natural gas, the next largest manufacturing nonfuel energy source, is a major feedstock for making fertilizer.

Coal accounted for 7% of the total manufacturing energy feedstock use in 2018, of which about 60% was used by primary metals manufacturers (mostly for making iron and steel), and the remainder was used by petroleum and coal products manufacturers. Other feedstocks included coke and breeze and petroleum products—residual and distillate fuel oils, asphalt/bitumen, lubricants, waxes, and petrochemicals.

1 Total U.S. energy consumption includes primary energy consumption and net electricity imports. Total energy consumption by the sector includes primary energy consumption, purchased electricity, and electrical system energy losses associated with purchased electricity. End-use energy consumption by the sector does not include electrical system energy losses.

2 Source: U.S. Energy Information Administration, Manufacturing Energy Consumption Survey 2018, Tables 1.2, 2.2, and 3.2, February 2021.