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Industry Data

Statistical Highlights

EEI maintains comprehensive statistical data on the electric power industry and investor-owned electric companies. Below are quick statistical highlights providing an overview of the industry. For more detailed information, see Products and Services.



  • Total installed generating capacity in the United States was 1,176,185 megawatts as of December 31, 2015, a decrease of 0.1 percent from 2014.
  • The investor-owned electric company generating capacity decreased by 1.8 percent, and accounted for 35 percent of total installed capacity. 
  • Non-utility owned installed generating capacity grew from 504,387 MW in 2014 to 513,309 in 2015.


  • In 2015, total U.S. electricity generation was 4,087,381 gigawatt-hours (GWh)—a 0.2 percent decrease from 2014.    
  • U.S. investor-owned electric companies accounted for 1,489,472 GWh, or 36.4 percent, of total U.S. electricity generation. 
  • Electricity generation at non-utility-owned plants totaled 1,736,521 GWh and accounted for 42.5 percent of the total electricity generation in the United States.
  • Read more about electricity generation

Fuel Mix

2015 National Fuel Mix
  • Coal provided 33.2 percent of our nation's electricity.
  • Natural gas supplied 32.7 percent.
  • Nuclear energy produced 19.5 percent.
  • Hydropower provided 6.1 percent of the supply.
  • Other renewable resources, such as geothermal, solar, and wind, provided 7.3 percent.
  • Fuel oil provided 0.7 percent of the generation mix.
  • Other miscellaneous sources provided 0.5 percent.
  • Learn more about these diverse fuels.

Emission Reductions

  • As of 2015, industry CO2 emissions were nearly 21 percent below 2005 levels, driven in part by low natural gas prices, increased deployment of renewable generation and low load growth.
  • Since 1990, the industry has cut sulfur dioxide (SO2) emissions by 86 percent and nitrogen oxides (NOx) emissions by 79 percent.
  • EPA projects that power sector mercury emissions will be reduced by approximately 90 percent due to its Mercury and Air Toxics Standards (MATS) and other Clean Air Act regulations.
  • Read more about our industry's efforts to address climate issues.

Energy Efficiency

  • From 1989-2012, electric company efficiency programs saved 1,403 billion kilowatt-hours (kWh) of electricity.
  • In 2012 alone, electric company energy efficiency programs saved 124.6 billion kWh of electricity—or enough to power nearly 11.5 million average U.S. homes for one year.
  • Learn more about the electric power industry's energy-efficiency efforts.

Customers, Sales, and Revenues

  • In 2015, the average number of ultimate customers served by the electric powe industry totaled 148,588,993—a 0.8 percent increase from 2014.    
  • The average electricity use per customer was 25,066 kilowatt-hours (kWh).  
  • Total electric company revenues from sales to ultimate customers equaled $388 billion—a 1.3 percent decrease from 2014. 
  • The average revenue received per kWh sold was 10.42 cents.


  • In 2015, total energy operating revenues of investor-owned electric companies were $355 billion.
  • Consolidated holding company-level assets of investor-owned electric companies were $1,419 billion as of December 31, 2015.
  • Of these assets, $898 billion were net property in service.
  • Total market capitalization of U.S. investor-owned electric companies was $577 billion on December 31, 2015.
  • Read more financial statistics in EEI's Financial Review.


  • In 2014, investor-owned electric companies spent $19.5 billion on transmission investment, compared to $16.9 billion in 2013 (in nominal dollars), and are projected to spend $20.7 billion in 2015.
  • Investor-owned electric companies are planning to invest approximately $85 billion on transmission construction between 2015 and 2018 (in nominal dollars).  
  • Read more about the electricity transmission system.
Access Construction Expenditure Data from the investor-owned electric company sector.

Forecast Data

  • According to the Energy Information Administration's Annual Energy Outlook 2016, total electric power industry capability in the United States is forecast to increase a total of 12 percent from 2015 through 2040.  Coal capability is expected to decrease 10 percent, retiring nearly 40 gigawatts of capability, within the total electric power sector.  Renewable sources increase their capability by 31 percent over the period.
  • Electricity demand is projected to increase 19.7 percent from 2015 to 2040, an annual rate of 0.7 percent.​​