Illinois Solar Industry Data


Solar Energy Industries Association 2016 Data
  • There are currently more than 261 solar companies at work throughout the value chain in Illinois, employing 3,800 people.
  • In 2014, Illinois installed 6 MW of solar electric capacity, ranking it 28th nationally.
  • The 55 MW of solar energy currently installed in Illinois ranks the state 25th in the country in installed solar capacity.  There is enough solar energy installed in the state to power 8,000 homes.
  • In 2014, $16 million was invested on solar installations in Illinois.  This represents a 165% increase over the previous year, and is expected to grow again this year.
  • Installed solar photovoltaic system prices in the U.S. have dropped steadily -- by 6% from last year and 53% from 2010.

See SEIA's entire Illinois Solar Fact Sheet.

The Solar Foundation
  • Illinois ranks 12th in the nation in total solar employment with 3,800.
  • Ranks 33rd in the nation in solar resource at 4.42 kWh/m2/day.
  • Ranks 18th in the nation in number of solar powered homes with around 22,090 homes.

For additional data refer to The Solar Foundation Illinois page.

U.S. Energy Information Administration

Website with statistics and technical data about energy.  Shows where IL energy is derived, locations and names of power plants, and much more.

Illinois Installed Solar by County. December 5, 2015.
Past Data



Illinois State University Center for Renewable Energy


Economic Impact Potential of Solar Photovoltaics in Illinois

Authored by: David Loomis, Jin Jo, and Matt Aldeman


The study seeks to examine jobs and total economic impact of solar installation in Illinois.

  • Within the results it is concluded that about 2 GW of solar installation would provide around 26,000 jobs and 11 GW would provide about 131,000 construction phase jobs.
  • With the addition of 2 GW around 1,200 operation and maintenance jobs would be created.

General information from the report

  • There are three utility scale solar farms in operation in Illinois.
    • 10 MW Exelon City Solar in Chicago. 

    • 20 MW Grand Ridge Solar Farm near Streator.

    • 3 MW Rockford Solar Farm near Chicago-Rockford International Airport.


Technical Potential for Solar Photovoltaics in  Illinois (May 2013)

Authored by: Jin Jo, David Loomis, and Matt Aldeman


The report investigates the optimum installed capacity of Illinois grid connected solar PV systems.

  • It is determined that at the current 6% carve-out is less that what would be needed for 100% of the electricity produced to be utilized.
  • If the optimal level of PV was defined as the point where 100% of electricity generated is utilized the RPS carve-out needs to increase to 7.3%
    • This would meet about 1.8% of Illinois' electric load.
  • If the electricity produced by PV was allowed to be restricted at the same rate which conventional thermal plants use electricity for internal operation at 5.6%, the RPS carve-out could be increased to 29.8%.
    • At this rate solar would produce about 7.5% of Illinois' electric load.

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