Solar Energy Rebate Program
The focus of the Solar Energy Rebate Program, through the State's Renewable Energy Resources Program, is to encourage utilization of small-scale solar energy systems in Illinois.
 
Solar Energy Incentive Program
The focus of the Solar Energy Incentive Program, through the RERP, is to support the development and implementation of solar thermal and solar photovoltaic technologies in Illinois.
 
Renewable Energy Business Development Grant Program
The focus of the Renewable Energy Business Development Grant Program, through the RERP, is to support domestic renewable energy production through the development of renewable energy businesses and component manufacturers. Projects that develop and expand the renewable energy sector and corresponding supply chain while improving the economy of the State through new business development are being targeted. 
 
The Economic and Environmental Impacts of Clean Energy Development in Illinois
This study examines the economic, employment and environmental benefits that Illinois could realize by increasing investment in renewable energy and energy efficiency.
 
Emissions Impact Assessment of the Sustainable Energy Plan for Illinois
This study shows that the Energy Efficiency Portfolio Standard and Renewable Portfolio Standard contained in the Illinois Sustainable Energy Plan produce significant and measurable air quality benefits to Illinois and surrounding states.

Wind Speed Maps For Illinois
Compiled from data collected by Illinois Wind Program, National Weather Service, and Illinois State Water Survey prepared by Western Illinois University.  Maps show each season over three years at two different heights.