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Energy Efficiency

The Illinois EPA Office of Energy encourages the use of energy efficient technologies, techniques, and services to accelerate a cost-effective, equitable transition to a decarbonized energy system in Illinois. The benefits of low-cost energy efficiency investments in residential and commercial buildings include:

  • Decreasing energy consumption and waste; 
  • Reducing pollution and greenhouse gas emissions;
  • Improving comfort;
  • Supporting the U.S. economy and trained workforce;
  • Increasing energy security; and 
  • Saving money.