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Nicor Gas operates and maintains natural gas pipes, reads meters and distributes natural gas to certified marketers. Find information about how to Manage Your Account, Pricing and Rate Plans, Billing and Payment Options, Ways to Save, Energy Efficiency Programs, and Natural Gas Vehicles.
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Choosing natural gas is an environmentally responsible way to get the reliability and performance your business needs. Find out how to manage your commercial account, access billing and payments, find commercial rebates and savings specific to your industry.
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We're committed to providing natural gas safely and reliably. Find safety information here to learn what to do in an emergency, safety precautions, activities for kids, and why you should call 811 before you dig.
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Nicor Gas is committed to supporting the needs of our customers, promoting conservation and environmental stewardship, and creating economic opportunities for all in the communities we live, work and play.
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For six decades, Nicor Gas has been serving Illinois customers with clean, safe, reliable and affordable natural gas.
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We believe that affordable, reliable, safe and increasingly clean energy is the foundation for improving the lives of people and the communities we serve, driving economic equity and enabling progress for a better future.
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Celebrate a Decade of Energy Savings With Us!

For more than 10 years, the Nicor Gas Energy Efficiency Program has been committed to helping our customers understand that a few easy changes can provide a lifetime of energy savings for their homes and businesses. We look forward to celebrating many more years of savings with you!

Here are just a few of our successes:

178 million therms of natural gas saved

$206 million in customer incentives and rebates paid

1.9 million home and business natural gas efficiency projects supported

Save Money with Energy Efficiency

You deserve to save energy without sacrificing comfort. See how our free products and rebates for efficient equipment make it more affordable to upgrade, so you can stay comfortable year-round.

See How You Can Save

Free Weatherization for Qualifying Customers

Nicor Gas offers free weatherization for income-eligible customers in coordination with the Illinois Home Weatherization Assistance Program (IHWAP). Free measures and upgrades may include: