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.
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.
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.
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.
For more than 160 years, Nicor Gas has been serving Illinois customers with clean, safe, reliable and affordable natural gas.
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.
This page is the official notification of a Critical Day or an Operation Flow Order (OFO)
Nicor Gas OFO Cap Removal Notice – July 21, 2025