Nicor Gas serves customers in Illinois. This guide covers current rates, billing structure, common charges, and how to verify your bill is accurate.
Quick Facts
Service Area: Northern Illinois, excluding the city of Chicago and some suburbs.
Rate Range: 40¢–80¢/kWh
Standard Rate: ~44.3¢/kWh (Residential Service)
Rates Updated: February 2026
Current Rates
Nicor Gas residential rates range from 40¢–80¢/kWh depending on your rate plan. The standard Residential Service plan has an effective rate of ~44.3¢/kWh. Rates last updated February 2026.
Understanding Your Bill
Your Nicor Gas bill includes several components: base charges, energy charges, fuel adjustments, taxes, and fees.
Nicor Gas residential rates vary by rate plan, usage tier, and season. Your effective rate includes base charges, energy charges, fuel adjustments, and various fees. Use our free Sanity Check tool to see how your rate compares to other Nicor Gas customers.
Why is my Nicor Gas bill so high?
High Nicor Gas bills are often caused by seasonal usage changes (especially AC in summer or heating in winter), rate increases, estimated meter readings, or being on a suboptimal rate plan. Upload your bill to Utility Check for an independent verification of every line item.
How can I verify my Nicor Gas bill is correct?
Upload your Nicor Gas bill to Utility Check for independent, line-by-line verification. We recalculate your charges against Nicor Gas's published tariffs, check your rate plan, and flag any discrepancies. If everything checks out, you get confirmation and peace of mind.
Does Utility Check support Nicor Gas?
Yes. Utility Check fully supports Nicor Gas bill verification. We analyze your rate plan, verify billing math, check fuel adjustments, and compare your effective rate to published tariffs. Our service covers all major utilities across all 50 states.