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Colorado vs Illinois Electricity Rates (2026)

Colorado has 4.4% cheaper electricity than Illinois. Colorado residents pay 15.56¢/kWh compared to 16.27¢/kWh in Illinois, saving about $0.00/month on average.

Colorado

15.56¢

per kWh

$115/mo

Illinois

16.27¢

per kWh

$115/mo

Detailed Rate Comparison

MetricColoradoIllinoisNational Avg
Residential Rate15.56¢/kWh16.27¢/kWh17.22¢/kWh
Commercial Rate11.85¢/kWh11.38¢/kWh-
Industrial Rate8.49¢/kWh8.14¢/kWh-
Avg Monthly Bill$115$115$134
Renewable Energy30.0%13.0%~22%
Primary SourceNatural GasNuclear-

Appliance Running Costs: Colorado vs Illinois

Monthly cost to run common household appliances in each state.

ApplianceCOILSavings
Air Purifier$5.60$5.86CO saves $0.26
Blender$0.19$0.20CO saves $0.01
CFL Bulb (13W)$0.49$0.51CO saves $0.02
Cable / Satellite Box$3.92$4.10CO saves $0.18
Ceiling Fan$4.20$4.39CO saves $0.19
Central Air Conditioner$130.70$136.67CO saves $5.96
Chest Freezer$8.96$9.37CO saves $0.41
Clothes Dryer (Electric)$14.00$14.64CO saves $0.64
Coffee Maker$1.05$1.10CO saves $0.05
Crypto Mining Rig$168.05$175.72CO saves $7.67
Dehumidifier$16.80$17.57CO saves $0.77
Desktop Computer$7.47$7.81CO saves $0.34
Dishwasher$8.40$8.79CO saves $0.38
Electric Baseboard Heater$46.68$48.81CO saves $2.13
Electric Fireplace$26.14$27.33CO saves $1.19

Bottom Line: Colorado vs Illinois

Colorado is the more affordable state for electricity, with rates 4.4% lower than Illinois. An average household would save about $0.00/year by living in Colorado.

Colorado gets its electricity primarily from Natural Gas with 30.0% renewable, while Illinois relies on Nuclear with 13.0% renewable.

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Frequently Asked Questions

Is electricity cheaper in Colorado or Illinois?

Electricity is cheaper in Colorado at 15.56¢/kWh compared to Illinois at 16.27¢/kWh. That's a 4.4% difference, saving about $0.00/month on an average residential bill.

What is the average electricity bill in Colorado vs Illinois?

The average monthly electricity bill is $115 in Colorado and $115 in Illinois. The national average is $134.

Which state uses more renewable energy, Colorado or Illinois?

Colorado has a higher renewable energy percentage at 30.0%, compared to 13.0% in Illinois.

What are the main energy sources in Colorado and Illinois?

Colorado primarily uses Natural Gas, while Illinois relies on Nuclear.

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Data verified March 2026 · Source: U.S. Energy Information Administration (EIA)