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
| Metric | Colorado | Illinois | National Avg |
|---|---|---|---|
| Residential Rate | 15.56¢/kWh | 16.27¢/kWh | 17.22¢/kWh |
| Commercial Rate | 11.85¢/kWh | 11.38¢/kWh | - |
| Industrial Rate | 8.49¢/kWh | 8.14¢/kWh | - |
| Avg Monthly Bill | $115 | $115 | $134 |
| Renewable Energy | 30.0% | 13.0% | ~22% |
| Primary Source | Natural Gas | Nuclear | - |
Appliance Running Costs: Colorado vs Illinois
Monthly cost to run common household appliances in each state.
| Appliance | CO | IL | Savings |
|---|---|---|---|
| Air Purifier | $5.60 | $5.86 | CO saves $0.26 |
| Blender | $0.19 | $0.20 | CO saves $0.01 |
| CFL Bulb (13W) | $0.49 | $0.51 | CO saves $0.02 |
| Cable / Satellite Box | $3.92 | $4.10 | CO saves $0.18 |
| Ceiling Fan | $4.20 | $4.39 | CO saves $0.19 |
| Central Air Conditioner | $130.70 | $136.67 | CO saves $5.96 |
| Chest Freezer | $8.96 | $9.37 | CO saves $0.41 |
| Clothes Dryer (Electric) | $14.00 | $14.64 | CO saves $0.64 |
| Coffee Maker | $1.05 | $1.10 | CO saves $0.05 |
| Crypto Mining Rig | $168.05 | $175.72 | CO saves $7.67 |
| Dehumidifier | $16.80 | $17.57 | CO saves $0.77 |
| Desktop Computer | $7.47 | $7.81 | CO saves $0.34 |
| Dishwasher | $8.40 | $8.79 | CO saves $0.38 |
| Electric Baseboard Heater | $46.68 | $48.81 | CO saves $2.13 |
| Electric Fireplace | $26.14 | $27.33 | CO 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)