Idaho vs Tennessee Electricity Rates (2026)
Idaho has 13.6% cheaper electricity than Tennessee. Idaho residents pay 11.15¢/kWh compared to 12.91¢/kWh in Tennessee, saving about $35.00/month on average.
Idaho
11.15¢
per kWh
$107/mo
Tennessee
12.91¢
per kWh
$142/mo
Detailed Rate Comparison
| Metric | Idaho | Tennessee | National Avg |
|---|---|---|---|
| Residential Rate | 11.15¢/kWh | 12.91¢/kWh | 17.22¢/kWh |
| Commercial Rate | 8.69¢/kWh | 11.38¢/kWh | - |
| Industrial Rate | 6.87¢/kWh | 7.33¢/kWh | - |
| Avg Monthly Bill | $107 | $142 | $134 |
| Renewable Energy | 73.0% | 13.0% | ~22% |
| Primary Source | Hydroelectric | Nuclear | - |
Appliance Running Costs: Idaho vs Tennessee
Monthly cost to run common household appliances in each state.
| Appliance | ID | TN | Savings |
|---|---|---|---|
| Air Purifier | $4.01 | $4.65 | ID saves $0.63 |
| Blender | $0.13 | $0.15 | ID saves $0.02 |
| CFL Bulb (13W) | $0.35 | $0.40 | ID saves $0.05 |
| Cable / Satellite Box | $2.81 | $3.25 | ID saves $0.44 |
| Ceiling Fan | $3.01 | $3.49 | ID saves $0.48 |
| Central Air Conditioner | $93.66 | $108.44 | ID saves $14.78 |
| Chest Freezer | $6.42 | $7.44 | ID saves $1.01 |
| Clothes Dryer (Electric) | $10.04 | $11.62 | ID saves $1.58 |
| Coffee Maker | $0.75 | $0.87 | ID saves $0.12 |
| Crypto Mining Rig | $120.42 | $139.43 | ID saves $19.01 |
| Dehumidifier | $12.04 | $13.94 | ID saves $1.90 |
| Desktop Computer | $5.35 | $6.20 | ID saves $0.84 |
| Dishwasher | $6.02 | $6.97 | ID saves $0.95 |
| Electric Baseboard Heater | $33.45 | $38.73 | ID saves $5.28 |
| Electric Fireplace | $18.73 | $21.69 | ID saves $2.96 |
Bottom Line: Idaho vs Tennessee
Idaho is the more affordable state for electricity, with rates 13.6% lower than Tennessee. An average household would save about $420.00/year by living in Idaho.
Idaho gets its electricity primarily from Hydroelectric with 73.0% renewable, while Tennessee relies on Nuclear with 13.0% renewable.
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Frequently Asked Questions
Is electricity cheaper in Idaho or Tennessee?
Electricity is cheaper in Idaho at 11.15¢/kWh compared to Tennessee at 12.91¢/kWh. That's a 13.6% difference, saving about $35.00/month on an average residential bill.
What is the average electricity bill in Idaho vs Tennessee?
The average monthly electricity bill is $107 in Idaho and $142 in Tennessee. The national average is $134.
Which state uses more renewable energy, Idaho or Tennessee?
Idaho has a higher renewable energy percentage at 73.0%, compared to 13.0% in Tennessee.
What are the main energy sources in Idaho and Tennessee?
Idaho primarily uses Hydroelectric, while Tennessee relies on Nuclear.
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Data verified March 2026 · Source: U.S. Energy Information Administration (EIA)