Tankless Water Heater (Electric) in Chattanooga — $405/yr to Run (12.3¢/kWh)
Your tankless water heater (electric) in Chattanooga costs about $34/month at 12.3¢/kWh. See daily, monthly, and yearly costs, plus tips to cut your bill.
Chattanooga, TN Electricity Rate
12.3¢/kWh
Utility: Nashville Electric Service
-5% vs national avg
National avg: 13.0¢/kWh
Daily Cost
$1.11
9.0 kWh/day
Monthly Cost
$33.73
274 kWh/mo
Annual Cost
$405
3,285 kWh/yr
Lifetime (20yr)
$8,094
energy only
Monthly Cost Breakdown in Chattanooga
| Period | kWh | Chattanooga Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 9.0 | $1.11 | $1.17 | $-0.06 |
| Weekly | 63.0 | $7.76 | $8.19 | $-0.43 |
| Monthly | 273.8 | $33.73 | $35.59 | $-1.86 |
| Quarterly | 821.3 | $101.18 | $106.76 | $-5.58 |
| Annual | 3285.0 | $404.71 | $427.05 | $-22.34 |
Customize Your Tankless Water Heater (Electric) Cost
Adjust usage hours and electricity rate to calculate your exact cost in Chattanooga.
Daily
$1.11
Monthly
$33.73
Annual
$405
20-Year
$8,094
Energy Saving Tips for Tankless Water Heater (Electric) in Chattanooga
- ✓Chattanooga has below-average electricity rates, but saving energy still reduces your carbon footprint.
- ✓An ENERGY STAR Tankless Water Heater (Electric) in Chattanooga saves ~$81/year compared to standard models.
- ✓A smart Tankless Water Heater (Electric) with scheduling optimization can save ~$61/year at Chattanooga rates.
- ✓Provides hot water on demand with no standby loss
- ✓Flush annually to remove scale
- ✓Requires dedicated electrical circuit
ENERGY STAR Savings: Upgrading to an ENERGY STAR Tankless Water Heater (Electric) in Chattanooga saves approximately $81/year at local rates — $1,619 over the appliance lifetime.
Highest-Cost Appliances in Chattanooga, TN
See which appliances cost the most to run at Chattanooga's 12.3¢/kWh electricity rate.
Level 2 EV Charger (240V)
Transportation · 7,200W
$1,597/yr
$133.06/mo
Electric Furnace
HVAC · 10,000W
$1,109/yr
$92.40/mo
Electric Tankless Water Heater
Water Heating · 18,000W
$809/yr
$67.45/mo
EV Charger (Level 2)
Garage · 7,200W
$798/yr
$66.53/mo
Boiler (Electric)
HVAC · 6,000W
$665/yr
$55.44/mo
Electric Water Heater (Tank)
Water Heating · 4,500W
$607/yr
$50.59/mo
Water Heater (Tank Electric)
Water Heating · 4,500W
$607/yr
$50.59/mo
Heat Pump
HVAC · 2,400W
$473/yr
$39.42/mo
Tankless Water Heater (Electric) Cost in Other Tennessee Cities
| City | Rate | Annual Cost | vs Chattanooga |
|---|---|---|---|
| Chattanooga (current) | 12.3¢ | $405 | — |
| Nashville | 12.0¢ | $393 | $-11 |
| Memphis | 13.1¢ | $430 | +$26 |
| Knoxville | 12.0¢ | $394 | $-11 |
| Clarksville | 11.3¢ | $373 | $-32 |
| Murfreesboro | 12.7¢ | $417 | +$12 |
| Franklin | 12.5¢ | $410 | +$6 |
| Johnson City | 11.9¢ | $391 | $-14 |
| Jackson | 9.4¢ | $310 | $-94 |
Tankless Water Heater (Electric) Energy Cost FAQ — Chattanooga, TN
Understanding Tankless Water Heater (Electric) Energy Costs in Chattanooga, TN
Chattanooga is a mid-sized Tennessee city where residential electricity rates from Nashville Electric Service are shaped by regional energy supply and local demand patterns. Running a high-draw appliance like the Tankless Water Heater (Electric) (18,000W) at Chattanooga's rate of 12.3¢/kWh costs approximately $405 per year — $22 less than the national average of $427.
Rates in Chattanooga are close to the national average, so the Tankless Water Heater (Electric)'s annual cost of $405 is broadly representative of what most US households pay. Over the 20-year expected lifespan, total energy cost reaches $8,094.
Chattanooga's cost of living index of 91 is below the national average, and electricity costs reflect that affordability. The Tankless Water Heater (Electric) adds $33.73/month to a typical bill of $132. Upgrading to an ENERGY STAR Tankless Water Heater (Electric) can cut energy use by up to 20%, saving approximately $81 per year at Chattanooga rates.
Chattanooga's moderate climate (avg 68.5°F) helps keep seasonal energy cost swings manageable for most appliances. A Tankless Water Heater (Electric) produces approximately 2.35 tons of CO2 annually at typical usage. Chattanooga residents can reduce this footprint by choosing an ENERGY STAR certified unit, optimizing usage patterns, or investing in solar — see our solar savings calculator for Chattanooga.
Compare All Energy Costs in Chattanooga
See energy costs for 168+ household appliances at Chattanooga's local electricity rate.