What Does It Cost to Run a Portable AC in Tennessee?
Running a portable ac in Tennessee costs about $29.58 a month — $359.90 a year — at the state's average rate of 14.94 ¢/kWh. That's roughly $105.51 a year less than a household paying the national average pays for the exact same portable ac. The estimate assumes a typical 1,100-watt portable ac running 6 hours/day, at the all-in average rate (delivery, fixed charges, and utility fees already included; locally billed taxes vary by area).
Key metrics
| Metric | Value |
|---|---|
| Average wattage assumption | 1,100 W |
| Typical usage assumption | 6 hours/day |
| Estimated monthly electricity use | 198.0 kWh |
| Estimated monthly cost | $29.58 |
| Estimated yearly cost | $359.90 |
Portable AC cost vs U.S. average
At the state average rate, a portable ac in Tennessee costs $8.67 less a month than it would at the U.S. average rate.
How much electricity does a portable ac use?
A portable ac draws roughly 700-1,400 W; we use 1,100 watts running 6 hours/day. That comes to 6.60 kWh a day — 198.0 kWh a month, or 2409.0 kWh over a year — using kWh = watts × hours ÷ 1000.
A portable unit is convenient, but it's usually the least efficient way to cool a room — it tends to use more electricity per degree than a window unit, and the gap widens the hotter it gets outside. Tennessee prices that energy at 14.94 ¢/kWh, against a 19.32 ¢/kWh national average.
Portable AC operating cost estimate in Tennessee
| Time period | Energy use | Cost |
|---|---|---|
| Per hour | 1.10 kWh | $0.16 |
| Per day | 6.60 kWh | $0.99 |
| Per month | 198.0 kWh | $29.58 |
| Per year | 2409.0 kWh | $359.90 |
These figures use the all-in average rate. Your actual bill can run higher when separately billed taxes, seasonal pricing, and fixed monthly fees apply.
What changes the cost the most?
Two things move this number: your state's rate, which you can't change, and how hard the appliance works, which you often can. For a portable ac, that mostly comes down to hose configuration, room size, daily runtime.
Using yours more lightly or heavily than our assumption? The state calculator and usage-cost pages below model your exact scenario at the same rate.
For calculator-style comparisons, use the Portable AC calculator in Tennessee to compare light, typical, and heavy usage profiles.
Comparison entry points
Browse related comparisons from the energy comparison hub:
City pages for selected metros in Tennessee
These city pages add local rate context for the same appliance assumptions. City values are estimates.
| City | City rate | Monthly estimate | Yearly estimate | More detail |
|---|---|---|---|---|
| Nashville | 15.24 ¢/kWh | $30.17 | $362.07 | City electricity context |
| Memphis | 15.24 ¢/kWh | $30.17 | $362.07 | City electricity context |
City electricity pages focus on local rate context. The table above uses the statewide average rate.
Related appliance cost pages for Tennessee
- Space Heater cost in Tennessee — Typical 750-1,500 W estimate with state-specific pricing
- Window AC cost in Tennessee — Typical 500-1,500 W estimate with state-specific pricing
- Central AC cost in Tennessee — Typical 2,000-5,000 W estimate with state-specific pricing
- Air Purifier cost in Tennessee — Typical 25-100 W estimate with state-specific pricing
Frequently asked questions
How much does it cost to run a portable ac in Tennessee?
At 6 hours/day and the state average rate of 14.94 ¢/kWh, you'd pay about $29.58 a month.
Does this estimate include delivery fees and taxes?
Yes — the all-in average rate already includes delivery, fixed charges, and utility fees; locally billed taxes vary by area.
Where else can I compare this appliance?
See the appliance comparison guide, or the Tennessee bill estimator for whole-household profiles.
State cost and bill pathways for Tennessee
- Average power price in Tennessee — What a kWh of electricity costs in Tennessee
- Tennessee electricity rates — Core authority page with statewide pricing context
- Electricity cost in Tennessee — State-level cost, affordability, and value overview
- Electricity cost in Nashville, Tennessee — City electricity page with methodology notes where city coverage is available
- Tennessee monthly electricity bill estimate — What a typical monthly bill looks like
- Electric bill estimator scenarios in Tennessee — Estimate your bill from your monthly usage
Historical and trend pages
- Historical electricity prices in Tennessee — Historical context and trend interpretation
- Electricity inflation in Tennessee — State electricity inflation analysis
- Tennessee electricity price volatility — Volatility and rate movement profile
Fixed-usage and calculator pathways
- Electricity cost for 100 kWh in Tennessee — Cost for this usage amount in the same state
- Electricity cost for 300 kWh in Tennessee — Cost for this usage amount in the same state
- Electricity cost for 500 kWh in Tennessee — Cost for this usage amount in the same state
- Custom usage calculator for Tennessee — Custom kWh and scenario cost calculation
Appliance and estimator pathways
- Refrigerator cost in Tennessee — Appliance operating-cost page for this state
- Refrigerator calculator in Tennessee — Calculator page for adjusting wattage and usage for this appliance
- Space Heater cost in Tennessee — Appliance operating-cost page for this state
- Space Heater calculator in Tennessee — Calculator page for adjusting wattage and usage for this appliance
- Window Ac cost in Tennessee — Appliance operating-cost page for this state
- Window Ac calculator in Tennessee — Calculator page for adjusting wattage and usage for this appliance
State comparison pathways for Tennessee
- Compare Tennessee with other states — State-to-state comparison hub
- Tennessee vs California electricity cost — Head-to-head comparison page
- Tennessee vs Florida electricity cost — Head-to-head comparison page
Discovery and navigation hubs
- Tennessee electricity hub — Guide to this state's electricity rate, usage, comparison, and tool pages
- Electricity cost scenario hub — Entry point for residential and industry scenario pages
- Tennessee electricity cost overview — State-level electricity cost page with rates and typical bill context
- Tennessee average electricity bill benchmark — Typical monthly bill estimate using a standard household usage assumption
- Tennessee electricity bill estimator — Household profile bill scenarios for this state
- Electricity usage hubs — Browse cost pages by common household usage tiers
Consumer electricity drivers
- Price drivers in Tennessee — Understand what influences state electricity prices
Source & Method
Source: U.S. Energy Information Administration (EIA) Retail Sales of Electricity. Updated: April 2026. Estimates use the EIA all-in average residential rate — energy, delivery, fixed charges, and utility fees together, not just the electricity itself. Fees are inside the rate, not an extra on top; how your own bill splits fixed versus per-kWh charges varies by utility. For what's inside the all-in rate, see hidden electricity fees; for how rates and estimates are defined, see the methodology hub.