Reference annual cost
$185
$15 average per month · 1,175 kWh/year
ArcticSoak Score 63/100
Modeled planning range$95–$331
Peak monthJuly
Electricity input15.8¢/kWh
Vs. indexed-city median3% below
Scenario range
One city, three plausible setups
These are sensitivity scenarios—not a confidence interval. The reference setup is the ranking standard.
| Setup | Annual energy | Monthly average | Annual cost |
|---|---|---|---|
| Efficient insulated | 601 kWh | $8/mo | $95/yr |
| Reference consumer setup | 1,175 kWh | $15/mo | $185/yr |
| Lightly insulated / exposed | 2,100 kWh | $28/mo | $331/yr |
What colder targets change
Lower settings increase positive temperature degree-hours and chiller runtime. The same reference configuration is held constant.
| Target | Reference cost |
|---|---|
| 55°F | $170/year |
| 50°F | $185/year |
| 45°F | $201/year |
| 39°F | $222/year |
Data provenance
- Climate
- NOAA 1991–2020 U.S. Climate Normals
- Station
- CHARLESTON CITY, SC US (USW00013782)
- Electricity
- U.S. EIA residential average retail price, 2026-08; state-level input
- Model
- ArcticSoak 2.0.0; generated 2026-10-26T18:40:35+00:00
Reference scenario
Monthly climate and cost profile
Daily low/high normals become positive cooling degree-hours; provisional pages use approximate profiles until NOAA retrieval succeeds.
| Month | Normal low–high | Energy | Cost |
|---|---|---|---|
| January | 44–58°F | 72 kWh | $11 |
| February | 46–60°F | 67 kWh | $11 |
| March | 52–66°F | 82 kWh | $13 |
| April | 60–72°F | 92 kWh | $15 |
| May | 68–79°F | 110 kWh | $17 |
| June | 74–84°F | 119 kWh | $19 |
| July | 77–88°F | 131 kWh | $21 |
| August | 76–86°F | 128 kWh | $20 |
| September | 72–83°F | 115 kWh | $18 |
| October | 63–76°F | 101 kWh | $16 |
| November | 53–67°F | 82 kWh | $13 |
| December | 47–61°F | 75 kWh | $12 |
Cite this page
ArcticSoak. “Cold Plunge Cost in Charleston, SC.” Model 2.0.0, dataset 2026-10-26. Accessed [date]. https://arcticsoak.com/cities/charleston-sc/
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