Water Heater (Tank Electric) in Charleston — $719/yr to Run (14.6¢/kWh)
Your water heater (tank electric) in Charleston costs about $60/month at 14.6¢/kWh. See daily, monthly, and yearly costs, plus tips to cut your bill.
Charleston, SC Electricity Rate
14.6¢/kWh
Utility: Duke Energy Carolinas
+12% vs national avg
National avg: 13.0¢/kWh
Daily Cost
$1.97
13.5 kWh/day
Monthly Cost
$59.91
411 kWh/mo
Annual Cost
$719
4,928 kWh/yr
Lifetime (12yr)
$8,627
energy only
Monthly Cost Breakdown in Charleston
| Period | kWh | Charleston Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 13.5 | $1.97 | $1.76 | +$0.21 |
| Weekly | 94.5 | $13.79 | $12.29 | +$1.50 |
| Monthly | 410.6 | $59.91 | $53.38 | +$6.53 |
| Quarterly | 1231.9 | $179.73 | $160.14 | +$19.59 |
| Annual | 4927.5 | $718.92 | $640.58 | +$78.35 |
Customize Your Water Heater (Tank Electric) Cost
Adjust usage hours and electricity rate to calculate your exact cost in Charleston.
Daily
$1.97
Monthly
$59.91
Annual
$719
12-Year
$8,627
Energy Saving Tips for Water Heater (Tank Electric) in Charleston
- ✓Charleston electricity rates are 12% above the national average — energy efficiency matters more here.
- ✓An ENERGY STAR Water Heater (Tank Electric) in Charleston saves ~$NaN/year compared to standard models.
- ✓A smart Water Heater (Tank Electric) with scheduling optimization can save ~$36/year at Charleston rates.
- ✓Lower temperature to 120F
- ✓Insulate tank with blanket
- ✓Drain sediment twice yearly
ENERGY STAR Savings: Upgrading to an ENERGY STAR Water Heater (Tank Electric) in Charleston saves approximately $NaN/year at local rates — $NaN over the appliance lifetime.
Highest-Cost Appliances in Charleston, SC
See which appliances cost the most to run at Charleston's 14.6¢/kWh electricity rate.
Level 2 EV Charger (240V)
Transportation · 7,200W
$1,891/yr
$157.57/mo
Electric Furnace
HVAC · 10,000W
$1,313/yr
$109.42/mo
Electric Tankless Water Heater
Water Heating · 18,000W
$959/yr
$79.88/mo
EV Charger (Level 2)
Garage · 7,200W
$945/yr
$78.79/mo
Boiler (Electric)
HVAC · 6,000W
$788/yr
$65.66/mo
Electric Water Heater (Tank)
Water Heating · 4,500W
$719/yr
$59.91/mo
Heat Pump
HVAC · 2,400W
$560/yr
$46.69/mo
Hot Tub / Spa
Pool & Spa · 3,000W
$525/yr
$43.77/mo
Water Heater (Tank Electric) Cost in Other South Carolina Cities
| City | Rate | Annual Cost | vs Charleston |
|---|---|---|---|
| Charleston (current) | 14.6¢ | $719 | — |
| Columbia | 13.4¢ | $661 | $-58 |
| North Charleston | 13.6¢ | $670 | $-49 |
| Mount Pleasant | 13.0¢ | $641 | $-78 |
| Rock Hill | 11.7¢ | $574 | $-145 |
| Greenville | 15.0¢ | $741 | +$22 |
| Summerville | 14.4¢ | $712 | $-7 |
Water Heater (Tank Electric) Energy Cost FAQ — Charleston, SC
Understanding Water Heater (Tank Electric) Energy Costs in Charleston, SC
Charleston is a mid-sized South Carolina city where residential electricity rates from Duke Energy Carolinas are shaped by regional energy supply and local demand patterns. Running a high-draw appliance like the Water Heater (Tank Electric) (4,500W) at Charleston's rate of 14.6¢/kWh costs approximately $719 per year — $78 more than the national average of $641.
Charleston rates are 12% above the national average — a modest premium that adds $78 per year to Water Heater (Tank Electric) operating costs. Over the appliance's 12-year lifespan, that's $940 in cumulative extra spending versus the national average.
With a cost of living index of 97, Charleston is near the national median. The Water Heater (Tank Electric)'s monthly cost of $59.91 represents a typical share of the average Charleston electric bill of $157/month. Upgrading to an ENERGY STAR Water Heater (Tank Electric) can cut energy use by up to undefined%, saving approximately $NaN per year at Charleston rates.
Charleston's moderate climate (avg 66.2°F) helps keep seasonal energy cost swings manageable for most appliances. A Water Heater (Tank Electric) produces approximately 3.5 tons of CO2 annually at typical usage. Charleston 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 Charleston.
Compare All Energy Costs in Charleston
See energy costs for 178+ household appliances at Charleston's local electricity rate.
Frequently Asked Questions
How much does it cost to run a Water Heater (Tank Electric) in Charleston, SC?
At Charleston's average electricity rate of 14.6¢/kWh, a Water Heater (Tank Electric) costs approximately $719 per year to run. That's about $59.91 per month with typical usage of 3 hours per day.
What is the electricity rate in Charleston, SC?
The average residential electricity rate in Charleston, SC is 14.6¢/kWh, which is 12% above the national average of 13.0¢/kWh. The primary utility provider is Duke Energy Carolinas.
How much electricity does a Water Heater (Tank Electric) use per year?
A Water Heater (Tank Electric) uses approximately 4,500 watts and consumes about 4,928 kWh per year with typical usage of 3 hours/day for 365 days/year.
Is a Water Heater (Tank Electric) expensive to run in Charleston?
Compared to the national average cost of $641/year, running a Water Heater (Tank Electric) in Charleston costs $78 more per year due to higher local electricity rates.
How can I reduce my Water Heater (Tank Electric) energy cost in Charleston?
To reduce Water Heater (Tank Electric) costs in Charleston: Lower temperature to 120F. Insulate tank with blanket. Upgrading to an ENERGY STAR model saves up to undefined% on energy costs. Also check with Duke Energy Carolinas for local energy efficiency rebates and programs.