Sump Pump in Charleston — $7/yr to Run (14.6¢/kWh)
Your sump pump in Charleston costs about $1/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
$0.04
0.3 kWh/day
Monthly Cost
$0.61
4 kWh/mo
Annual Cost
$7
50 kWh/yr
Lifetime (10yr)
$73
energy only
Monthly Cost Breakdown in Charleston
| Period | kWh | Charleston Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 0.3 | $0.04 | $0.03 | +$0.00 |
| Weekly | 1.8 | $0.26 | $0.23 | +$0.03 |
| Monthly | 4.2 | $0.61 | $0.54 | +$0.07 |
| Quarterly | 12.5 | $1.82 | $1.63 | +$0.20 |
| Annual | 50.0 | $7.29 | $6.50 | +$0.79 |
Customize Your Sump Pump Cost
Adjust usage hours and electricity rate to calculate your exact cost in Charleston.
Daily
$0.04
Monthly
$0.61
Annual
$7
10-Year
$73
Energy Saving Tips for Sump Pump in Charleston
- ✓Charleston electricity rates are 12% above the national average — energy efficiency matters more here.
- ✓A smart Sump Pump with scheduling optimization can save ~$1/year at Charleston rates.
- ✓Test annually by pouring water in pit
- ✓Battery backup prevents flooding during outages
- ✓Clean inlet screen regularly
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
Water Heater (Tank Electric)
Water Heating · 4,500W
$719/yr
$59.91/mo
Heat Pump
HVAC · 2,400W
$560/yr
$46.69/mo
Sump Pump Cost in Other South Carolina Cities
| City | Rate | Annual Cost | vs Charleston |
|---|---|---|---|
| Charleston (current) | 14.6¢ | $7 | — |
| Columbia | 13.4¢ | $7 | $-1 |
| North Charleston | 13.6¢ | $7 | $-0 |
| Mount Pleasant | 13.0¢ | $7 | $-1 |
| Rock Hill | 11.7¢ | $6 | $-1 |
| Greenville | 15.0¢ | $8 | +$0 |
| Summerville | 14.4¢ | $7 | $-0 |
Sump Pump Energy Cost FAQ — Charleston, SC
Understanding Sump Pump 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 low-draw appliance like the Sump Pump (500W) at Charleston's rate of 14.6¢/kWh costs approximately $7 per year — $1 more than the national average of $7.
Charleston rates are 12% above the national average — a modest premium that adds $1 per year to Sump Pump operating costs. Over the appliance's 10-year lifespan, that's $8 in cumulative extra spending versus the national average.
With a cost of living index of 97, Charleston is near the national median. The Sump Pump's monthly cost of $0.61 represents a typical share of the average Charleston electric bill of $157/month. While no ENERGY STAR version is available, a smart Sump Pump with automated scheduling can reduce consumption by 15%, saving $1/year.
Charleston's moderate climate (avg 66.2°F) helps keep seasonal energy cost swings manageable for most appliances. A Sump Pump produces approximately 0.04 tons of CO2 annually at typical usage. Charleston residents can reduce this footprint by 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 Sump Pump in Charleston, SC?
At Charleston's average electricity rate of 14.6¢/kWh, a Sump Pump costs approximately $7 per year to run. That's about $0.61 per month with typical usage of 0.5 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 Sump Pump use per year?
A Sump Pump uses approximately 500 watts and consumes about 50 kWh per year with typical usage of 0.5 hours/day for 200 days/year.
Is a Sump Pump expensive to run in Charleston?
Compared to the national average cost of $7/year, running a Sump Pump in Charleston costs $1 more per year due to higher local electricity rates.
How can I reduce my Sump Pump energy cost in Charleston?
To reduce Sump Pump costs in Charleston: Test annually by pouring water in pit. Battery backup prevents flooding during outages. Consider using a smart plug to monitor and optimize usage. Also check with Duke Energy Carolinas for local energy efficiency rebates and programs.