Smart Plug in Charleston — $1/yr to Run (14.6¢/kWh)
Your smart plug in Charleston costs about $0/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
$0.00
0.0 kWh/day
Monthly Cost
$0.11
1 kWh/mo
Annual Cost
$1
9 kWh/yr
Lifetime (5yr)
$6
energy only
Monthly Cost Breakdown in Charleston
| Period | kWh | Charleston Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 0.0 | $0.00 | $0.00 | +$0.00 |
| Weekly | 0.2 | $0.02 | $0.02 | +$0.00 |
| Monthly | 0.7 | $0.11 | $0.09 | +$0.01 |
| Quarterly | 2.2 | $0.32 | $0.28 | +$0.03 |
| Annual | 8.8 | $1.28 | $1.14 | +$0.14 |
Customize Your Smart Plug Cost
Adjust usage hours and electricity rate to calculate your exact cost in Charleston.
Daily
$0.00
Monthly
$0.11
Annual
$1
5-Year
$6
Energy Saving Tips for Smart Plug in Charleston
- ✓Charleston electricity rates are 12% above the national average — energy efficiency matters more here.
- ✓A smart Smart Plug with scheduling optimization can save ~$1/year at Charleston rates.
- ✓Use to eliminate phantom loads from appliances
- ✓Schedule lamps and holiday lights
- ✓Monitor energy usage of connected devices
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
Smart Plug Cost in Other South Carolina Cities
| City | Rate | Annual Cost | vs Charleston |
|---|---|---|---|
| Charleston (current) | 14.6¢ | $1 | — |
| Columbia | 13.4¢ | $1 | $-0 |
| North Charleston | 13.6¢ | $1 | $-0 |
| Mount Pleasant | 13.0¢ | $1 | $-0 |
| Rock Hill | 11.7¢ | $1 | $-0 |
| Greenville | 15.0¢ | $1 | +$0 |
| Summerville | 14.4¢ | $1 | $-0 |
Smart Plug Energy Cost FAQ — Charleston, SC
Understanding Smart Plug 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 Smart Plug (1W) at Charleston's rate of 14.6¢/kWh costs approximately $1 per year — $0 more than the national average of $1.
Charleston rates are 12% above the national average — a modest premium that adds $0 per year to Smart Plug operating costs. Over the appliance's 5-year lifespan, that's $1 in cumulative extra spending versus the national average.
With a cost of living index of 97, Charleston is near the national median. The Smart Plug's monthly cost of $0.11 represents a typical share of the average Charleston electric bill of $157/month. While no ENERGY STAR version is available, a smart Smart Plug with automated scheduling can reduce consumption by 100%, saving $1/year.
Charleston's moderate climate (avg 66.2°F) helps keep seasonal energy cost swings manageable for most appliances. A Smart Plug produces approximately 0.01 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 Smart Plug in Charleston, SC?
At Charleston's average electricity rate of 14.6¢/kWh, a Smart Plug costs approximately $1 per year to run. That's about $0.11 per month with typical usage of 24 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 Smart Plug use per year?
A Smart Plug uses approximately 1 watts and consumes about 9 kWh per year with typical usage of 24 hours/day for 365 days/year.
Is a Smart Plug expensive to run in Charleston?
Compared to the national average cost of $1/year, running a Smart Plug in Charleston costs $0 more per year due to higher local electricity rates.
How can I reduce my Smart Plug energy cost in Charleston?
To reduce Smart Plug costs in Charleston: Use to eliminate phantom loads from appliances. Schedule lamps and holiday lights. Consider using a smart plug to monitor and optimize usage. Also check with Duke Energy Carolinas for local energy efficiency rebates and programs.