Smartphone Charger in St. Louis — $3/yr to Run (13.1¢/kWh)
Your smartphone charger in St. Louis costs about $0/month at 13.1¢/kWh. See daily, monthly, and yearly costs, plus tips to cut your bill.
St. Louis, MO Electricity Rate
13.1¢/kWh
Utility: Ameren Missouri
+1% vs national avg
National avg: 13.0¢/kWh
Daily Cost
$0.01
0.1 kWh/day
Monthly Cost
$0.24
2 kWh/mo
Annual Cost
$3
22 kWh/yr
Lifetime (3yr)
$9
energy only
Monthly Cost Breakdown in St. Louis
| Period | kWh | St. Louis Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 0.1 | $0.01 | $0.01 | +$0.00 |
| Weekly | 0.4 | $0.06 | $0.05 | +$0.00 |
| Monthly | 1.8 | $0.24 | $0.24 | +$0.00 |
| Quarterly | 5.5 | $0.72 | $0.71 | +$0.01 |
| Annual | 21.9 | $2.87 | $2.85 | +$0.02 |
Customize Your Smartphone Charger Cost
Adjust usage hours and electricity rate to calculate your exact cost in St. Louis.
Daily
$0.01
Monthly
$0.24
Annual
$3
3-Year
$9
Energy Saving Tips for Smartphone Charger in St. Louis
- ✓St. Louis electricity rates are 1% above the national average — energy efficiency matters more here.
- ✓Unplug charger when not in use
- ✓Use original or certified chargers
- ✓Avoid overnight charging
Highest-Cost Appliances in St. Louis, MO
See which appliances cost the most to run at St. Louis's 13.1¢/kWh electricity rate.
Level 2 EV Charger (240V)
Transportation · 7,200W
$1,698/yr
$141.48/mo
Electric Furnace
HVAC · 10,000W
$1,179/yr
$98.25/mo
Electric Tankless Water Heater
Water Heating · 18,000W
$861/yr
$71.72/mo
EV Charger (Level 2)
Garage · 7,200W
$849/yr
$70.74/mo
Boiler (Electric)
HVAC · 6,000W
$707/yr
$58.95/mo
Electric Water Heater (Tank)
Water Heating · 4,500W
$646/yr
$53.79/mo
Water Heater (Tank Electric)
Water Heating · 4,500W
$646/yr
$53.79/mo
Heat Pump
HVAC · 2,400W
$503/yr
$41.92/mo
Smartphone Charger Cost in Other Missouri Cities
| City | Rate | Annual Cost | vs St. Louis |
|---|---|---|---|
| St. Louis (current) | 13.1¢ | $3 | — |
| Kansas City | 13.5¢ | $3 | +$0 |
| Springfield | 12.7¢ | $3 | $-0 |
| Columbia | 13.4¢ | $3 | +$0 |
| Independence | 13.9¢ | $3 | +$0 |
| Lee's Summit | 11.7¢ | $3 | $-0 |
| OFallon | 10.2¢ | $2 | $-1 |
| St. Joseph | 13.2¢ | $3 | +$0 |
| St. Charles | 13.3¢ | $3 | +$0 |
Smartphone Charger Energy Cost FAQ — St. Louis, MO
Understanding Smartphone Charger Energy Costs in St. Louis, MO
St. Louis is a mid-sized Missouri city where residential electricity rates from Ameren Missouri are shaped by regional energy supply and local demand patterns. Running a low-draw appliance like the Smartphone Charger (20W) at St. Louis's rate of 13.1¢/kWh costs approximately $3 per year — $0 more than the national average of $3.
St. Louis rates are 1% above the national average — a modest premium that adds $0 per year to Smartphone Charger operating costs. Over the appliance's 3-year lifespan, that's $0 in cumulative extra spending versus the national average.
With a cost of living index of 97, St. Louis is near the national median. The Smartphone Charger's monthly cost of $0.24 represents a typical share of the average St. Louis electric bill of $101/month. Since no ENERGY STAR or smart version is currently available for this appliance, reducing usage hours is the primary way to cut costs.
St. Louis's moderate climate (avg 47.8°F) helps keep seasonal energy cost swings manageable for most appliances. A Smartphone Charger produces approximately 0.02 tons of CO2 annually at typical usage. St. Louis residents can reduce this footprint by optimizing usage patterns, or investing in solar — see our solar savings calculator for St. Louis.
Compare All Energy Costs in St. Louis
See energy costs for 178+ household appliances at St. Louis's local electricity rate.
Frequently Asked Questions
How much does it cost to run a Smartphone Charger in St. Louis, MO?
At St. Louis's average electricity rate of 13.1¢/kWh, a Smartphone Charger costs approximately $3 per year to run. That's about $0.24 per month with typical usage of 3 hours per day.
What is the electricity rate in St. Louis, MO?
The average residential electricity rate in St. Louis, MO is 13.1¢/kWh, which is 1% above the national average of 13.0¢/kWh. The primary utility provider is Ameren Missouri.
How much electricity does a Smartphone Charger use per year?
A Smartphone Charger uses approximately 20 watts and consumes about 22 kWh per year with typical usage of 3 hours/day for 365 days/year.
Is a Smartphone Charger expensive to run in St. Louis?
Compared to the national average cost of $3/year, running a Smartphone Charger in St. Louis costs $0 more per year due to higher local electricity rates.
How can I reduce my Smartphone Charger energy cost in St. Louis?
To reduce Smartphone Charger costs in St. Louis: Unplug charger when not in use. Use original or certified chargers. Consider using a smart plug to monitor and optimize usage. Also check with Ameren Missouri for local energy efficiency rebates and programs.