Tankless Water Heater (Electric) in Port St. Lucie — $509/yr to Run (15.5¢/kWh)
Your tankless water heater (electric) in Port St. Lucie costs about $42/month at 15.5¢/kWh. See daily, monthly, and yearly costs, plus tips to cut your bill.
Port St. Lucie, FL Electricity Rate
15.5¢/kWh
Utility: Florida Power & Light
+19% vs national avg
National avg: 13.0¢/kWh
Daily Cost
$1.40
9.0 kWh/day
Monthly Cost
$42.43
274 kWh/mo
Annual Cost
$509
3,285 kWh/yr
Lifetime (20yr)
$10,184
energy only
Monthly Cost Breakdown in Port St. Lucie
| Period | kWh | Port St. Lucie Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 9.0 | $1.40 | $1.17 | +$0.23 |
| Weekly | 63.0 | $9.77 | $8.19 | +$1.58 |
| Monthly | 273.8 | $42.43 | $35.59 | +$6.84 |
| Quarterly | 821.3 | $127.29 | $106.76 | +$20.53 |
| Annual | 3285.0 | $509.18 | $427.05 | +$82.13 |
Customize Your Tankless Water Heater (Electric) Cost
Adjust usage hours and electricity rate to calculate your exact cost in Port St. Lucie.
Daily
$1.40
Monthly
$42.43
Annual
$509
20-Year
$10,184
Energy Saving Tips for Tankless Water Heater (Electric) in Port St. Lucie
- ✓Port St. Lucie electricity rates are 19% above the national average — energy efficiency matters more here.
- ✓An ENERGY STAR Tankless Water Heater (Electric) in Port St. Lucie saves ~$102/year compared to standard models.
- ✓A smart Tankless Water Heater (Electric) with scheduling optimization can save ~$76/year at Port St. Lucie rates.
- ✓Provides hot water on demand with no standby loss
- ✓Flush annually to remove scale
- ✓Requires dedicated electrical circuit
ENERGY STAR Savings: Upgrading to an ENERGY STAR Tankless Water Heater (Electric) in Port St. Lucie saves approximately $102/year at local rates — $2,037 over the appliance lifetime.
Highest-Cost Appliances in Port St. Lucie, FL
See which appliances cost the most to run at Port St. Lucie's 15.5¢/kWh electricity rate.
Level 2 EV Charger (240V)
Transportation · 7,200W
$2,009/yr
$167.40/mo
Electric Furnace
HVAC · 10,000W
$1,395/yr
$116.25/mo
Electric Tankless Water Heater
Water Heating · 18,000W
$1,018/yr
$84.86/mo
EV Charger (Level 2)
Garage · 7,200W
$1,004/yr
$83.70/mo
Boiler (Electric)
HVAC · 6,000W
$837/yr
$69.75/mo
Electric Water Heater (Tank)
Water Heating · 4,500W
$764/yr
$63.65/mo
Water Heater (Tank Electric)
Water Heating · 4,500W
$764/yr
$63.65/mo
Heat Pump
HVAC · 2,400W
$595/yr
$49.60/mo
Tankless Water Heater (Electric) Cost in Other Florida Cities
| City | Rate | Annual Cost | vs Port St. Lucie |
|---|---|---|---|
| Port St. Lucie (current) | 15.5¢ | $509 | — |
| Jacksonville | 14.3¢ | $471 | $-38 |
| Miami | 14.7¢ | $482 | $-27 |
| Tampa | 14.4¢ | $475 | $-34 |
| Orlando | 13.6¢ | $447 | $-62 |
| St. Petersburg | 13.0¢ | $426 | $-83 |
| Hialeah | 13.1¢ | $429 | $-80 |
| Tallahassee | 14.6¢ | $479 | $-30 |
| Cape Coral | 13.7¢ | $450 | $-59 |
Tankless Water Heater (Electric) Energy Cost FAQ — Port St. Lucie, FL
Understanding Tankless Water Heater (Electric) Energy Costs in Port St. Lucie, FL
Port St. Lucie is a mid-sized Florida city where residential electricity rates from Florida Power & Light are shaped by regional energy supply and local demand patterns. Running a high-draw appliance like the Tankless Water Heater (Electric) (18,000W) at Port St. Lucie's rate of 15.5¢/kWh costs approximately $509 per year — $82 more than the national average of $427.
Port St. Lucie rates are 19% above the national average — a modest premium that adds $82 per year to Tankless Water Heater (Electric) operating costs. Over the appliance's 20-year lifespan, that's $1,643 in cumulative extra spending versus the national average.
With a cost of living index of 100, Port St. Lucie is near the national median. The Tankless Water Heater (Electric)'s monthly cost of $42.43 represents a typical share of the average Port St. Lucie electric bill of $164/month. Upgrading to an ENERGY STAR Tankless Water Heater (Electric) can cut energy use by up to 20%, saving approximately $102 per year at Port St. Lucie rates.
Port St. Lucie's moderate climate (avg 59.5°F) helps keep seasonal energy cost swings manageable for most appliances. A Tankless Water Heater (Electric) produces approximately 2.35 tons of CO2 annually at typical usage. Port St. Lucie 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 Port St. Lucie.
Compare All Energy Costs in Port St. Lucie
See energy costs for 168+ household appliances at Port St. Lucie's local electricity rate.