Electric Tankless Water Heater in Seattle — $762/yr to Run (11.6¢/kWh)
Your electric tankless water heater in Seattle costs about $64/month at 11.6¢/kWh. See daily, monthly, and yearly costs, plus tips to cut your bill.
Seattle, WA Electricity Rate
11.6¢/kWh
Utility: Seattle City Light
-11% vs national avg
National avg: 13.0¢/kWh
Daily Cost
$2.09
18.0 kWh/day
Monthly Cost
$63.51
548 kWh/mo
Annual Cost
$762
6,570 kWh/yr
Lifetime (20yr)
$15,242
energy only
Monthly Cost Breakdown in Seattle
| Period | kWh | Seattle Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 18.0 | $2.09 | $2.34 | $-0.25 |
| Weekly | 126.0 | $14.62 | $16.38 | $-1.76 |
| Monthly | 547.5 | $63.51 | $71.17 | $-7.66 |
| Quarterly | 1642.5 | $190.53 | $213.53 | $-23.00 |
| Annual | 6570.0 | $762.12 | $854.10 | $-91.98 |
Customize Your Electric Tankless Water Heater Cost
Adjust usage hours and electricity rate to calculate your exact cost in Seattle.
Daily
$2.09
Monthly
$63.51
Annual
$762
20-Year
$15,242
Energy Saving Tips for Electric Tankless Water Heater in Seattle
- ✓Seattle has below-average electricity rates, but saving energy still reduces your carbon footprint.
- ✓An ENERGY STAR Electric Tankless Water Heater in Seattle saves ~$183/year compared to standard models.
- ✓A smart Electric Tankless Water Heater with scheduling optimization can save ~$114/year at Seattle rates.
- ✓Install point-of-use units for remote fixtures
- ✓Size properly for peak demand
- ✓Consider electrical upgrade
ENERGY STAR Savings: Upgrading to an ENERGY STAR Electric Tankless Water Heater in Seattle saves approximately $183/year at local rates — $3,658 over the appliance lifetime.
Highest-Cost Appliances in Seattle, WA
See which appliances cost the most to run at Seattle's 11.6¢/kWh electricity rate.
Level 2 EV Charger (240V)
Transportation · 7,200W
$1,503/yr
$125.28/mo
Electric Furnace
HVAC · 10,000W
$1,044/yr
$87.00/mo
EV Charger (Level 2)
Garage · 7,200W
$752/yr
$62.64/mo
Boiler (Electric)
HVAC · 6,000W
$626/yr
$52.20/mo
Electric Water Heater (Tank)
Water Heating · 4,500W
$572/yr
$47.63/mo
Water Heater (Tank Electric)
Water Heating · 4,500W
$572/yr
$47.63/mo
Heat Pump
HVAC · 2,400W
$445/yr
$37.12/mo
Hot Tub / Spa
Pool & Spa · 3,000W
$418/yr
$34.80/mo
Electric Tankless Water Heater Cost in Other Washington Cities
Electric Tankless Water Heater Energy Cost FAQ — Seattle, WA
Understanding Electric Tankless Water Heater Energy Costs in Seattle, WA
In a major metro like Seattle, electricity demand is high and rates reflect the cost of maintaining infrastructure for 0.7 million residents. Running a high-draw appliance like the Electric Tankless Water Heater (18,000W) at Seattle's rate of 11.6¢/kWh costs approximately $762 per year — $92 less than the national average of $854.
Rates in Seattle are close to the national average, so the Electric Tankless Water Heater's annual cost of $762 is broadly representative of what most US households pay. Over the 20-year expected lifespan, total energy cost reaches $15,242.
With a cost of living index of 104, Seattle is near the national median. The Electric Tankless Water Heater's monthly cost of $63.51 represents a typical share of the average Seattle electric bill of $129/month. Upgrading to an ENERGY STAR Electric Tankless Water Heater can cut energy use by up to 24%, saving approximately $183 per year at Seattle rates.
Seattle's moderate climate (avg 49.4°F) helps keep seasonal energy cost swings manageable for most appliances. A Electric Tankless Water Heater produces approximately 2.1 tons of CO2 annually at typical usage. Seattle 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 Seattle.
Compare All Energy Costs in Seattle
See energy costs for 168+ household appliances at Seattle's local electricity rate.