Tankless Water Heater (Electric) in Bellevue — $364/yr to Run (11.1¢/kWh)
Your tankless water heater (electric) in Bellevue costs about $30/month at 11.1¢/kWh. See daily, monthly, and yearly costs, plus tips to cut your bill.
Bellevue, WA Electricity Rate
11.1¢/kWh
Utility: Puget Sound Energy
-15% vs national avg
National avg: 13.0¢/kWh
Daily Cost
$1.00
9.0 kWh/day
Monthly Cost
$30.36
274 kWh/mo
Annual Cost
$364
3,285 kWh/yr
Lifetime (20yr)
$7,286
energy only
Monthly Cost Breakdown in Bellevue
| Period | kWh | Bellevue Cost | National Avg | Difference |
|---|---|---|---|---|
| Daily | 9.0 | $1.00 | $1.17 | $-0.17 |
| Weekly | 63.0 | $6.99 | $8.19 | $-1.20 |
| Monthly | 273.8 | $30.36 | $35.59 | $-5.23 |
| Quarterly | 821.3 | $91.08 | $106.76 | $-15.69 |
| Annual | 3285.0 | $364.31 | $427.05 | $-62.74 |
Customize Your Tankless Water Heater (Electric) Cost
Adjust usage hours and electricity rate to calculate your exact cost in Bellevue.
Daily
$1.00
Monthly
$30.36
Annual
$364
20-Year
$7,286
Energy Saving Tips for Tankless Water Heater (Electric) in Bellevue
- ✓Bellevue has below-average electricity rates, but saving energy still reduces your carbon footprint.
- ✓An ENERGY STAR Tankless Water Heater (Electric) in Bellevue saves ~$73/year compared to standard models.
- ✓A smart Tankless Water Heater (Electric) with scheduling optimization can save ~$55/year at Bellevue 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 Bellevue saves approximately $73/year at local rates — $1,457 over the appliance lifetime.
Highest-Cost Appliances in Bellevue, WA
See which appliances cost the most to run at Bellevue's 11.1¢/kWh electricity rate.
Level 2 EV Charger (240V)
Transportation · 7,200W
$1,437/yr
$119.77/mo
Electric Furnace
HVAC · 10,000W
$998/yr
$83.17/mo
Electric Tankless Water Heater
Water Heating · 18,000W
$729/yr
$60.72/mo
EV Charger (Level 2)
Garage · 7,200W
$719/yr
$59.89/mo
Boiler (Electric)
HVAC · 6,000W
$599/yr
$49.91/mo
Electric Water Heater (Tank)
Water Heating · 4,500W
$546/yr
$45.54/mo
Water Heater (Tank Electric)
Water Heating · 4,500W
$546/yr
$45.54/mo
Heat Pump
HVAC · 2,400W
$426/yr
$35.49/mo
Tankless Water Heater (Electric) Cost in Other Washington Cities
Methodology & Energy Data Sources for Bellevue
How we calculate tankless water heater (electric) energy costs in Bellevue, WA: Cost estimates use the standard formula: Annual Cost = (Wattage ÷ 1000) × Hours per Day × Days per Year × Local kWh Rate. We model regional electricity rate variation using EIA monthly data, which captures rate differences between investor-owned utilities, municipal providers, and rural electric cooperatives.
- Appliance wattage sourced from ENERGY STAR product database, manufacturer spec sheets, and DOE residential appliance test data.
- Local kWh rate for Bellevue reflects Washington averages from EIA Form 861 (utility sales data). Rates vary by season (typically 10-20% summer premium) and time-of-use in many Washington utilities.
- Usage patterns derived from RECS (Residential Energy Consumption Survey), EIA's official survey of US household energy use.
- Carbon footprint calculated using EPA eGRID emissions factors specific to your regional grid mix in Washington.
Authoritative US energy data sources:
- EIA Electric Power Monthly — official US electricity rate data by state
- EIA Residential Energy Consumption Survey (RECS) — household appliance usage patterns
- ENERGY STAR Product Finder — efficiency ratings for tankless water heater (electric)s
- DOE Energy Saver — Electricity — official tips and appliance comparison
- EPA eGRID — Regional Emissions — carbon intensity by grid region
- EIA State Energy Profiles — Washington — generation mix, prices, and consumption
Disclaimer: Energy costs are estimates based on average appliance usage and Washington state-level kWh rates. Your actual costs depend on your specific utility provider, rate plan (flat, time-of-use, demand), local fees, taxes, and renewable energy credits. Check your utility bill for exact rates. For energy efficiency upgrades, consult your local utility's rebate programs and federal tax credits via ENERGY STAR Federal Tax Credits.
Reviewed by Brazora Monk · Last updated 2026 · EIA data current as of latest monthly release
Find Your Utility, Rate Plan & Incentives in Bellevue
The Washington state-average kWh rate shown above is a baseline — your actual cost depends on your specific utility provider, rate plan, and time-of-use schedule. Plus you may be missing rebates that pay for ENERGY STAR replacements:
Each utility has its own rate plans (flat, TOU, demand):
- • EIA — Find Your Utility (by ZIP)
- • EIA Washington State Profile
- • Time-of-use can save 20-40% if you shift heavy use to off-peak
Inflation Reduction Act provides ongoing credits:
- • ENERGY STAR Federal Tax Credits
- • 30% on solar/battery storage through 2032
- • Up to $2,000 heat pump credit annually
- • DOE — Federal Rebate Programs
State + utility-specific rebates stack with federal:
- • DSIRE — Washington Incentive Database
- • DOE State Energy Program
- • Many utilities offer $50-500 rebates on ENERGY STAR appliances
Replace efficient = save 25-50% kWh:
NABCEP-certified installers for solar/battery: NABCEP Certified Professionals Directory. Required for many state incentives.
Tankless Water Heater (Electric) Energy Cost FAQ — Bellevue, WA
Understanding Tankless Water Heater (Electric) Energy Costs in Bellevue, WA
Bellevue is a mid-sized Washington city where residential electricity rates from Puget Sound Energy are shaped by regional energy supply and local demand patterns. Running a high-draw appliance like the Tankless Water Heater (Electric) (18,000W) at Bellevue's rate of 11.1¢/kWh costs approximately $364 per year — $63 less than the national average of $427.
Rates in Bellevue are close to the national average, so the Tankless Water Heater (Electric)'s annual cost of $364 is broadly representative of what most US households pay. Over the 20-year expected lifespan, total energy cost reaches $7,286.
With a cost of living index of 105, Bellevue is near the national median. The Tankless Water Heater (Electric)'s monthly cost of $30.36 represents a typical share of the average Bellevue electric bill of $123/month. Upgrading to an ENERGY STAR Tankless Water Heater (Electric) can cut energy use by up to 20%, saving approximately $73 per year at Bellevue rates.
Bellevue's moderate climate (avg 47.5°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. Bellevue 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 Bellevue.
Compare All Energy Costs in Bellevue
See energy costs for 178+ household appliances at Bellevue's local electricity rate.
Frequently Asked Questions
How much does it cost to run a Tankless Water Heater (Electric) in Bellevue, WA?
At Bellevue's average electricity rate of 11.1¢/kWh, a Tankless Water Heater (Electric) costs approximately $364 per year to run. That's about $30.36 per month with typical usage of 0.5 hours per day.
What is the electricity rate in Bellevue, WA?
The average residential electricity rate in Bellevue, WA is 11.1¢/kWh, which is 15% below the national average of 13.0¢/kWh. The primary utility provider is Puget Sound Energy.
How much electricity does a Tankless Water Heater (Electric) use per year?
A Tankless Water Heater (Electric) uses approximately 18,000 watts and consumes about 3,285 kWh per year with typical usage of 0.5 hours/day for 365 days/year.
Is a Tankless Water Heater (Electric) expensive to run in Bellevue?
Compared to the national average cost of $427/year, running a Tankless Water Heater (Electric) in Bellevue costs $63 less per year due to lower local electricity rates.
How can I reduce my Tankless Water Heater (Electric) energy cost in Bellevue?
To reduce Tankless Water Heater (Electric) costs in Bellevue: Provides hot water on demand with no standby loss. Flush annually to remove scale. Upgrading to an ENERGY STAR model saves up to 20% on energy costs. Also check with Puget Sound Energy for local energy efficiency rebates and programs.