Seattle, WA
Electrification ROI based on Seattle City Light rates and local rebates
Population: 749,000•Climate: mixed•Electric: $0.108/kWh•Gas: $1.35/therm
Best Upgrade
Solar Panels
14.7 years • 24% ROI
Annual Savings
$2,356/year
Full electrification
Total Incentives
$19,950
Federal + utility rebates
Visual ROI Analysis
Payback Period Comparison
Lower is better • Shortest payback = fastest return on investment
Annual Savings Comparison
Higher is better • More annual savings = greater long-term benefit
Cumulative Net Savings Over Time
Point where line crosses $0 = payback achieved • Steeper line = faster savings growth
Detailed ROI by Upgrade
Heat Pump HVAC System
Replace gas furnace + AC with an all-electric heat pump
🌡️
Costs
Upfront cost:$12,000 - $18,000
Federal tax credit:-$2,000
Seattle City Light rebate:-$3,000
City/state incentives:-$3,000
Net cost:$4,000 - $10,000
Savings & ROI
Annual savings:$48/year
Simple payback:Not Recommended
15-year ROI:-95%
CO₂ reduction:0.5 tons/year
15-year net savings:$-14,278
Solar Panels (6kW System)
Generate your own electricity from the sun
☀️
Costs
Upfront cost:$15,000 - $21,000
Federal tax credit (30%):-$5,400
City/state incentives:-$500
Net cost:$9,100 - $15,100
Savings & ROI
Annual savings:$851/year
Simple payback:14.7 years
25-year ROI:24%
CO₂ reduction:3.6 tons/year
Full Electrification Package
Heat pump + Solar + Heat pump water heater + EV charger
⚡
Costs
Total upfront cost:$30,300 - $45,000
Total federal credits:-$10,400
Total utility rebates:-$4,750
City/state incentives:-$4,800
Net cost:$10,350 - $25,050
Savings & ROI
Annual savings:$2,356/year
Simple payback:7.9 years
15-year ROI:-1%
Total CO₂ reduction:10.3 tons/year
15-year net savings:$-2,317
Seattle Energy Context
Climate & Usage
Climate zone:mixed
Heating degree days:4,750
Cooling degree days:250
Avg home size:1,850 sq ft
Energy Costs
Utility provider:Seattle City Light
Electricity rate:$0.108/kWh
Natural gas rate:$1.35/therm
Avg monthly bills:$125 elec + $72 gas
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