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For homeowners considering backup power, the choice between a gas generator and V2H (vehicle-to-home) is one of the most consequential decisions in 2026. Here's the 5-year cost comparison.
Upfront costs
- Gas generator (7,500W, portable): $800–$1,500 + $500 transfer switch = $1,300–$2,000 installed
- Gas generator (22kW, whole-home, Generac): $8,000–$12,000 installed
- V2H (Ford Lightning owner): $5,000–$6,500 installed (Charge Station Pro included with truck)
- V2H (Hyundai/Kia owner): $7,000–$9,000 installed (Wallbox Quasar 2 + transfer switch)
Operating costs (5-year)
Gas generator (portable): 4 outages/year × 24 hours × 1.5 gal/hour × $4/gal = $576/year × 5 = $2,880 in fuel. Plus annual oil change and maintenance: $200/year × 5 = $1,000. Total operating: $3,880.
Gas generator (whole-home): Same fuel math at 2x consumption = $1,152/year × 5 = $5,760. Plus maintenance contract $400/year × 5 = $2,000. Total operating: $7,760.
V2H (any EV): "Fuel" cost = electricity to recharge EV after each V2H session. 4 outages × 30 kWh × $0.15/kWh = $18/year × 5 = $90. No maintenance. Total operating: $90.
5-year total cost of ownership
- Portable gas generator: $1,500 + $3,880 = $5,380
- Whole-home gas generator: $10,000 + $7,760 = $17,760
- V2H (Ford Lightning): $5,750 + $90 = $5,840
- V2H (Hyundai/Kia): $8,000 + $90 = $8,090
The verdict
V2H beats gas generators on 5-year TCO in every scenario except portable-generator-for-rare-outages. And V2H delivers additional value gas generators can't: silent operation, no fuel storage, no emissions, and the EV is also your daily driver. If you own a V2H-compatible EV, the math strongly favors V2H. See our V2H guide for setup details.
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