How Much Does A Generator Cost In Your Area?

Most whole-home standby installs wrap up in 1 to 3 days for the on-site work, but the full project takes 4 to 8 weeks from order to first start because of permit approvals and gas company sign-off. The pad pour, generator placement, transfer switch wiring, and gas line connection happen in parallel. Expect 2 to 4 hours of power outage during the final transfer switch hookup. Most homeowners stay home during the work.

A 10 to 14 kW unit covers essentials like fridge, lights, well pump, furnace, and a few outlets, costing $5,000 to $9,000 installed. An 18 to 22 kW handles most of the home including central AC for $8,500 to $14,000. A 24 to 26 kW unit runs the whole home including 2 AC units and an electric range for $12,000 to $20,000. A free in-home load calculation from any reputable installer pins down the right size.

Natural gas is the top pick for 80% of US homes because it never runs out and never needs refilling. Propane is the right call if your home does not have natural gas, since you can stockpile fuel and run for weeks. Diesel is mostly used in commercial and rural settings because of fuel storage and noise. Gasoline portable generators only run 8 to 12 hours per tank and are best for short outages or RV use.

Yes, every permanently installed generator needs a transfer switch to safely separate your home from the utility grid during a backfeed. Automatic transfer switches at $400 to $1,200 sense the outage and start the generator in 10 to 30 seconds. Manual transfer switches at $200 to $600 require you to flip the switch yourself. Both are required by code and many utilities will not energize your home without one.

Natural gas standby generators burn about 1 to 3 cubic meters of gas per hour, costing $1 to $4 per hour at average US gas prices. A typical 24-hour outage costs $25 to $80 in fuel. Propane runs $3 to $6 per hour. Annual maintenance runs $200 to $500 including oil change, filter, and load test. Most warranties require professional annual service, so factor that into the lifetime cost.

Portable generators with extension cords or a manual interlock kit are within DIY range for $200 to $600 in parts. Standby generators always require a licensed electrician and gas fitter because of permit, code, and utility requirements. DIY standby installs void manufacturer warranties and most homeowners insurance backs out of generator-related claims if the install was unpermitted.

Home batteries like the Tesla Powerwall, Enphase IQ, and Generac PWRcell cost $10,000 to $20,000 installed for a 10 to 15 kWh system. They run essentials for 8 to 24 hours with no fuel, no noise, and no maintenance. They pair well with solar for indefinite outage protection. For homes without solar in long-outage regions, a natural gas standby usually beats batteries on cost-per-hour of backup.