⚡ Generator Setup Cost Calculator

Estimate the cost of setting up a backup generator for winter power outages. Covers the generator unit, extension cords, fuel stabilizer, cover, and transfer switch.

Project Details

Generator Wattage (watts)

Running wattage needed — add up the appliances you plan to power (fridge ~600W, furnace fan ~800W, lights ~200W)

Fuel Type (1=gas, 2=dual fuel, 3=inverter)

1 = gasoline only, 2 = dual fuel (gas + propane), 3 = inverter generator (quieter, better for electronics)

Add Transfer Switch (0=no, 1=yes)

1 = add a power inlet box and transfer switch for safer whole-house connection (requires electrician to install)

Your Estimate

Enter your details and hit Calculate to see results.

More Tools You Might Need

Kill-A-Watt Meter

Measure the actual wattage of each appliance so you size the generator correctly

Carbon Monoxide Detector

Required safety item — generators produce lethal CO gas; never run one indoors or in a garage

Pro Tips

✓ Never run a generator inside a garage, basement, or shed — CO poisoning kills within minutes
✓ Size your generator for running watts, not starting watts — some motors need 2-3x more power to start
✓ Dual-fuel generators give you flexibility when gas stations run out during extended outages
✓ Add fuel stabilizer every time you fill the tank to prevent carburetor damage during storage