Natural gas home generators cost about $100 per day. Diesel and propane are on equal ... What size home generator do I need? A 17 to 20 kW generator is needed to run a whole house.

The generator itself can’t do its job without the appropriate fuel, usually diesel, propane, or natural gas. The daily cost to run a 21 kW generator on natural gas is about $90. Running a 20 kW ...