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Home Standby Generators
Home Standby Generators for Automatic Whole-Home Power
A permanently installed generator starts on its own the moment the grid fails, so you never have to haul equipment into the rain or refuel a portable unit at midnight. That matters because outages are getting harder to ignore. The U.S. Energy Information Administration reports that the average American customer lost power for about 11 hours in 2024, and nearly nine of those hours came from major weather events. Our home standby generators collection brings together natural gas, propane, diesel, and battery systems, along with the automatic transfer switches that tie them to your electrical panel.
Residential Standby Generator Options From 13kW to 26kW
Most houses land in the 13kW to 26kW range, and this is where a residential standby generator earns its keep. The Cummins Quiet Connect series offers the RS13A at 13kW, the RS17A at 17kW, and the RS20AC at 20kW, while Briggs & Stratton supplies 20kW and 26kW PowerProtect DX units plus a 25kW model. Each pairs with a matching 100A or 200A transfer switch from Cummins or Briggs & Stratton, and the 400A Cummins PowerCommand switch handles larger service panels.
Whole House Standby Generator Fuel Choices
A whole house standby generator can run on whatever fuel suits your property. The Wildcat Freedom and Renegade lines run on natural gas or propane, and the Wildcat Roughneck stretches from 30kW to 60kW for estates and small commercial buildings. If you prefer diesel, you will find the Maspower units powered by Yanmar engines from 13kW to 45kW, Wildcat diesel models, Kubota Lowboy units, and the Cummins C100D6C at 100kW. Several Maspower models are available with 50, 100, or 200 gallon fuel tanks, so you can stretch runtime through long outages.
Battery Systems for Whole Home Standby Power
If you want silent, fuel-free backup, a whole home standby generator alternative may fit better. The Anker SOLIX E10 whole-home system scales from 6kWh to 90kWh, and the Anker Smart Generator 5500 tri-fuel unit can recharge it during extended outages. EcoFlow DELTA Pro Ultra and DELTA Pro Ultra X systems connect to the Smart Home Panel 2 or 3 for circuit-by-circuit control, and the Lion Energy Sanctuary 2 adds solar storage. Every order ships free within the continental USA, and our USA-based team can help you match a system to your home.
Frequently Asked Questions
How do I choose the right size standby generator for my house?
Add up the running watts of everything you want powered at once, then account for the starting surge of your largest motor, such as an air conditioner or well pump. An electrician can run a load calculation against your panel for a precise number. If you want the whole house covered, size up rather than down, since a generator that is working near its limit wears faster and trips under heavy starts.
Do I need a permit and a professional to install a standby generator?
Yes. Installation typically involves a concrete or composite pad, a gas line or fuel tank, an automatic transfer switch, and electrical connections, and most localities require permits and inspections. Local codes also set how far the unit must sit from windows, property lines, and the house. A licensed electrician and, for gas units, a licensed gas fitter should handle the work.
How often does a standby generator need maintenance?
Most units run a short self-test cycle every week, and an annual service covering oil, filters, spark plugs or fuel filters, and the battery keeps them reliable. Follow the interval in your owner's manual, and have the transfer switch inspected during the same visit so every part of the system is ready before storm season.
Should I choose natural gas, propane, or diesel?
Natural gas never runs out as long as the utility line stays in service, but it depends on that line. Propane stores in your own tank and keeps for years, while diesel offers excellent fuel economy and long engine life for bigger loads. Choose based on what your property already has: an existing gas line favors natural gas, and a rural site often favors propane or diesel.
How soon can I get a standby generator delivered?
Standby generators ship by freight, and overnight shipping is not available for generators. Delivery time depends on your location and the carrier, and demand spikes during hurricane season, so order early to leave time for delivery, scheduling an installer, and a test run before the next storm.
