Best Portable Generators of 2026: 174 Models Rated

How to choose

1. Add up your running watts, then your biggest starting load

List what has to run at the same time and add up the running watts. Then add the extra starting watts of the single biggest motor (fridge compressor, well pump, window AC): motors pull two to three times their running wattage for a second or two. That total tells you the size you need. Our sizing guide has a full worksheet.

2. Inverter or open frame?

Inverter generators produce clean power (low harmonic distortion) that is safe for laptops, TVs and modern furnaces, run much quieter and throttle down at light loads to save fuel. Open-frame generators give you far more watts per dollar and the 240 V outlets a house needs, at the cost of noise and weight.

3. Pick the fuel

Gasoline is everywhere but goes stale in about a month without stabilizer. Dual fuel models also run on propane, which stores for years in a tank; expect roughly 10% less power on propane. Tri fuel adds natural gas, which requires a connection installed by a licensed pro.

4. Check the outlets

For home backup, look for an L14-30R (30 A, 120/240 V) or a 14-50R (50 A) outlet: that is what a transfer switch or an interlock kit connects to. RV owners want a TT-30R (30 A RV) or a 14-50R for 50 A rigs.

5. Safety features count

A CO shutoff sensor turns the engine off when carbon monoxide builds up around it. It is a backup, not a license to run a generator near the house: always 20 feet away, exhaust pointed away, never in a garage. Read our generator safety guide.

Mistakes to avoid

Choosing on starting (peak) watts: the number on the box. Running watts decide what you can actually power for hours.
Running a generator in a garage, even with the door open: carbon monoxide builds up in minutes.
Backfeeding the house through a dryer outlet with a double-male cord: it can electrocute line workers. Use a transfer switch or an interlock kit.

Frequently asked questions

What is the best portable generator?

The top-rated model in our comparison is the one that best balances power, runtime, noise, features and price. But the best generator is the one that matches your use: a 2,000 W inverter is perfect for camping, while home backup with a well pump starts around 7,500 running watts with a 240 V outlet.

What size generator do I need to run a house?

To keep the essentials going (fridge, freezer, furnace blower, sump pump, lights, router), most homes need 5,000 to 7,500 running watts. Add a 240 V well pump or a small central AC and you are in the 9,500 W-and-up class.

Is an inverter generator worth it?

Yes if you run electronics, camp or care about noise: inverters are far quieter and produce clean power. For whole-home backup on a budget, an open-frame dual fuel model delivers more watts per dollar.

Gas, propane or dual fuel?

Dual fuel gives you the choice: gasoline for maximum power, propane for long storage and cleaner running. It costs a little more than a gas-only unit and is usually worth it for emergency backup.

Why are your scores relative?

Each criterion is scored by the model's position among all the generators we analyzed, using the specs published by the manufacturers. We did not test these units hands-on: our methodology page explains the math.

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