The best portable generators for staying on the grid during severe weather

Whether it's snow or ice, winter storms always carry the risk of power outages — and without access to heating, lights, and chargers, things can turn from inconvenient to downright dangerous in the blink of an eye. Thankfully, the best portable generators and power stations serve as your first line of defense against any power outage, keeping your essential devices and appliances running when you need them the most. They're not just handy for emergency preparedness, though — they can also bring extra convenience to your camping trip, tailgate, or construction zone.

We completed extensive research, tested models in our own homes, and consulted with a certified emergency manager to compile the best portable generators. Our top pick is the Honda EM5000SX, a powerful and reliable model that came highly recommended by an expert. If you're on a budget, the Champion Dual Fuel operates on gas or propane and costs under $600. Keep in mind that gas and propane models shouldn't be used inside, so if you're looking for an indoor generator, opt for our battery powered pick.

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Top picks for portable generators

Best overall: Honda EM5000SX - See at Acme Tools

Best battery powered: Anker SOLIX F3800 - See at Amazon

Best dual fuel: Westinghouse Outdoor Power Equipment 12500 - See at Amazon

Best budget: Champion Power Equipment 4375-Watt Dual Fuel - See at Amazon

Best heavy duty: Honda EB10000 - See at Acme Tools

Best compact: Honda EU2200i - See at Amazon

Best overall

It's expert-approved and reliable. This gas-powered Honda generator was specifically recommended by our expert Michael Prasad, a certified emergency manager and senior research analyst at Barton Dunant, who praised its overall reliability. Its functional design hits that user-friendly sweet spot of performance and portability, boasting a powerful 389cc iGX390 Honda engine, intuitive controls, and a pair of beefy rubber wheels for convenient transport.

It can power just about everything you need. The 5,000-watt running output is sufficient for powering most household appliances and a great portable option to connect to your home via transfer switch. We're also fans of this model's Bluetooth connectivity, allowing users to use the Honda My Generator app. As long as you're within 75 feet, you can use your phone or another connected device to start and stop the machine remotely, as well as monitor its output power, engine operating hours, fuel level, and maintenance reminders.

Best battery powered

This is essentially a giant rechargeable battery. The Anker Solix F3800 has a 3,840Wh capacity that delivers serious power for its size — enough to charge a smartphone up to 465 times, run a mini fridge for about 30 hours, or keep a full-size refrigerator going for nearly 15 hours. You can also string together multiple units and connect them to your electric panel with a home backup kit for expanded functionality.

The solar panels generate energy and it's completely quiet. While the Anker Solix F3800 is technically classified as a power station, pairing it with solar panels allows it to generate energy rather than simply store it — putting it in direct competition with traditional gas and propane generators. Instead of relying on fuel runs, oil changes, or noisy engines, the F3800 runs virtually silent on rechargeable battery power, making it easier to use indoors and during prolonged outages.

You won't need to worry about gas or propane. Thanks to its two 200-watt solar panels, you're also not reliant on fuel sources like gas or propane that may become unavailable or expensive in an extended emergency situation. Anker claims that these two panels — when used in ideal conditions — can charge the unit from 0 to 80% in just 1.5 hours. Of course, that rate will significantly decrease in overcast or rainy weather. Fortunately, you can also charge the Solix F3800 by plugging it into a wall socket. In our tests, it only took about two hours to charge from empty to full.

There are plenty of ports. Another useful feature of this generator is its wide variety of output ports. In addition to six standard 120V AC ports and a 12V option for car charging, you also get three USB-C and two USB-A ports. Plus, NEMA 14-50 and L14-30 ports allow for convenient RV and EV connections.

It's easy to monitor. Finally, we're big fans of the large, bright display, which gives you a lot more data than the gas-powered generators on this list. The Anker app also allows you to monitor the operation from afar, check real-time charging status and remaining battery, and even customize power usage.

For more information, read our full Anker Solix review.

Best dual fuel

It uses both gas and propane for fuel. This Westinghouse generator is a great choice for those who don't want to be limited to a single fuel source. My favorite feature of this dual-fuel machine is its user-friendly design. A straightforward fuel switch makes it easy to select your preferred option, and since you don't have to shut off the unit to do so, keeps power flowing at all times. Large, color-coded wattage specs for each fuel type are clearly displayed too, so you won't need to go digging through the manual to make sure your appliance is compatible.

It's easy to use. A push-button start adds to this hassle-free operation, and the remote start key fob is effective from up to 99 feet away. This generator also includes a propane hose with a regulator, so there is no need to purchase it separately. This model is available in a 15,000-watt option for those who want more power, as well as 4,650, 6,600, and 9,500-watt versions for lighter-duty use.

Best budget

This generator performs just as well as models double the price. Despite its affordable price, this Champion Power Equipment generator provides nearly as much functionality as its higher-end competitors, thanks to a dual-fuel operation, 3500W running wattage, and range of outlets.

It's not as powerful as other generators, but it's relatively lightweight. The running wattage (3500W for gas and 3150W for propane) is sufficient to power larger appliances like refrigerators or washing machines individually or multiple items like well-pumps, coffee makers, and microwaves at the same time. The 4.7-gallon gas tank also provides 14 hours of runtime at 50% load or up to 10.5 hours on propane. The covered outlets are also a nice perk, preventing unused ports from being damaged by the elements. Although it's not as powerful as larger options, the 3,500-watt capacity translates to a lower overall weight of just 104 pounds, which naturally increases portability.

It's safe to use. I also made sure not to skimp on safety when choosing this lower-budget option and that, like every model on our list, this machine automatically shuts off when harmful levels of CO are detected.

We also recommend a Briggs & Stratton model. If the Champion is unavailable, the Briggs & Stratton 3500W Portable Generator is still a fine option, but it has less versatility as a gas-only model. It has a four-gallon fuel tank that can provide power for up to eight hours when at a 50% load.

Best heavy duty

This generator can handle any heavy-duty job. This 10,000-watt Honda generator is beefy enough to deliver large power loads, and its robust frame is well-suited to heavy-duty use. Whether you're using it to power table saws, air compressors, and bench grinders on a rough job site, or just want to make sure it can withstand the damaging effects of a natural disaster unscathed, this is a great option.

It's incredibly powerful, but it's loud. The Honda GX630 commercial engine provides 9,000 running watts, and the 8.1-gallon fuel tank has an impressive runtime of 7.9 hours at half-load capacity. This machine is naturally louder than smaller models, although not by a huge amount. Its 73-decibel level is only marginally louder than the 66-decibel level of our top pick, the Honda EM5000SX.

It's hefty. Not surprisingly, this heavy-duty machine is, well, pretty heavy. Its 403-pound weight is beefier than any other option on our list, although the convenient lift-hook handle and wheel kit make this less of an issue.

Best compact

This generator is easy to carry and move. If portability is your top priority, and don't have the need or space for a large-output machine, look no further than this compact Honda generator. Another Honda model recommended by our expert Prasad, this 47.4-pound generator features a top-mounted carrying handle for convenient transport and storage. This compact design is also well-suited for emergency evacuation situations, and much easier to toss into the bed of a pickup truck than a 200-pound machine.

It's small but mighty. Despite its small footprint, this model's 2,200 starting wattage is sufficient to run a full-sized refrigerator or freezer, or multiple smaller appliances like microwaves, electric skillets, coffee makers, or small air conditioners. Depending on the load, this generator can run continuously for up to 9.6 hours. If you need more power but don't want to worry about transporting and storing a full-size machine, you can simply purchase a second unit and use a parallel cord to combine their outputs.

What to look for in a portable generator

If you're not familiar with these machines and how they work, purchasing the best portable generator for your needs can be an intimidating process. Keep these factors in mind as you're shopping:

Type

There are two main types of portable generators, conventional (or "standard") and inverter generators, which generate electricity in slightly different ways.

• Conventional generators have an engine that powers a motor, which uses an alternator to generate alternating current (AC) electricity. These generators are relatively simple to repair and maintain, but since their energy output is directly coupled to their engine RPMs, they aren't as efficient as inverter generators. The majority of the picks in our guide are conventional generators (apart from the inverter and solar-powered models).
• Inverter generators are more complex, and instead of just outputting the AC electricity straight from the engine, use two additional steps to better regulate their electrical output. After generating AC from the motor, inverter generators then convert that electricity into a more stable direct current (DC), and then back into AC — calibrating it to the required output of the specific device being powered. So, instead of running the engine at the same RPM regardless of the electrical load required, an inverter generator only produces the amount of electricity being drawn, allowing it to be much more fuel efficient than a standard generator.

Fuel

All portable generators require some kind of fuel to convert into electricity. While most run on gasoline, others use propane, and larger full-house generators can also use diesel or natural gas, so make sure you choose the one best suited to your situation. Prasad says you should consider where you would store the fuel for your generator, and where you plan on obtaining it in your local area. Gas is a popular option because of its availability, but you'll need to have a supply on hand if you want to be fully prepared for an emergency. If you wait until you're ready to use your generator, you may be standing in long lines with everyone else at the gas station.

"Dual-fuel" generators are becoming more common and can accept multiple fuel types, typically gas and propane. Dual-fuel models aren't just convenient, they're invaluable during extended power outages when gas stations have run dry, since you can seamlessly switch over to propane. "After a major storm with multi-day power outages, it is easier to get a tank of propane than it is to get a gallon of gasoline," said Prasad.

Solar-powered portable generators only require sunlight to convert to electricity. Although they take longer to charge up, these models have essentially an unlimited fuel supply (as long as the skies are clear of course) and are the best portable generator options if you're totally off the grid.

Wattage (starting and running)

Portable generators have two wattage outputs, starting and running. The starting (or "surge") wattage is typically only for a few seconds, while the running wattage is what it can sustain for long periods of time. To make sure your generator meets your needs, Prasad advises that you calculate the total amount of energy used by whatever you plan on powering. Larger appliances like refrigerators typically state their required starting and running wattage information on their data plates, and for smaller items you may need to consult the product's instruction manual.

Outlets

To ensure your generator is compatible with the type and quantity of items being powered, make sure it has enough outlets, as well as the correct type. While standard 20A 120V duplex three-prong outlets are fine for smaller appliances, high-wattage applications typically require larger 30A outlets.

Weight

Even though portable generators are designed to be transported, they're not exactly lightweight. Prasad recommends that you consider your physical capabilities when choosing a portable generator. He adds that you'll need to be able to move it from a safe storage area to where you want to run it, reiterating that it needs to be positioned outside in an open area, and away from windows and doors where fumes might enter the home. If you want the capacity of a larger generator, but aren't able to move it safely, consider purchasing two smaller ones that can be paired together.

Noise

Portable generator engines can be loud, and if you plan on running them for long periods of time, can get a little irritating, especially at night. If maintaining a low noise level is a priority, compare the decibel (dBA) specs on your potential generators to choose the quietest option. Inverter generators are almost always quieter than standard generators, and solar-powered models are silent.

Safety

Safe generator usage "is one of the most critical aspects those of us in emergency management and public safety want to relay to the public," said Prasad. Portable generators that use combustion fuel, gas, and propane must be used outside — at least 20 feet from your home — to avoid deadly carbon monoxide buildup. All of our picks for the best portable generator have carbon monoxide detection and automatic shut-off features.

How we chose portable generators

When selecting the best portable generators for this article, I called upon my own experience as a general contractor using standard and inverter models, and also consulted with Michael Prasad, a certified emergency manager and senior research analyst at Barton Dunant, an emergency management training company.

I based my selections on several criteria, including portability, performance, user-friendly interface, and safety features. Due to Prasad's emphasis on safety, we made sure that all of our picks (apart from the solar-powered option) feature some kind of carbon monoxide detection and shut-off system.

Portable generator FAQs

What size generator do I need to run my house?

To find the right generator, add up the wattage requirements of every appliance you plan on using at the same time. The Home Depot has a convenient formula to determine the total wattage needed for each item: Running Wattage (R) + Starting Wattage (R x 3) = Total wattage needed.

The best portable generators are only meant to run a few items at a time. "If you plan on running all of the appliances, heating/air conditioning, and lights in your house during a hurricane when the power goes out, a portable generator is not the answer," said Prasad. To continue running everything as usual, you'll need a much larger whole-house generator.

How much power does a portable generator provide?

Portable generator power is measured in watts (W), which show how much electrical load an appliance can handle at once. Wattage varies between generators. Small models deliver 1000-3000 watts, midsize models provide 3000-5000 watts, and the biggest generators can produce up to 9000 watts.

Many generators advertise two wattages: the starting or surge watts (the maximum power available immediately after motor startup) and running watts (the amount of power supplied continuously). So, you'll also need to check the starting and running requirements for each item you're planning on powering.

How long can a portable generator supply power?

Whether you're choosing a portable generator for recreation or emergency planning, it's important to have a clear understanding of its runtime. The first factor to consider is the fuel type and tank size. Gasoline generators (the most common) with a 5-gallon tank typically provide 7 to 10 hours of runtime at 50% load, while a 20-pound propane tank can deliver 5 to 10 hours depending on demand. Naturally, the larger the fuel tank, the longer it can run. The load placed on the generator also affects its runtime, with higher loads consuming fuel faster than partial loads. While most generators can run continuously as long as you keep refueling, it's crucial that you stay on top of any maintenance requirements like oil and air filter changes. These maintenance intervals will be detailed in your generator's user manual, as well as any cool-down guidelines.

Fuel accessibility is another factor to consider, especially in emergency situations. In a natural disaster, gas or propane may not be convenient to find (due to logistical issues or hoarding by others) making a dual-fuel machine naturally more valuable. This way you can switch over to whichever fuel you can more easily find. It's also worth noting that stored backup gas can start to degrade after 6 months to a year, while propane stays stable indefinitely.

What can I use a portable generator for?

You can use a portable generator to power a wide range of items, from small electronics like smartphones and laptops, to large draw appliances and power tools, and even RVs and electric vehicles. This versatility makes portable generators useful for off-grid recreation activities like camping or RV excursions, or as a backup power supply in the event of a natural disaster (allowing you to keep your fridge, smartphones, and medical equipment up and running). They're also useful for powering tools and equipment (such as lighting and air compressors) on a construction jobsite, as well as outdoor events, powering sound systems, food service equipment, or inflatable attractions.

Is an inverter better than a generator?

Inverter generators aren't better than a standard generator, but they have their advantages. They have better fuel efficiency, and they're compact and lightweight.

What are the disadvantages of an inverter generator?

Generally, inverter generators are more expensive and have a lower power input.

Should I choose a power station over a portable generator?

You can't beat the raw power and convenient fuel-to-power operation of a portable generator, but certain situations would be better served by a power station. Power stations are essentially big rechargeable batteries with built-in charging ports, providing a supply of usable, portable power that you can save for a power outage or bring along on an off-grid excursion. Although power stations typically lack the power output of a portable generator, their smaller size and lighter weight are more convenient to transport, making them ideal for short-duration trips to the beach, tailgate, campsite, or off-grid cabin. They also don't produce harmful emissions like most portable generators, so you can use them inside a house, RV, or tent without issue. When depleted, you simply plug them into your wall outlet at home to charge them back up.

So, if portability is a priority, and your power needs are limited to smartphones, laptops, and smaller appliances like a fan or blender, a power station is probably a more practical choice than a generator. If you're still not sure which option is best for you, this breakdown of portable generators vs. power stations discusses the topic in much more detail.

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