Last Updated: September 18th, 2026

If you need a quick answer: most full-size food trucks should look for an inverter generator capable of roughly 7,000–10,000 running watts.

A smaller truck that cooks primarily with propane may be perfectly comfortable with 5,000–7,000 running watts. Trucks relying heavily on electric cooking equipment, multiple refrigeration units, large air conditioners or other high-draw appliances may need 9,000–12,000+ running watts.

For most operators, we recommend a closed-frame inverter generator rather than a traditional open-frame construction generator. Inverter generators are generally quieter, manage partial loads more efficiently, and provide clean power for sensitive electronics such as POS systems, controllers and displays.

Our Top Food Truck Generator Picks

Generator manufacturers rate output differently, so pay attention to running or rated watts, not just the large starting-watt number printed on the generator.

Best Overall for a Full-Size Food Truck: Champion 11,000W Dual Fuel Inverter

For a full-size food truck, the Champion 11,000-Watt Dual Fuel Inverter Generator hits an unusually useful combination of output, noise level, fuel flexibility and electrical connections.

It produces 9,000 running watts on gasoline and 8,100 running watts on propane, with 11,000 starting watts on either fuel. Champion rates the generator at 64 dBA and provides both 120V and 240V power.

That puts it squarely in the range we want for a truck operating refrigeration, exhaust ventilation, water systems, lights, POS equipment, air conditioning and several smaller electrical appliances simultaneously.

Why we like it for food trucks

• 9,000 running watts provides meaningful operating headroom.
• Dual-fuel operation lets you use the propane supply many food trucks already carry.
• Inverter technology is appropriate for sensitive electronics.
• 120/240V capability works with more sophisticated truck electrical systems.
• It includes a 14-50R-style high-capacity receptacle in addition to 30-amp and standard outlets.
• Electric start simplifies daily operation.
• CO shutdown technology adds another layer of safety.

Champion rates gasoline runtime at up to 15 hours at 25% load. On propane, the rating is up to eight hours at 25% load.

Who should buy it?

This is our first choice for a typical full-size food truck when the actual load calculation calls for roughly 7,000–9,000 running watts.

It is particularly attractive for BBQ, burger, taco, catering and other trucks where the major cooking appliances use propane but the truck still carries substantial refrigeration, HVAC and support equipment.

[Check Current Price – Champion 11,000W Dual Fuel Inverter]

Best for Medium Food Trucks: Champion 8,500W Dual Fuel Inverter

Not every food truck needs 9,000 running watts.

If your griddle, fryer, range or smoker burns propane, your electrical requirement can be dramatically lower than that of an all-electric kitchen.

The Champion 8,500-Watt Dual Fuel Inverter provides 7,000 running watts on gasoline and 6,300 running watts on propane. It also provides 120/240V output, electric start and CO shutdown protection.

That makes it an excellent match for trucks with moderate electrical loads but significant propane cooking equipment.

A good fit for:

• Taco trucks
• Burger trucks with propane griddles
• BBQ trucks
• Smoker trailers
• Catering trucks
• Trucks with one A/C system
• Refrigeration-heavy trucks without electric cooking

One advantage of dual fuel is operational flexibility. You can use propane when convenience and storage matter, while retaining gasoline when you need maximum continuous output.

[Check Current Price – Champion 8,500W Dual Fuel Inverter]

Best Premium Food Truck Generator: Honda EU7000iS

The Honda EU7000iS remains one of the most compelling generators for operators who place a premium on noise, build quality and refined operation.

Honda rates it at 5,500 running watts and 7,000 maximum watts. Its GX390 engine uses electronic fuel injection, and Honda rates noise at only 52 dBA at quarter load and 58 dBA at rated load.

That is exceptionally quiet for this class of generator.

Why food truck owners like the Honda

The biggest advantage is not raw wattage. It is refinement.

If you are serving at weddings, breweries, corporate events, wineries, residential neighborhoods or locations where generator noise is especially undesirable, the EU7000iS is very attractive.

Honda also provides electric start, 120/240V operation, CO-MINDER carbon-monoxide monitoring and up to 16 hours of runtime at quarter load.

But watch the rated output

The “7000” in EU7000iS is its maximum output.

Its continuous rated output is 5,500 watts.

That means we would not use it as the primary recommendation for a truck that actually requires 7,000–9,000 continuous watts. This is one place where generator sizing based only on model names can get food truck owners into trouble.

For a propane-heavy kitchen with modest electrical demand, however, it can be an outstanding premium solution.

[Check Current Price – Honda EU7000iS]

Best High-Output Gasoline Option: Predator 9500 Super Quiet Inverter

The Predator 9500 Super Quiet Inverter Generator offers considerably more continuous output than the Honda while retaining closed-frame inverter construction.

Harbor Freight rates it at 9,500 starting watts and 7,600 running watts, with a 67 dBA sound rating. It provides 120/240V power and pure-sine-wave inverter output.

It also has a substantial 18.5-hour rated runtime at 25% load.

The tradeoff

Unlike the Champions above, the Predator 9500 is gasoline-only.

If your truck already carries large propane tanks, dual-fuel operation can be extremely convenient. But if you intend to operate primarily on gasoline anyway, the Predator gives you substantial inverter-generator capacity.

[Check Current Price – Predator 9500]

What Size Generator Does a Food Truck Need?

The answer depends much more on your equipment list than on the type of food you sell.

As a starting point:

These are planning ranges, not substitutes for an electrical load calculation.

Two taco trucks can have completely different generator requirements. One might cook almost entirely with propane while another uses an electric steam table, induction equipment, air conditioning and multiple refrigeration compressors.

The equipment determines the generator.

Running Watts vs. Starting Watts

This is probably the most important specification to understand when buying a food truck generator.

Running watts

Running watts — sometimes called rated watts — are the amount of power the generator can continuously provide.

This is the number you should use when determining whether the generator can operate your truck.

Starting watts

Motors and compressors can briefly consume substantially more power when they start.

That includes:

• Refrigerators
• Freezers
• Air conditioners
• Ice machines
• Pumps
• Some exhaust systems

A generator therefore needs enough starting capacity to absorb those momentary loads without tripping a breaker, dropping voltage or shutting down.

Don’t buy a “10,000-watt generator” assuming you have 10,000 watts available continuously.

Always check the rated or running wattage.

How to Calculate Your Food Truck Generator Size

Before purchasing anything, make a list of every electrical device that could operate at the same time.

Include:

• Refrigerator
• Freezer
• Prep refrigerator
• Ice machine
• Exhaust hood
• Makeup-air fan
• Air conditioner
• Water pump
• Water heater
• Microwave
• Coffee equipment
• Blender
• Food warmer
• Steam table
• POS system
• Menu displays
• Interior and exterior lighting
• Battery chargers
• Small appliances

Look at the equipment data plate or manufacturer specifications.

For a basic estimate:

Watts = Volts × Amps

A 120V appliance drawing 10 amps therefore represents approximately:

120 × 10 = 1,200 watts

Add the equipment that will run simultaneously.

Then account separately for motor and compressor starting loads.

Finally, give yourself some operating reserve rather than designing the truck so the generator must operate at its absolute limit whenever everything is turned on.

Example

Suppose your normal operating load reaches approximately:

5,700 watts

A generator rated for only 6,000 continuous watts leaves very little room for compressor cycling, an additional appliance or future equipment.

A unit providing roughly 7,000–9,000 running watts would generally be a more practical class to investigate.

The final selection still needs to account for the largest startup load and your truck’s electrical configuration.

Why We Prefer Inverter Generators for Food Trucks

Traditional generators can certainly power a food truck, and high-output conventional generators often cost less per watt.

However, inverter generators offer several advantages that are unusually valuable in mobile food service.

Lower noise

Customers do not want to eat next to construction-site noise.

A quieter generator is especially important at breweries, festivals, weddings, neighborhoods and catered events.

Clean electrical power

Modern food trucks contain far more electronics than they once did.

Your truck may contain:

• POS terminals
• Routers
• Digital thermostats
• Electronic appliance controls
• LED power supplies
• Displays
• Chargers
• Computer equipment

An inverter generator provides high-quality power suitable for sensitive electronics.

Better partial-load operation

An inverter generator can vary engine speed according to electrical demand rather than running at maximum engine speed continuously.

Food truck loads change throughout the day, so that can reduce unnecessary noise and fuel consumption.

Gasoline or Propane for a Food Truck Generator?

For many food trucks, dual fuel is the most flexible choice.

Propane has several advantages for mobile kitchens.

You may already have propane onboard for cooking, it stores extremely well, and you don’t have to worry about aging gasoline sitting in the carburetor during periods of inactivity.

There is a tradeoff:

Generators normally produce less continuous power on propane than on gasoline.

For example, the Champion 8,500W inverter is rated at 7,000 running watts on gasoline but 6,300 running watts on propane.

Always size the generator using the output for the fuel you actually intend to use.

Don’t Forget the Generator Outlet

Wattage is only part of the equation.

You also need a generator that can properly connect to your truck’s electrical system.

Common connections include:

• 120V 20A
• L5-30
• L14-30
• TT-30
• 14-50

Larger trucks commonly use a 30-amp or 50-amp shore-power-style connection.

If your truck uses a 50-amp inlet, look carefully at generators providing an appropriate high-capacity receptacle.

Also remember:

A 50-amp-style receptacle does not magically make a generator capable of providing 50 amps continuously.

Generator output is still limited by the generator’s rated wattage.

Electrical distribution, neutral configuration, grounding, GFCI protection and shore-power/generator switching should be designed appropriately for the truck. When in doubt, use a qualified electrician familiar with mobile food-service equipment and applicable local codes.

How Quiet Should a Food Truck Generator Be?

For customer-facing food service, quieter is better.

As a general purchasing target, we strongly prefer closed-frame inverter generators in approximately the 60–67 dBA class or below when sufficient power is available.

The Honda EU7000iS is unusually quiet at 52–58 dBA.

The Champion 11,000W inverter is rated at 64 dBA, while the Predator 9500 is rated at 67 dBA.

Be careful when comparing manufacturers because sound ratings may be measured at different loads and distances.

Food Truck Generator Safety

Never operate a portable generator inside your food truck or another enclosed space.

Portable generators produce carbon monoxide, an odorless and potentially lethal gas.

The U.S. Consumer Product Safety Commission recommends operating portable generators outdoors and at least 20 feet away from buildings, with exhaust directed away from openings.

For mobile food operations:

• Keep exhaust directed away from serving windows, doors and air intakes.
• Do not place the generator where customers can gather around the exhaust.
• Use carbon-monoxide detectors inside the truck.
• Follow the generator manufacturer’s clearance instructions.
• Follow local fire-code requirements.
• Never refuel a hot or running generator.
• Protect the generator from rain according to manufacturer instructions without enclosing it or restricting airflow.

CO-shutdown technology is useful, but it should never replace proper generator placement and ventilation.

Which Generator Is Best for Your Food Truck?

For a typical full-size food truck, we would start our search in the 7,000–10,000 running-watt inverter-generator range.

Our recommendations break down this way:

Champion 11,000W Dual Fuel Inverter: Best fit for many full-size food trucks because of its 9,000-watt gasoline rating, dual-fuel operation and high-capacity electrical connections.

Champion 8,500W Dual Fuel Inverter: Excellent choice for medium-size trucks and kitchens that rely primarily on propane for cooking.

Honda EU7000iS: Best premium choice when low noise and refined operation matter more than maximum output.

Predator 9500: Strong choice for operators wanting approximately 7,600 running watts from a closed-frame gasoline inverter generator.

The most important rule, however, is simple:

Buy the generator that matches your calculated electrical load — not the generator with the biggest number printed on the side.

A properly sized generator should run quietly in the background while your crew concentrates on cooking and serving customers.

Frequently Asked Questions

Is a 7,000-watt generator enough for a food truck?

It can be. A propane-heavy food truck with moderate refrigeration and HVAC loads may operate comfortably in this range. An electricity-heavy kitchen may require considerably more capacity. Check the generator’s running wattage, not just peak wattage.

Is a 10,000-watt generator enough for a food truck?

For many food trucks, approximately 9,000–10,000 running watts provides substantial capacity. Large all-electric kitchens can exceed that, so equipment-level load calculations are still necessary.

Should a food truck use an inverter generator?

We generally recommend one when practical. Inverter generators tend to be quieter and provide excellent-quality power for POS equipment, electronic appliance controls and other sensitive electronics.

Can I run my food truck generator on propane?

Yes, if you purchase a dual-fuel or propane-capable generator. Remember that most dual-fuel generators produce somewhat less power on propane, so use the propane running-watt rating when sizing your system.

Can I put the generator inside the food truck?

No portable combustion generator should be operated inside the truck. Carbon-monoxide accumulation can be deadly. The generator needs to operate outdoors in accordance with manufacturer instructions and applicable safety requirements.

Do I need a 50-amp generator for a food truck?

It depends on how your truck is wired. Larger trucks frequently use 30-amp or 50-amp shore-power connections. Match the generator, receptacle, wiring and distribution equipment to the truck’s electrical system rather than relying on adapters to compensate for inadequate generator capacity.

Author: joshua Fuller