10 Best diesel portable generators of 2026

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Energypac Systems

15kW Diesel Generator Enclosed with Fuel Tank
9.9

Exceptional

Our Rating
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Value for Money

2

Generac
Generac 6864 XD5000E 5000-Watt Diesel-Powered Portable Generator - Ideal for Emergency Backup Power and Job Sites - Reliable Power for Demanding Applications - CARB Compliant
Main highlights

Sturdy and Portable Design
Robust steel frame with integrated lifting eye for easy transport.

Ideal for Job Sites and Emergencies
Perfect for remote locations and backup power in demanding environments.

Extended Runtime and Reliability
12-gallon tank offers 32.4 hours at 50% load, praised for long runtime.
Key specs
- output wattage:5000 Watts
- wattage:5000 watts
- fuel type:Diesel
- special feature:Durable,Electric,Portable
- engine type:2 Stroke
9.8

Exceptional

Our Rating

9.5
worth the money

9.3
Durability

8.0
movability
3

Westinghouse
Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered
Main highlights

High Power Output and Versatility
14500 Peak Watts with tri-fuel capability for flexibility.

Ideal for Home Backup Use
Perfect for residential power backup during outages.

Praised for Easy Setup and Use
Customers love the remote start and simple setup.
Key specs
- output wattage:14500
- wattage:11500 watts
- fuel type:Gasoline, Natural Gas, Liquefied Petroleum Gas
- special feature:Digital Display, Electric Start, Flat-Free Tire, Automatic Voltage Regulation, CO Sensor
- engine type:4 Stroke
9.6

Exceptional

Our Rating

9.9
Easy to build

9.9
worth the money

9.9
Flexibility
4

Westinghouse
Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered
Main highlights

Powerful Dual-Fuel Engine
Generates 9500 running watts on gasoline and 8500 on propane.

Ideal for Home Backup
Perfect for whole-house power during outages with 50 amp support.

Convenient Remote Start
Highly praised for ease of use and reliability.
Key specs
- output wattage:12500
- wattage:9500 watts
- fuel type:electric
- special feature:Electric Start, Automatic Voltage Regulation, Hour Meter, Dual Fuel, Fuel Gauge
- engine type:4 Stroke
9.3

Excellent

Our Rating

9.9
Easy to build

9.9
worth the money

9.9
Flexibility
5

Westinghouse
Westinghouse 28000 Peak Watt Home Backup Portable Generator, Remote Electric Start with Auto Choke, Transfer Switch Ready 30A & 50A Outlets, Gas Powered, CO Sensor,Blue
Main highlights

Powerful and Reliable
28,000 peak watts with 20,000 running watts for robust power.

Ideal for Home Backup
Perfect for residential use during power outages or emergencies.

Remote Start Convenience
Praised for easy remote start and setup by users.
Key specs
- output wattage:28000
- wattage:20000 watts
- fuel type:electric
- special feature:Digital Display, Electric Start, Automatic Voltage Regulation, CO Sensor, Automatic Idle Control
- engine type:4 Stroke
9.0

Excellent

Our Rating

9.5
Tech Support

8.4
worth the money

8.4
Maneuverability
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6

WEN
WEN 4,750-Watt 120V/240V Dual Fuel Portable Generator with Wheel Kit and Electric Start (DF475T)
Main highlights

Dual Fuel Capability
Switch between gasoline and propane for flexible power options.

Ideal for Emergency Backup
Perfect for powering essential appliances during power outages.

Quiet Operation
Praised for being quieter than larger generators.
Key specs
- output wattage:4750 Watts
- wattage:4750 watts
- fuel type:electric
- special feature:Electric
- engine type:4 Stroke
8.9

Very Good

Our Rating

9.7
Precision

9.7
Easy to build

9.1
worth the money
7

WEN
WEN 11,000-Watt 120V/240V Dual Fuel Portable Generator with Wheel Kit and Electric Start (DF1100T)

12% Off
Main highlights

Dual Fuel Flexibility
Switch easily between gasoline and propane for uninterrupted power.

Ideal for Emergencies
Perfect for residential backup, camping, or job site needs.

Easy Electric Start
Start the generator effortlessly with a simple key turn.
Key specs
- output wattage:11000 Watts
- wattage:11000 watts
- fuel type:electric
- special feature:Electric
- engine type:4 Stroke
8.8

Very Good

Our Rating

9.7
Easy to build

9.3
worth the money

8.9
movability
8

WEN
WEN Quiet and Lightweight 3600-Watt Dual Fuel RV-Ready Portable Inverter Generator with Fuel Shut Off and CO Watchdog (DF360iX)

12% Off
Main highlights

Dual Fuel Versatility
Runs on gasoline or propane, offering flexibility and convenience.

Ideal for Emergencies and RVs
Perfect for power outages, camping, and RV trips.

Praised for Quiet Operation
Extremely quiet, comparable to normal conversation levels.
Key specs
- output wattage:3600
- wattage:3600
- fuel type:Gasoline, Propane
- special feature:Dual Fuel
- engine type:N/A
8.5

Good

Our Rating
9

DuroStar

DuroStar DS13000MXT 13,000-Watt 500cc Tri Fuel Portable Generator - Gas, Propane & Natural Gas, Remote Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Ready
8.3

Good

Our Rating
10

WEN
WEN 5,600-Watt Dual Fuel Portable Generator with Wheel Kit, Electric Start, and CO Watchdog (DF5600X)
Main highlights

Dual Fuel Versatility
Runs on gasoline or propane for flexibility and convenience.

Ideal for Home and RV
Perfect for home backup and RV use with multiple outlets.

Safety with CO Sensor
Automatic CO shutdown sensor praised for family safety.
Key specs
- output wattage:5600
- wattage:5600 watts
- fuel type:Gasoline
- special feature:CO Sensor
- engine type:224cc
8.1

Good

Our Rating

10 Best diesel portable generators of 2026

1

15kW Diesel Generator Enclosed with Fuel Tank

How do we rank?

How do we rank?

Analyzing top stores

2

Generac 6864 XD5000E 5000-Watt Diesel-Powered Portable Generator - Ideal for Emergency Backup Power and Job Sites - Reliable Power for Demanding Applications - CARB Compliant

9.5

9.3

8.0

3

Westinghouse 14500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered

9.9

9.9

9.9

4

Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas and Propane Powered

9.9

9.9

9.9

5

Westinghouse 28000 Peak Watt Home Backup Portable Generator, Remote Electric Start with Auto Choke, Transfer Switch Ready 30A & 50A Outlets, Gas Powered, CO Sensor,Blue

9.5

8.4

8.4

6

WEN 4,750-Watt 120V/240V Dual Fuel Portable Generator with Wheel Kit and Electric Start (DF475T)

9.7

9.7

9.1

7

WEN 11,000-Watt 120V/240V Dual Fuel Portable Generator with Wheel Kit and Electric Start (DF1100T)

9.7

9.3

8.9

8

WEN Quiet and Lightweight 3600-Watt Dual Fuel RV-Ready Portable Inverter Generator with Fuel Shut Off and CO Watchdog (DF360iX)

9

DuroStar DS13000MXT 13,000-Watt 500cc Tri Fuel Portable Generator - Gas, Propane & Natural Gas, Remote Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Ready

10

WEN 5,600-Watt Dual Fuel Portable Generator with Wheel Kit, Electric Start, and CO Watchdog (DF5600X)

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