10 Best Fuel Efficient Generator 2025 in the United States

The DuroMax XP13000EH Dual Fuel Portable Generator is a powerful option with a peak wattage of 13,000 watts, which makes it suitable for home backup during power outages or for use at job sites. It runs on either gasoline or propane, giving you flexibility in fuel choice. The electric start and user-friendly interface make it easy to operate, and it includes a 50-amp outlet for high-power needs.

Its copper windings and robust build ensure durability and longevity, even under heavy use and harsh weather conditions. The generator is portable with no-flat tires, but at 234 pounds, it is quite heavy, which might make moving it around challenging for some users.

Despite some drawbacks, the dual fuel capability, sturdy construction, and high power output make this generator a reliable choice for those needing a versatile and powerful backup power source.

The Westinghouse Outdoor Power Equipment 14500 Peak Watt Tri-Fuel Generator is a versatile and powerful option for those needing a reliable backup power source for homes or portable power for outdoor activities. It can run on gasoline, propane, and natural gas, providing flexibility in fuel choice. The generator offers substantial power with 14,500 peak watts on gasoline, 13,500 peak watts on propane, and 12,000 peak watts on natural gas, making it suitable for larger homes or demanding power needs.

Its runtime is impressive, offering up to 19 hours on a full 9.5-gallon gas tank or up to 7 hours on a 20 lb. propane tank, ensuring prolonged operation during power outages or extended outdoor use. The generator features a remote electric start for convenience, and it's transfer switch ready, making it easy to integrate into home power systems. It also includes safety features like overload protection, automatic voltage regulation, and a CO sensor.

However, it is quite heavy at 230 pounds, which may affect portability despite its sturdy wheels. Its fuel efficiency is commendable, especially with the ability to use different fuel types. The 3-year limited warranty and nationwide customer service network add to its reliability. This generator is best suited for homeowners looking for a robust backup power source or those needing dependable power in remote locations with varying fuel availability.

The WEN 14,500-Watt Tri-Fuel Generator offers impressive versatility with the ability to run on gasoline, propane, and natural gas. This flexibility is a significant advantage for users who want options depending on fuel availability. It provides substantial power output, with 14,500 surge watts and 11,500 running watts on gasoline, making it suitable for heavy-duty tasks and emergency backups.

The electric start feature makes it user-friendly, and its compatibility with transfer switches enhances its utility during power outages. The 8.2-gallon fuel tank allows for up to 12 hours of runtime at half-load, which is adequate for most needs. However, its weight of 249 pounds might pose some challenges in terms of portability, even though it comes with a wheel kit.

This generator does not feature inverter technology, which means it may not provide the cleanest power for sensitive electronics. For those needing a robust, versatile power solution and who can manage its size and weight, the WEN 14,500-Watt Tri-Fuel Generator is a strong contender.