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 12500 Watt Dual Fuel Home Backup Portable Generator is a powerful and versatile option for home backup power needs. It supports both gasoline and propane, offering flexibility depending on fuel availability. With 9500 running watts and 12500 peak watts on gasoline (8500 running watts and 11200 peak watts on propane), it's capable of handling substantial loads, making it suitable for residential use during power outages or emergencies.

The generator features a remote electric start and a transfer switch ready design, adding convenience for users who want easy operations and seamless power transitions. It also comes with multiple protected outlets, including standard household receptacles and RV-ready outlets, enhancing its usability for various applications. The runtime of up to 12 hours on a 6.6-gallon fuel tank is quite practical, though fuel efficiency might vary depending on the load.

The built-in VFT display provides real-time updates on voltage output, frequency, and lifetime hours, which is helpful for monitoring performance. However, the generator's weight of 210 pounds could be a drawback for those seeking high portability, despite being labeled as portable. Additionally, the noise level is not specified, but generators of this size typically produce a considerable amount of noise, which could be a concern for some users. While it doesn’t include inverter technology, which is essential for sensitive electronics, it’s an excellent choice for general home backup with robust power output and dual fuel capability.

The Champion Power Equipment 9000-Watt Electric Start Tri Fuel Generator is a versatile and powerful option for those looking for a fuel-efficient generator. This generator stands out due to its tri-fuel capability, meaning it can run on gasoline, propane, or natural gas, making it highly flexible for different fuel availabilities. With a starting wattage of 9000 and running wattage of 7250 on gasoline, it can support a substantial load, making it suitable for both residential and commercial use, as well as camping trips. The inclusion of natural gas and propane hoses means it's ready to use with these fuels right out of the box, simplifying setup and usage.

The generator also features an electric start with Cold Start Technology, ensuring reliable operation even in colder conditions. Additionally, the CO Shield auto shutoff system enhances safety by detecting carbon monoxide levels and shutting down the unit if necessary. In terms of noise, this model is 50% quieter (72 dBA) than traditional generators, making it a more neighbor-friendly option. The generator's Economy Mode helps in saving fuel, and the Intelligauge feature allows users to monitor voltage, frequency, and operating hours easily.

Portability might be a concern due to its weight of 156.6 pounds, although the included wheel kit can help with mobility. The runtime of up to 12 hours is decent, but its fuel tank volume of 4.32 gallons might require frequent refueling during extended use. While it is lighter than some traditional generators, it is still relatively heavy, which might be a drawback for some users. It comes with a 3-year limited warranty and lifetime technical support, providing peace of mind regarding durability and maintenance. This generator is a strong contender for those needing a reliable, quiet, and fuel-efficient power source with multiple fuel options.