10 Best Fuel Efficient Generator 2025 in the United States

The Generac 8011 GP7500E is a robust dual-fuel generator capable of running on both gasoline and propane, offering flexibility in fuel choice. With a running wattage of 7500 Watts and a starting wattage of 9400 Watts, it is powerful enough to handle heavy electrical loads, making it suitable for both emergency power and recreational use. The PowerRush Advanced Technology enhances its starting capacity, which is a significant advantage for demanding applications.

Additionally, the COsense technology ensures safety by detecting carbon monoxide and alerting users, which is a crucial feature for long operation times or indoor use. The generator boasts an extended runtime with up to 110 hours at 50% load on gasoline, though propane offers only 5 hours at the same load, which may require more frequent refueling when using propane. The unit's portability is somewhat hampered by its substantial weight of 204 pounds, though the built-in wheels and handle do provide some mobility.

The generator includes an electric start, making it user-friendly, and features like the hour meter and low-oil shutdown help to maintain the engine's longevity. While its size and weight could be challenging for some users, the Generac 8011 GP7500E stands out for its power, dual-fuel capability, and extended runtime, making it a reliable option for both residential and commercial use.

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.

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.