10 Best Portable Generators 2025 in the United States

The Generac 7705 GP15500EFI is a powerful portable generator offering 15,500 running watts and 19,300 starting watts, making it well-suited for home backup, RV use, or job sites that require heavy-duty power. It runs on gasoline with a 5-gallon tank, supporting a long runtime during extended outages. One standout feature is the electronic fuel injection engine, which helps it run efficiently and more reliably than many traditional generators.

Safety is a priority with integrated COsense technology that detects harmful carbon monoxide levels and alerts you, important for both indoor and outdoor use. The generator includes six outlets protected by covers and a durable frame with heavy-duty steel tubing and never-flat wheels. Despite weighing 450 pounds, which may make moving it challenging, the wheels assist with mobility. The electric start simplifies powering it up without the need for pull cords.

Noise levels are described as quiet for its class, though it is not silent and may still be noticeable in quiet neighborhoods. Maintenance is simplified with an hour meter and low-oil shutdown to protect the engine. Though heavier and larger than some portable models, this generator delivers high wattage and safety features, making it a reliable choice for robust emergency power or outdoor use.

The DuroMax XP15000HXT is a powerful portable generator that delivers 15,000 starting watts and 12,000 running watts, making it a solid choice for whole-home backup during outages or for heavy-duty jobsite use. Its standout feature is the tri-fuel capability, allowing you to run it on gasoline, propane, or natural gas, which adds great flexibility depending on your fuel availability and preferences. With a large 13.2-gallon gas tank and efficient engine design, it offers lengthy runtime, especially useful in extended outages.

Portability is decent for a unit of this size, thanks to the included wheel and handle kit, but at 362 pounds, it’s not something you'd move around frequently by yourself. Safety is well-covered with an advanced CO Alert system that automatically shuts off the generator if carbon monoxide levels get dangerous, which is a valuable feature for home use. The control panel is user-friendly with push button and remote start options, plus a clear digital display showing fuel level, voltage, and other key info. You'll find a good variety of outlets including 120V and 240V options, and a 50-amp outlet compatible with transfer switches for easy home integration.

The generator’s large size and weight limit its portability for quick or light use, and its noise and fuel consumption could be a consideration for some users. This generator is best suited for homeowners or professionals who need reliable, flexible power and are comfortable handling a heavy, robust machine.

The DuroMax XP15000HX is a powerful portable generator designed to provide whole-home backup power with a peak output of 15,000 watts and 12,000 watts running wattage. It operates on both gasoline and propane, offering fuel flexibility that is especially useful during emergencies or prolonged outages. The generator is equipped with a strong 670cc engine featuring all-copper windings, which enhances durability and efficiency. Its fuel tank size and propane compatibility contribute to a solid runtime dependent on load and fuel type.

Portability is reasonable for its size, including wheels and a handle kit, but at 345 pounds, it is quite heavy and not ideal for frequent solo transport. Generators of this size typically produce considerable noise, so placement should be considered if noise is a concern. The XP15000HX includes a comprehensive set of outlets such as multiple 120V household GFCI outlets, 30-amp and 50-amp outlets, and is transfer switch ready, making it suitable for direct connection to home electrical panels or RVs. This versatility addresses different power needs effectively. Safety features include a built-in CO Alert system that automatically shuts off the generator if dangerous carbon monoxide levels are detected, enhancing user safety.

Additional features include remote electric start, a digital display for voltage and runtime, and easy switching between fuel types. Due to its size and weight, the generator is better suited for stationary use rather than frequent relocation. While propane is a cleaner, longer-lasting fuel option, the generator still requires regular maintenance and proper propane setup. The DuroMax XP15000HX is a robust and versatile choice for homeowners or businesses seeking reliable, high-capacity backup power, offering essential safety and outlet options suited for those who can manage its size and typical noise levels.