10 Best 12000 Watt Generator 2025 in the United States

The Westinghouse 28000 Peak Watt Home Backup Portable Generator is a robust choice for those needing substantial power, boasting an impressive 20,000 running watts and 28,000 peak watts. This makes it suitable for heavy-duty applications like home backup during outages. It operates on gasoline, featuring a sizable 17-gallon tank that allows for up to 17 hours of run time at 25% load, ensuring long-lasting performance. The electric start with auto choke simplifies starting procedures, which is great for users who prefer convenience.

The unit is equipped with a range of outlets, including four standard household outlets and several high-capacity options, all with safety covers, providing versatility for different power needs. However, its substantial weight of 583 pounds compromises portability, making it less ideal for frequent transport. Users should have a stable setup in mind.

The generator includes protective features like automatic low oil shutdown and idle control, contributing to engine longevity and efficiency. A digital display offers helpful monitoring of run hours, volts, and frequency. With EPA compliance and a three-year warranty, it appears to be a reliable choice for residential use, backed by a supportive customer service network. It is ideal for those prioritizing power and reliability over portability and noise sensitivity.

The Westinghouse 13500 Peak Watt Tri-Fuel Portable Generator is a robust and versatile option ideal for home backup power. It offers significant power output with 13500 peak watts and 10500 running watts on gasoline, ensuring it can handle most household needs during an outage. Its ability to run on gasoline, propane, and natural gas adds flexibility and convenience depending on fuel availability.

The generator boasts a respectable run time of up to 19 hours on a 9.5-gallon fuel tank, which is quite impressive for long-term use without frequent refueling. Additionally, the remote electric start with a key fob, along with electric and recoil start options, enhances user convenience, especially during emergencies. It comes equipped with five outlets, including household, transfer switch ready, and RV ready options, all with rubber covers for safety.

The heavy-duty 500cc engine with a cast iron sleeve ensures durability, and features like automatic low oil and CO shutdown add an extra layer of protection. However, weighing in at 230 pounds, it is quite heavy and may not be the easiest to move around, despite its 'portable' label. The generator comes ready to use with minimal assembly and includes useful accessories like a battery charger, oil, and a tool kit. Backed by a 3-year limited warranty, it’s a reliable choice for those needing a powerful and versatile generator, though its weight might be a drawback for some users.

The Generac GP9500E Tri-Fuel Generator is a strong choice if you need up to 12,500 starting watts and about 9,500 running watts, which fits well for home backup, job sites, or RV use. One of its biggest strengths is the ability to run on three types of fuel—gasoline, propane, or natural gas—giving you flexibility when fuel availability varies. The electric start makes it easy to get going without manual effort, which is convenient during power outages. The generator also offers a good runtime of up to 9.5 hours at half load on a full 7.5-gallon gas tank, meaning it can keep your power going for a longer time without frequent refueling.

Portability is decent with heavy-duty never-flat wheels and a sturdy steel frame, but keep in mind it weighs 219 pounds, so moving it might require some effort. It includes three covered outlets, protecting them from dust and moisture, which is practical for outdoor use. The COsense technology adds an important safety feature by detecting carbon monoxide and shutting off the generator to keep you safe indoors or in enclosed spaces.

Noise levels are described as quiet operation for its size, but as with most generators providing this power, it will still produce noticeable sound. If you want a reliable, flexible fuel option generator with electric start and solid runtime, this model fits the bill well. It may feel heavy if you need to move it often, and while quieter than some, it’s not silent. For those needing a powerful backup or worksite generator with multi-fuel convenience, the Generac GP9500E is a practical and dependable choice.