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More Performance. No Compromise.

Perfect power in a compact, fuel-efficient package.

Hatz has been producing high-quality diesel engines for over 140 years.

Founded in 1880 in Germany by Mathis Hatz, the company started as a repair business for agricultural machinery and locomotives. Today, Hatz is a global specialist in diesel engine construction with service partners in more than 120 countries. In 1978, Hatz established its North American headquarters in Waukesha, Wisconsin, operating engineering, service, and engine testing facilities. In the United States, Hatz engines are primarily used in OEM builds. 

Victron power systems capable of advanced control options, notably Power Assist, enable the use of smaller generators. Fully integrated communications also allow for the use of D.C. generators, further expanding system design flexibility.   

The Hatz fiPMG (flywheel-integrated permanent magnet generator) platform offers a perfect solution for smaller hybrid power systems. This low-speed, long-lasting generator has a small footprint and can produce perfect power thanks to the inverter output. Further, its variable speed technology and advanced controls package make the Hatz fiPMG one of the market's most efficient, high-performing generators. 

What makes Hatz our brand of choice in any off-grid, ESS, or hybrid power system?


Hatz diesel generators are built to work and built to last. With a broad product range, Hatz engines are used in mission-critical applications worldwide, including construction machinery, commercial vehicles, mobile communications, traffic safety, and in the various branches of the U.S. military.

Made with high-quality materials and Made in Germany, they are backed by technical expertise and a proven design philosophy. Hatz is an ideal choice when downtime is expensive, and reliability is a top priority. 


Hatz diesel generators are highly efficient and designed to minimize fuel consumption while maintaining high power output levels. In the past, we sized generators for the highest possible peak power, and depending on the use case, they worked hard and ran often (or continuously). In a hybrid power system, we can size a Hatz generator specifically for the battery bank - as it's now used primarily to charge the batteries rather than as the primary power source of the system. To learn more about how this works, read this article on Victron Energy's Power Assist function.  

Because it is a variable speed engine, or "inverter generator" system, a Hatz generator can operate at peak efficiency during its entire run cycle. This allows the generator to save fuel, run less (fewer emissions and noise), and extend the engine's life. These efficiencies add up quickly, making a Hatz fiPMG generator particularly attractive to those looking to reduce their carbon footprint and save on fuel costs.

Initial and Long-term Cost Savings

Selecting a smaller generator for an off-grid or hybrid system can lower the initial investment by thousands of dollars. In mobile applications, reducing the generator enclosure's footprint, transport weight, and required fuel offers immediate savings. 

These cost-savings continue throughout the system's lifetime; a well-designed and commissioned hybrid generator system can reduce fuel consumption by 40-80%.

All generators require basic service and maintenance per X hours of run time. Depending on the system's location, the cost of bringing in a qualified service provider can be extremely high in labor and organizational costs. 

Meanwhile, the cost of downtime in mission-critical systems or remote power systems can far exceed the cost of the equipment itself. Implementing systems that offer clear reliability improvements provides insurance to industries that put a clear dollar value on the often hidden costs of ownership. 

A final and often forgotten cost is one of reputation. Systems that perform as designed, with high reliability, are expected and rewarded in the market. 


When it comes to generators, reliability is King. The onboard battery charging functionality of Hatz generators ensures that systems always remain ready for use regardless of the battery's state of charge or the availability of an external power supply. This is particularly valuable for construction infrastructure such as electric road signs and outdoor lighting systems.

The definition of reliability has changed, however, especially when we begin integrating Hatz generators with Victron Energy power systems. 

Better communications bring greater reliability in the field 

The Hatz fiPMG is designed for IoT connectivity and fleet management solutions. We can already auto start/stop a generator from a Victron GX device, manage time delays, and other controls through the VRM portal. 

Expect to see more Victron integrations made possible through the native CAN bus control. 

This level of communication and remote access will allow the operator to: 

1) Proactively monitor indicators and schedule maintenance calls based on real-time and historical data. 

2) Verify that the generator is running at peak efficiency and make settings adjustments remotely. 

3) Set custom email alerts to identify potential problems, prevent system failures, and minimize system downtime. 

For more detailed information, get in touch with our team.

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