Heavy Duty System 100 is a very powerful fuel cell system that enables durable and flexible use, with an electric output of up to 100 kW. The system has been tested and developed according to the standards in heavy duty applications. Heavy Duty System 100 is specifically designed to accomplish compact integration together with a high power output. The system has a robust construction for fast, dynamic and stable load operations. The fuel cell stack with steel-based bi-polar plates ensure lasting and reliable use in a wide range of conditions with an operational time of 20 000 hours.