Technology group Wärtsiläs hybrid power module, Wärtsilä HY, has been granted Approval in Principle (AIP) by ABS, a global provider of classification and technical advisory services to the marine and offshore industries. This AIP follows another issued by ABS in 2017 for Wärtsiläs hybrid propulsion tug designs. The Wärtsilä HY hybrid power module combines engines, an energy storage system and power electronics optimized to work together through a newly developed energy management system. According to Wärtsilä, it is the marine sectors first hybrid power module of this type ever produced. This AIP is an important step in the development of our eco-friendly hybrid propulsion system, which can be applied to a variety of vessel types, said Giulio Tirelli, director, sales and business intelligence, Wärtsilä Marine Solutions. By working with ABS, we are demonstrating the viability of hybrid vessels in a range of applications and highlighting the capability to the US market and further afield. Demetri Stroubakis, ABS director for equipment and materials, added: This is the latest example of how ABS is collaborating globally with innovative companies like Wärtsilä to expand approval of hybrid designs for power and propulsion options. We recognize the significant economic and environmental benefits of hybrid-powered vessels and are committed to supporting the development of alternative power applications that optimize efficiencies.