Summary Points

In this section, the main aspects of the ISO 50001 standard on energy management system are described. It was advocated that a company EnMS is a useful, structured and systematic way for improving the corporate energy performance. Although the development of an EnMS is a voluntary undertaking by a company, its implementation by shipping companies will help them with more effective compliance with the IMO energy efficiency regulatory framework, environmental (climate change) protection and energy (fuel) cost savings (Ziarati et al, MariFuture, Development Papers, 2018-2019).