Mar 21, 2019 Affordable and clean energy Sustainability By connecting a vessel to the local electrical grid when in port, we reduce the CO2 emissions with close to 14,000 tonnes/year. This is equivalent to the annual emissions of 7,500 passenger cars. We connected our first ship to the grid already in 1989. In 2018 yet another power supply connection was inaugurated, this time in the Port of Oslo, making Stena Saga our 14th vessel to be upgraded. Presently 14 of our ships and six of the terminals operated by Stena Line are equipped with electric shore power supply. Discussions are underway for further installations in Denmark and Germany.