The city of Hamburg has nearly 2 million residents and more than 5 million people living in the greater area of Hamburg. Of its 1.26 million workforce, about 240,000 are commuters. The city has passed a mobility transformation bill, aimed at significantly reducing CO2 emissions from the transport sector. Furthermore, in February 2020, the Hamburg Climate Protection Law was passed as the binding legal framework for the climate action plan of Hamburg. This defines the city's goal of reducing carbon emission by 55% (2030) and by at least 95% (2050).
The Hamburger Hochbahn, the city's U-Bahn and bus operator, plays an important role in Hamburg's ambitious climate neutrality plan. Around 1.2 million passengers are using the four U-Bahn lines and 114 bus lines. More than half of all public transport services with the Hamburg Public Transport Association are provided by the Hochbahn. The Hochbahn targets to increase the share of public transport in total traffic in and around the city from currently 22% to 30% by 2030. The company also tries to achieve climate neutrality by 2030. Therefore, capital expenditures are needed to acquire new electric trains and buses. This will minimize emissions from its own operations and maximize its efficiency in using resources in an environmentally friendly way.