HOCHBAHN is going carbon neutral

Together we’re reducing Hamburg’s eco footprint


Climate change affects us all! It is one of the most critical risks facing our world today. But we all have an important lever at our disposal when it comes to reducing CO2 emissions and meeting the 1.5 degree target set by the Paris Agreement: urban mobility. HOCHBAHN is well aware of the responsibility it carries on behalf of the city. Even now, 25% of Hamburg’s CO2 footprint can be attributed to mobility. By 2050, 70 to 80% of the world’s population will live in cities. That’s why we need to set ourselves an ambitious target:

By the end of the next decade, HOCHBAHN will be entirely carbon neutral!


How will we do that?


With 100% high-quality certified green electricity

By investing in zero-emission buses

With a fleet of vehicles that will be emission-free in the future

By reducing emissions produced from heating and cooling our operating and administrative locations

With compensation payments for any remaining CO2 emissions


We also keep a close eye on other indirect emissions, such as the CO2 footprint of procured products and services, and are working to continuously reduce these emissions as well.


Transporting Hamburg to a sustainable future:

The E-bus revolution on Hamburg’s roads

HOCHBAHN e-bus electric fleet
Dawn of a new era: one of the first HOCHBAHN e-buses in series production.

We’re in the process of replacing our fleet of some 1,000 diesel-fuelled buses with emission-free vehicles. The first “climate protectors” to roll off the production line are already driving passengers around Hamburg. And from 2020 onwards we will only be placing orders for e-buses. The entire HOCHBAHN fleet will be replaced by 2030. 

What’s more, our diesel-fuelled buses also emit considerably less nitrogen oxides and fine particles than their predecessors. Since 2018, only vehicles that meet Euro V and Euro VI standards have been in operation in Hamburg.

Learn more about the conversion of our fleet to e-buses here.


100 percent power – 100 percent green

Hamburg green electricity
Hamburg is driven by green energy – with HOCHBAHN
© www.mediaserver.hamburg.de / Aufwind-Luftbilder.de

It’s not only our new electric buses that are being refuelled with high-quality certified green electricity supplied by HAMBURG ENERGIE.

Our U-Bahn subway trains also run on green electricity from power plants that are no more than six years old. This means we save around 80,000 tons of CO2 every year.





100 family households in Hamburg...

LED lights saving electricity
The U1 stop Klosterstern with energy-saving lighting.

... could be supplied with the electricity that we are now set to save every year since replacing fluorescent lighting with LEDs in 2019.

400,000 kilowatt hours less electricity: that is the result of our drive in 2018 to replace lights at bus stops, in depots and works garages.





Saving for all it’s worth

As a member of the “UmweltPartnerschaft Hamburg”, the city’s Environmental Alliance, we have been focused on a strict drive since 2007 to cut down on our energy consumption and pollutant emissions. One of the ways we’re doing this is with flywheel energy storage. Our modern U-Bahn trains feed up to 40 percent of the energy generated during braking back into the traction current network. Other U-Bahn vehicles can then re-use this energy again. And if there doesn’t happen to be a train nearby that can use the energy, it is stored instead. Thanks to our two flywheel storage systems, we save a total of up to 800,000 kilowatt hours of energy each year.

Shorter stopping times also mean that our escalators save 140,000 kWh per year. After all, if nobody is using an escalator at a particular time, there is no reason for it to be moving.


Slamming for sustainability

science slam metro hamburg hochbahn
Slamming from Schlump to Schlump: It was all about eco-mobility on the “Research Ride” in the U-Bahn.

Research to go – without the plastic cups, of course! The “Research Ride” is getting its fast-paced messages about sustainability out to the people of Hamburg. The first of these rides was held on the U-Bahn in 2018 as part of Climate Week, and the event was back on the tracks and in full swing again in 2019. 

In the 45 minutes it takes to travel around the U3 ring line, young science slammers present their research projects on sustainability to the entertainment of passengers on this specially chartered train.