Swiss Federal Railways (SBB CFF FFS) is Switzerland’s national railway company, headquartered in Bern, operating the country’s passenger and freight rail network as well as real-estate and energy assets. Founded in 1902, it is a federally owned enterprise central to Swiss mobility, running low-carbon rail powered largely by hydroelectricity.

Deutsche Bahn AG is Germany’s national railway company, headquartered in Berlin, operating passenger and freight rail, infrastructure and logistics services in Germany and internationally. It was formed in 1994 through the merger of the former West and East German state railways. Its Green Transformation strategy targets climate neutrality by 2040 and expanded renewable traction electricity.

Siemens AG is a global technology company headquartered in Munich, Germany, focused on industry, infrastructure, mobility, and healthcare. Founded in 1847, Siemens develops technologies for resource-efficient factories, resilient supply chains, intelligent buildings and grids, and sustainable transportation. Through its DEGREE sustainability framework, the company pursues ambitious targets in decarbonization, ethics, governance, resource efficiency, equity, and employability, aiming for net-zero operations by 2030.

Shell plc is a British multinational energy company active in oil and gas exploration and production, refining, marketing, and low-carbon energy solutions, headquartered in London with origins in 1907. Its sustainability focus is the energy transition, emissions reduction, and a target of net-zero emissions by 2050.

TotalEnergies SE is a multi-energy company headquartered in Courbevoie, France, tracing its roots to 1924. It produces and markets oil, natural gas, LNG, renewables, and electricity around the world. Its strategy pairs oil and gas with a growing low-carbon electricity business, targeting net-zero emissions by 2050.