52
H₂ buses
in operation
~25 %
of all fuel cell buses
in Germany (2025)
1 million+
km driven –
no failure
16 t
H₂ per month,
delivered on schedule
500 km
Range
per tank of fuel
THE PROJECT
From climate target to bus route – without detours.
Rebus Regionalbus Rostock has set itself an ambitious goal: From 2034, only emission-free vehicles will be on the road. H2APEX makes it possible – and has been providing proof since 2023 that this is not a vision of the future, but everyday life on northern Germany’s roads.
Since spring 2023, H2APEX has been responsible for the complete hydrogen supply of the Rebus fleet: production, refueling infrastructure, logistics and ongoing operations – all from a single source. The green hydrogen is produced directly at the Rostock-Laage site, RFNBO-certified in accordance with EU guidelines and powered by the company’s own 11.5 MWp solar system.
Today, almost a third of the Rebus fleet runs on hydrogen. This corresponds to around 25 percent of all fuel cell buses in use throughout Germany.
Everything from a single source. From the initial plan to ongoing operation.
Planning & approval
Feasibility study, expert reports, approval procedure and documentation – H2APEX managed the project as a strategic planner right from the start.
Infrastructure
Two H₂ filling stations at the Rebus depots in Güstrow and Bad Doberan, built and operated by H2APEX. Stationary storage tanks with a capacity of around 2,300 kg.
Production & Logistics
Green hydrogen from our own electrolysis, powered by renewable electricity. Optimized filling and transport logistics directly from the production site.
Service & Operation
H2APEX operates the systems, maintains them and is available around the clock. Rebus employees have received comprehensive training in the new tank technology.
Reliability as an operating condition.
In summer 2025, the fleet cracked the million-kilometer mark. No breakdowns, no interruptions, no routes canceled. Since July 2025, H2APEX has been delivering the 16 tons of hydrogen required each month as planned – just nine months after the start of regular bus operations.
1 million+
160 t
9 months
2034
Photos Videos
With H2APEX, we are currently creating the infrastructure for the use of green hydrogen for our local transportation. We have come to know and appreciate H2APEX as a reliable partner and specialist for green hydrogen.
Project data
H2 Quantity:
The project can produce 300,000 kilograms of hydrogen per year. This is the amount of hydrogen needed to supply the regional buses and significantly reduces the environmental impact of fossil fuels.
Mobile storage:
H2APEX has developed its own mobile storage solutions that enable flexible and efficient refueling of buses on the road.
Stationary storage:
The stationary storage capacity of 2,347 kg ensures that a sufficient quantity of hydrogen is available at all times to meet demand. In this way, gaps in supply can be avoided and a reliable planning basis is created for the bus companies.
For comparison: a typical hydrogen bus requires around 10 kg of hydrogen for 100 km. With 2,347 kg of hydrogen, around 235 buses could be refueled for a distance of 100 km.
Refueling:
Approx. 10 minutes per bus at 25 kg. The hydrogen filling station is capable of refueling 52 buses in 16 hours. Refueling takes place via a mobile hydrogen trailer.
Information:
H2APEX has been operating the first hydrogen filling station for heavy goods vehicles in Mecklenburg-Vorpommern since 2022. This enables trucks, buses and cars to be refueled with climate-neutral hydrogen.
Space requirement:
80-100 m²
Hydrogen quality at the pump:
ISO 14687 / DIN EN 17124
CO2 reduction:
2 million kg per year