Ballard Power Systems is set to supply a total of 1,000 hydrogen fuel cell units to Polish-based Solaris Bus & Coach under a new long-term supply agreement (LTSA).

Made up existing orders for around 300 fuel cell engines, the LTSA adds a new supply commitment for an “incremental” 700 fuel cell systems – representing the largest order in Ballard’s history.

Around 80% of the units will be Ballard’s FCmove® HD 70kW systems, while the remaining 20% will be the HD+ 100kW units to meet Solaris’ 12-metre and 18-metre bus requirements.

With deliveries set to start in 2024 and run through to the end of 2027, the units are expected to be deployed in buses across Europe.