Hydrogen bus fleet created to lead the energy transition ended up stalled due to lack of supply, drew criticism over public spending, and exposed difficulties in sustainable transport infrastructure in Europe
The city of Aberdeen, Scotland, invested in modern hydrogen buses to transform public transport into a benchmark for clean mobility. The double-decker vehicles were presented as a symbol of the future and as part of Europe’s commitment to sustainable energy.
The problem emerged when the supply stopped working. Without available hydrogen, the fleet itself was stalled for months, creating a situation considered contradictory even by proponents of the energy transition.
The information was released by The Scottish Sun, a British news and entertainment newspaper, and while the millionaire buses remained out of operation, auxiliary vehicles for the project began to use diesel.
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Hydrogen buses ran out of fuel and became a symbol of operational crisis
The initial proposal was to place Aberdeen among Europe’s most advanced cities in sustainable transport. The buses were acquired to reduce emissions and reinforce the use of technologies considered less polluting.
The strategy faced a basic problem: there was no fuel to keep the vehicles running. The refueling stations linked to the project went out of operation, and the buses stopped circulating for several months.
The situation drew attention because the fleet’s main differential depended entirely on the hydrogen supply structure. Without supply, the vehicles lost practical utility.

City saw millionaire vehicles sidelined for months
Hydrogen buses were considered an important part of urban transport modernization. The long period without circulation raised questions about the high cost of this type of investment.
The case also raised doubts about the actual pace of the so-called energy transition. The purchase of modern vehicles ultimately ran into the difficulty of maintaining continuous infrastructure operation.
The Scottish Sun, a British news and entertainment newspaper, detailed that even support cars linked to the project had to revert to diesel during the fleet’s downtime.
Lack of infrastructure became the main obstacle for the sustainable project
The shutdown showed that sustainable mobility projects depend not only on the vehicles but also on an infrastructure capable of keeping the supply running daily.
Hydrogen still faces significant challenges related to production, storage, and distribution. In many places, the necessary infrastructure remains limited, even in cities attempting to lead environmental projects.
The situation in Aberdeen ultimately exposed a difficulty that could affect other similar projects: modern vehicles can become unusable when the supply network does not keep pace with the investment.
Project’s contradiction drew attention inside and outside Europe
The case gained repercussion precisely because of the irony of the situation. The city bought buses considered future technology, but the vehicles were sidelined because there wasn’t enough fuel to supply them.

The image of the stalled fleet increased criticism involving public money and long-term planning. The situation also shook some confidence in hydrogen-powered transport projects.
Experts and authorities linked to the energy sector advocate for the advancement of clean technologies, but episodes like this show that infrastructure expansion remains one of the biggest challenges in the field.
Supply crisis cast doubt on the pace of energy transition
Aberdeen’s experience revealed that replacing fossil fuels requires more than just purchasing modern vehicles. The functioning of the supply network became central to ensuring the continuity of operations.
Without this structure functioning correctly, sustainable transport projects can face long interruptions and high costs. The episode also reinforced the debate about the speed of energy adaptation in different countries.
Even with the problems faced by the hydrogen bus fleet, governments and companies continue to treat hydrogen as one of the bets to reduce emissions in public transport in the coming decades.
Aberdeen’s situation showed that the future of clean mobility may depend less on vehicle technology and much more on the ability to guarantee fuel every day. The case became a real example of the difficulties faced by cities trying to accelerate the energy transition before the infrastructure is fully prepared.
If a modern city went months without being able to refuel hydrogen buses, do you believe this model can truly replace traditional vehicles on a large scale in the coming years? Share your opinion and join the discussion.

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