Aberdeen’s hydrogen bus withdrawal highlights a wider lesson for councils: ambitious net zero goals must be matched by commercially viable infrastructure. As authorities invest in zero-emission fleets, the challenge is no longer proving technology works but ensuring it can scale under real-world financial and operational pressures, says Mike Nakrani, CEO of VEV.
Ambition is not the problem. Ensuring the economics stack up is.
Aberdeen City Council’s decision to withdraw its hydrogen bus fleet from service recently is not an isolated case. Across several international deployments, operators have encountered similar challenges, volatile fuel costs, supply constraints and lower-than-expected infrastructure utilisation. In some cases, fleets have scaled back deployment while reassessing the long-term economics.
Hydrogen buses proved the technology can work in principle. But transport decarbonisation is not a pilot project. It is a multi-decade capital programme that must withstand energy volatility, operational pressure and fiscal scrutiny.
Hydrogen shows the limits of pilot thinking
Hydrogen infrastructure is capital-intensive and sensitive to utilisation and fuel pricing. It depends on consistent supply, predictable costs and strong fleet volumes to remain viable. Without scale and price stability, the economics weaken quickly.
Aberdeen is not an isolated case. Across several hydrogen bus deployments internationally, operators have encountered similar challenges, from volatile fuel costs to supply constraints and lower-than-expected infrastructure utilisation. In some cases, fleets have scaled back deployment while reassessing long-term economics.
The details may vary, but the structural lesson is the same: if a system depends on a stable fuel supply, predictable pricing, and high utilisation to remain viable, the financial risk is concentrated. Public capital needs to back solutions that scale commercially, not just technically.
More than 5,000 zero-emission buses already operate across the UK, the vast majority battery-electric. That shift did not happen because battery technology is fashionable. It happened because the operating model has increasingly been working.
But there is a second lesson here and it applies equally to battery fleets.
Buying buses is rarely the hardest part. Power is.
Across the UK, fleets have procured significant numbers of zero-emission vehicles before grid capacity, connection timelines or charging design were fully aligned. The result is not technological failure. It is a sequencing failure.
Effective depot electrification doesn’t require a plug for every bus running at full power simultaneously. In most municipal operations, vehicles dwell for long periods. Charging can be staggered. Load can be modelled. Peak demand can be controlled.
With proper operational data and smart charging systems, depots can support far more vehicles than a simple ‘charger-per-bus’ assumption suggests, often with materially lower grid capacity than headline calculations imply.
Over-specification drives unnecessary capital spend. Under-planning creates delay and stranded assets. The discipline lies in right-sizing infrastructure around real duty cycles, not maximum load.
Fleet electrification only works when the economics work. If operating costs rise and capital payback stretches indefinitely, the model will not scale.
Capital decisions shape fleet strategy for decades
Borrowing costs matter. Revenue implications matter. Assets must perform over decades.
Local authorities are not venture capital funds. They cannot afford to underwrite infrastructure that depends on perfect market conditions.
Once a depot is built and grid capacity secured, it shapes fleet decisions for 15–20 years. That is a long time to be locked into an energy model that requires continuous subsidy, perfect utilisation or volatile input pricing to remain viable.
Who carries the risk?
When these projects sit inside trading companies or joint venture structures, the question becomes simple: who carries the risk?
Hydrogen infrastructure concentrates risk. Poorly planned electrification can do the same. Properly designed electrification distributes and manages it.
When intelligently structured, depot electrification can be phased and optimised. It can integrate on-site solar and storage to manage price volatility. It can support multiple fleets within shared infrastructure models. Crucially, it allows exposure to risk to be staged rather than concentrated.
None of this is an argument against innovation. Hydrogen may yet play a role in industrial processes or certain heavy-transport niches. But city buses were always a demanding proving ground. They require cost control, operational simplicity and long-term reliability.
The lesson from Aberdeen is not to retreat from decarbonisation. It is to apply greater commercial discipline.
Electrification is not inherently a burden on the grid. Poorly managed electrification is. The same is true of capital planning.
For those considering a fleet transition – whether that’s to electric buses, HGVs and refuse collection vehicles (RCVs) or to more complex set ups of shared depots or multi-fleet charging infrastructure, the questions are straightforward: Can this scale without continuous subsidy? Can it absorb energy volatility? Can it expand without a major redesign? Does it strengthen the long-term operating position?
If the answer is no, it’s not a transition strategy. It is a trial.
Net zero will not be delivered by backing the most eye-catching technology. It will be delivered by backing the one that works, commercially, operationally and at scale.
Ambition matters. But only economics makes the transition scale.
Photo: © Egor Litvinov
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