The Anonymous Widower

Who Have Bought Wrightbus Ultroliners With Cummins Engines?

In their web page, which describes the Wrightbus Ultroliner EU6, this paragraph describes the powering options.

The StreetDeck Ultroliner EU6 is available with two ultra low emission efficient diesel engine choices: the new Cummins 6.7 litre 6 cylinder and the current Mercedes 5.1 litre 4 cylinder engine. Our StreetDeck EU6 Ultroliner and its engine choices remains the UK’s favourite. All these buses can be repowered at mid-life to zero-emission BEV technology with NewPower.

But I believe that there is another repowering option – The Cummins engine can be converted to hydrogen to create a zero-emission bus, with an internal combustion engine.

Cummins Accelerates Work On Hydrogen-Fueled Internal Combustion Engines

Cummins Fuel-Agnostic X Series Platform shows a Cummins video about their fuel agnostic technology.

In Do Cummins And Stadler Have a Cunning Plan? I point out how Stadler could be making Class 99 locomotives with Cummins engines, that could be designed for conversion to hydrogen.

These engines are also probably made in Darlington

What Did Google AI Reply To The Question In The Title Of This Post?

Several transport operators have purchased Wrightbus StreetDeck Ultroliners equipped with Cummins engines. This highly efficient, ultra-low-emission diesel combination has been specifically chosen by operators where battery-electric vehicles are not viable for certain long-distance or high-mileage routes.

The known buyers include:

Bus Vannin: The first operator to order the next-generation Ultroliners with six-cylinder Cummins B6.7 engines. They placed an order for six vehicles which entered service on the Isle of Man, including two carrying special heritage liveries.

Nottingham City Transport (NCT): Ordered six StreetDeck Ultroliners. They are powered by the Cummins B6.7 engine paired with Voith gearboxes, specifically for their long-distance Pathfinder 26 route.

Go North East: Listed as an early operator to order the Wright StreetDeck featuring the Cummins engine.

Metroline Manchester: Acquired a large batch of 135 facelift StreetDeck Ultroliners (ordered via Transport for Greater Manchester) for rollout on the Bee Network.

Out of fairness, I asked Google AI,”Who have bought Wrightbus Ultroliners with Mercedes engines” and received this reply.

The vast majority of Wrightbus “Ultroliner” double-deckers feature Cummins engines.

Nottingham City Transport To Upgrade Pathfinder Route with Order For Brand New Wrightbus Double Decks

I found this press release on Nottingham City Transport’s web site, which is an interesting read.

These are the first two paragraphs.

UK Bus Operator of the Year, Nottingham City Transport has partnered with pioneering manufacturer Wrightbus to upgrade its long distance Pathfinder bus service between Nottingham, Burton Joyce, Lowdham and Southwell.

Six brand new ultra-low emission diesel powered double decks will soon start to be built by Wrightbus at their factory in Northern Ireland and will start carrying passengers in late autumn this year.

David Astill of NCT and Jean-Marc Gales of Wrightbus, then explain the industry-leading technology behind the buses. It results in an 80 % emission reduction compared to the previous 2014 buses.

Jean-Marc Gales finished with this.

Our blended approach to responsible technology, which includes battery electric, hydrogen fuel cell and the cleanest technologies, ensures our customers can continue to decarbonise while maintaining financially viable operations.

It appears to me, that this is the sensible way to go, as the operator can always choose what is best for their network.

Nottingham City Transport’s Ultroliners

These are some pictures I took of the buses on my trip to Nottingham.

Unfortunately,  I didn’t have enough time for a ride.

Hydrogen And The Isle Of Man

I asked Google AI, the title of this section and received this answer.

On the Isle of Man, hydrogen is viewed as an unviable option for domestic heating due to high production costs and economies of scale.

However, the island’s government and local energy providers see potential for the fuel in heavy transport, maritime shipping, and achieving long-term energy independence.

Policy and Energy Strategy

Heating and Homes: Extensive energy analysis by the Isle of Man Government has concluded that hydrogen is not economically feasible for home heating. High costs and infrastructure limitations favor alternatives like heat pumps, which boast much higher efficiencies for everyday domestic use.

Energy Independence: While domestic heating is a poor fit, producing green hydrogen using the island’s future offshore wind or tidal renewable resources is occasionally discussed as a way to achieve total energy security and independence.

Network Readiness: The existing high-pressure pipeline network that transports natural gas to the island is not compatible with 100% hydrogen, though some smaller localized parts of the distribution grid could potentially be adapted.

Proposed Applications & Industry

The Steam Railway: The Isle of Man Steam Railway has faced proposals from private inventors to convert historic heritage locomotives to run on green hydrogen.

Maritime Shipping: Because the Isle of Man is a prominent maritime hub, green hydrogen production could theoretically serve as a valuable refueling point for future hydrogen-powered commercial shipping fleets.

Utility Diversification: Isle of Man Energy (formerly Manx Gas) has highlighted green hydrogen and biogas as part of their long-term corporate diversification plans away from natural gas.

My further thoughts on hydrogen and the Isle of Man

  • There may also be some difficult-to-decarbonise businesses on the Island.
  • The Isle of Man is also a holiday island and getting rid of diesel commercial vehicles could be advantageous.
  • Will Centrica setup an electrolyser on the island and do a bit of bunkering?

It appears to be an island with great potential for hydrogen.

Conclusion

My final thoughts.

  • I believe that Wrightbus have designed a diesel bus, that can replace existing diesel buses, without changing the buses to either battery or hydrogen operation.
  • But once the operator has made provision for the electricity or hydrogen for the buses, then the buses can be converted to zero carbon.
  • My project management knowledge would say, that there is an optimum rate at which new technology buses can be introduced.

It looks a good plan.

 

June 1, 2026 - Posted by | Artificial Intelligence, Hydrogen, Transport/Travel | , , ,

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