Welcome to the next generation: more choice, more flexibility, more value

Today, we launch our next generation of battery-electric buses for the UK and Ireland with the unveiling of our new Enviro100EV small bus and Enviro400EV double decker. A stunning new design language emphasises their zero-emission credentials and lets you make a landmark statement of your investment in a cleaner fleet.

? The 11.1m-length Enviro400EV double decker is designed to shift the crowds on busy urban and interurban routes with 472kWh batteries that give it a range of up to 260 miles.

? The Enviro100EV is a highly manoeuvrable small bus just 8.5m long and 2.35m wide, while feeling like a larger vehicle and covering up to class-leading 285 miles on a single charge of its 354kWh batteries.

“The pace of change in our industry is rapid. We are proud of the progress we’ve made with electric buses over the last seven years, and our wide range of low-emission technologies before that. Now it’s time for us to take the next step and take zero-emission buses to the next level.”

Innovation with leading technology partners

We've integrated the new zero-emission driveline in house, working with leading technology partners.

? Voith Turbo supplies the Voith Electrical Drive System (VEDS), which has been specifically developed for the requirements of urban and interurban buses. While the Enviro100EV uses the medium-duty variant of VEDS, the heavy-duty version is employed in the Enviro400EV for gradeability and maximum reliability even at higher operating speeds.

? A future-proof battery system has been developed in partnership with Impact Clean Power Technology S.A. Using NMC lithium-ion cells, it delivers a higher total energy throughput that will allow you to meet operational requirements with the original set of batteries for longer.

The battery packs are mounted within the chassis and rear of the vehicle as well as under the staircase of the Enviro400EV. Underfloor packs are mechanically isolated rather than directly bolted to the chassis, protecting them against external loads from twists and impacts that could cause premature failure.

If replacement batteries are needed during the operational life of a vehicle, they will benefit from advances in battery capabilities without the need for vehicle modifications as pack dimensions and interfaces with the vehicle are standardised. Impact is already planning a future iteration of NMC batteries for us that is expected to increase range even further.

Benefits for passengers, drivers and vulnerable road users

With battery locations optimised to balance weight distribution and avoid intrusion into passenger spaces, the Enviro400EV double decker has a conventional lower saloon layout with a flat floor, improving legroom for seated passengers and increasing overall passenger capacity by up to 19%.

The working environment for bus drivers has also been improved with a new steering wheel, configurable dashboard display and improved heating, cooling and ventilation in the cab.

A redesigned geometry of the vehicle front provides drivers with better direct vision and protects vulnerable road users. We’re applying proven principles from the car industry to buses by providing improved visibility for the driver, modifying the form of the front end to offer angles that deflect rather than impact, and reducing system stiffness to mitigate the risk of any impact that does occur.

Combined with further measures around the vehicle including latest assistance technologies such as speed limiting technology and audible warnings, our next generation of battery-electric buses meets current and upcoming targets of Transport for London 's Bus Safety Standard, for which we've been a development partner and were recognised with a TfL Supplier Award.

Industry-leading warranty and total cost of ownership calculation

The new Enviro100EV and Enviro400EV come with an industry-leading five-year warranty as standard. Paul Davies says:

“We believe that the thoughtful engineering, premium component specification and build quality should be backed up, and it will be. Our batteries have an eight-year warranty as standard, and an extension is available out to 12 years on a sensible commercial basis.”

We will work with you to model your operational requirements for our next-generation electric buses through an industry-standard multi-physics simulation, estimating the useful life of their batteries on the intended routes and producing running boards covering daily temperature and battery state of health.

Sample analysis shows that thanks to its class-leading energy throughput, the Enviro400EV will be able to cover two consecutive seven-year contract terms on typical Transport for London routes without a battery change, or typical provincial routes for up to 20 years with just one mid-life change of batteries.

With this route modelling and by factoring in finance options, power supply, maintenance costs and available grant funding, we will offer you a 20-year total cost of ownership calculation, and we can further support your transition to a zero-emission bus fleet by recommending funding partners, including those ready to underwrite a full 20-year term.

Fully supported by AD24

With the next-generation buses fully developed in house by our experienced team of engineers, they will be fully supported by our AD24 aftermarket division.

Spare parts will be stocked in the UK with 24/7 ordering through the AD24 website. Field service engineers have been equipped for the new components and trained by the AD24 Training Academy, which also offers bespoke training courses for customers at its own facility or on-site at operators’ premises.

Technical publications have been taken to the next level for the next generation, introducing fully interactive manuals that seamlessly link to technical support options and parts ordering in a single-login digital solution.

Completing the support suite is AD Connect, a new, bus-dedicated telematics solution that gives you the vehicle and fleet performance data you need as well as enhanced diagnostics, parts and repair information to further increase vehicle uptime. AD Connect is accessed directly through the AD24 portal or via integration into your existing fleet management systems.

Transformational manufacturing improvements

The Enviro400EV will be assembled in Larbert, where we have transformed our facility and overhauled our build process by introducing digital support tools and reducing the number of build stages to improve material, process and quality control.

These new working methods will be progressively rolled out to all of our sites including Scarborough, where the single deck production hall is being expanded along with the recently-announced addition of an off-site kitting and logistic facility.

This will benefit production of the Enviro100EV, which takes advantage of our global operations footprint before having its high-value components including axles, driveline, batteries, doors, seats and destinations fitted at Scarborough. Its chassis and body frame will be produced to our designs by our long-standing contract manufacturing partner in Zhuhai. Paul Davies explains:

“We are introducing a split-build philosophy for our new ‘big small bus’ that is founded on the success of almost 4,200 buses we have assembled in Zhuhai over the last 15 years. Taking a more global view to our manufacturing strategy will allow us to increase our overall capacity and keep us competitive.”

Completing the next-generation range

The Enviro400EV and Enviro100EV for the UK and Ireland are part of our wider family of Alexander Dennis next-generation zero-emission buses that also includes the three-axle Enviro500EV double decker for international markets, which we launched earlier this year in Hong Kong.

An international version of the Enviro100EV is under development, as is the autonomous Enviro100AEV and an open-top variant of the double deck Enviro400EV.

The next generation of Alexander Dennis battery-electric buses for the UK and Ireland will be completed in 2025 with a new Enviro200EV single decker that will also be fully engineered and built in house.

More information on our next-generation electric buses, including full technical specifications, is available on our website alexander-dennis.com.