Alexander Dennis uses automotive industry-standard modeling tools to calculate indicative illustrations of efficiency, range, and battery degradation under real-world conditions for an operator’s specific routes.  -  Photo: Alexander Dennis

Alexander Dennis uses automotive industry-standard modeling tools to calculate indicative illustrations of efficiency, range, and battery degradation under real-world conditions for an operator’s specific routes.

Photo: Alexander Dennis

Alexander Dennis, a subsidiary of NFI Group Inc., announced its next-generation Enviro400EV electric double decker has completed the Zemo Partnership’s zero-emission bus testing and certification program.

The work, which was undertaken at UTAC’s approved test facility at Millbrook Proving Ground, confirms an average energy consumption of just 0.67kWh/km across the UK Bus Cycle. The findings make thenext-generation Enviro400EV the most efficient battery-electric double decker tested to Zemo Partnership standards to date, delivering a 10% efficiency advantage over competitors’ vehicles of comparable battery size, according to Alexander Dennis.

The UK Bus Cycle

The UK Bus Cycle represents a mix of common operating conditions with separate phases modeled on inner urban, outer urban, and rural routes.

Alexander Dennis officials said thanks to its use of the heavy-duty version of the Voith Electrical Drive System, the Enviro400EV is extremely efficient across all parts of the cycle including the demanding inner urban element, ensuring operators will be able to minimize their energy costs even on highly intensive services in places, including London.

Combined with the Enviro400EV’s future-proof battery system, which is supplied by Impact Clean Power Technology and allows 88% of its 472kWh capacity to be used, the 0.67kWh/km energy consumption in the UK Bus Cycle gives the electric double decker a theoretical operating range of up to 385 miles on a single charge.

Alexander Dennis’ Modeling Tools

Alexander Dennis uses automotive industry-standard modeling tools to calculate indicative illustrations of efficiency, range, and battery degradation under real-world conditions for an operator’s specific routes.

The multi-physics simulation is conducted in collaboration with operators and is the most reliable guide to actual performance on any given duty cycle, according to Alexander Dennis officials.

About the Zemo Partnership

The Zemo Partnership certifies vehicles following independent physical testing to ensure public money, such as the UK Government’s Zero-Emission Regional Bus Areas (ZEBRA) or the Scottish Government’s Zero Emission Bus Challenge Fund (ScotZEB), supports proven zero-emission vehicle technologies that will perform in service.

The certificates provide an independent means for operators to compare different suppliers and technologies on a like-for-like basis.

In addition to demonstrating the Enviro400EV’s exceptional energy efficiency, its zero-emission bus certification also confirms that its well-to-wheel greenhouse gas emissions when charged with UK grid electricity are 84% lower than those of an average Euro VI diesel equivalent vehicle.

Over 150 next-generation Alexander Dennis Enviro400EV have been sold to date to customers including Stagecoach and Transdev, with deliveries of the first completed vehicles now imminent

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