Alexander Dennis battery-electric buses have achieved 97% grid-to-wheel charging efficiency under testing performed by Zemo Partnership.
Such a level of efficiency forms part of the manufacturer’s focus on total cost of ownership (TCO) for its battery-electrics, which also leans on those buses’ low energy consumption. Alexander Dennis says that its next-generation Enviro400EV double-decker has at least a 14% lower energy cost per kilometre than any other Zemo Partnership certified competitor.
Such charging efficiency has been accomplished via what Alexander Dennis describes as “careful system integration and optimisation.” Its engineers worked with colleagues from driveline supplier Voith, battery provider Impact Power Technology, and heating, ventilation and air-conditioning specialist Grayson Thermal Systems in that process.
TCO is further aided by the warrantable battery energy throughput of up to 1.6GWh on the next-generation buses.
Speaking about that line-up of vehicles – which in 2025 will see the Enviro200EV join the existing Enviro100EV and Enviro400EV – Group Engineering Director Chris Gall says: “We have focused on delivering benefits for our customers throughout the development of our next-generation electric buses.
“We are delighted announce a stunning 97% grid-to-wheel efficiency, certified by Zemo Partnership’s zero-emission bus testing. This will minimise energy requirements and slash costs for customers by delivering sustained savings throughout their buses’ long operational lives.
“This is once again testament to the fantastic expertise of our engineering team and the collaborative working culture we have fostered with our key partners Voith, Impact Clean Power Technology, and Grayson Thermal Systems.”
