In 2018, Alexander Dennis launched the Enviro400 EV all-electric variant on BYD Auto's K10 chassis, powertrain and batteries.
This 10.9 metre long variant is due to enter service in 2019 with Metroline in London and is the second electric bus model from Alexander Dennis, following 2016's launch of the Enviro200 EV, also in partnership with BYD.
The chassis, motor and battery are adapted from BYD's integral K10 10.2 metre double-decker (in service with Metroline in London since 2015) which achieves a 303km service range from a 320kWh lithium iron phosphate battery and two 150kW motors.

First York have placed the first order for Enviro400 EVs outside of London, with an unconfirmed number due for delivery towards the end of 2019 on York park & ride contract services.

Stagecoach Manchester ordered 32 Enviro400 EVs and were delivered in early 2020.
Stagecoach Cambridge received two and entered service in February on the Citi 6.

National Express West Midlands ordered 29 Enviro400 EVs, with the first 19 arriving in early 2020, and entering service in July 2020.
The other 10 are due to arrive at Coventry in the autumn.
In 2018, Alexander Dennis launched the Enviro400 EV all-electric variant on BYD Auto's K10 chassis, powertrain and batteries. This 10.9 metre long variant is due to enter service in 2019 with Metroline in London and is the second electric bus model from Alexander Dennis, following 2016's launch of the Enviro200 EV, also in partnership with BYD. The chassis, motor and battery are adapted from BYD's integral K10 10.2 metre double-decker (in service with Metroline in London since 2015) which achieves a 303km service range from a 320kWh lithium iron phosphate battery and two 150kW motors.
First York have placed the first order for Enviro400 EVs outside of London, with an unconfirmed number due for delivery towards the end of 2019 on York park & ride contract services.
Stagecoach Manchester ordered 32 Enviro400 EVs and were delivered in early 2020. Stagecoach Cambridge received two and entered service in February on the Citi 6.
National Express West Midlands ordered 29 Enviro400 EVs, with the first 19 arriving in early 2020, and entering service in July 2020. The other 10 are due to arrive at Coventry in the autumn.
Alexander Dennis Enviro400 MMC