No smoke with this fire (engine) – London’s brigade goes electric

Tom Barnard

4 Oct 2022

The London Fire Brigade is to take delivery of its first Zero Emission Capable Pumping Appliance (ZEPA1) – a fire engine which is capable of running entirely on electricity. 

The Brigade will be the first fire and rescue service to use an electric-hybrid fire engine when it is due to start being trialled later this year. It is hoped the project will help grow the market for zero emission specialist vehicles in the UK’s emergency services.

Developing zero emission solutions for fire engines is particularly challenging as they have demanding performance requirements – not only do these heavy vehicles have to attend incidents as soon as possible, but they also have to be able to pump water for long periods of time, and transport equipment and machinery to deal with fires, flooding and other incidents. 

The ZEPA1 is based on a Mercedes truck and has a 1,750 litre water capacity and can also carry 100 litres of foam. It has a 280kWh battery giving a 200 mile range. There is also a small ‘range extender’ petrol engine which can be used in (bigger) emergencies. 

ZEPA1 has minimal spec differences to the Brigade’s existing 143 fire engines. It has a range of over 200 miles, can pump water continuously for four hours, has air conditioning and heating and the same control systems.

It is planned to be trialled as a frontline fire engine later this year and is capable of meeting all of the Brigade’s demanding operations – ensuring it will carry out the work of a standard diesel appliance in travelling to a fire, pumping the water required to put it out, and travelling back to the station. 

Hybrid Fire engine, Side view ZEPA1 is based on a Mercedes chassis and has a 200 mile range

A total of 96% of all the Brigade’s buildings have electric vehicle charge points, with 242 charging sockets. A further three fire stations have publicly accessible rapid charging. 

There are more projects to further reduce emissions from the Brigade’s vehicle fleet. A project is underway to assess the use of Hydrogenated Vegetable Oil in existing fire engines that are fuelled from the Brigade’s bulk fuel tanks. It is expected that this could contribute a carbon emission saving of 24% from fleet fuel consumption. This work is also being supported by a project on-going to replace the fleet of electric-hybrid cars with 50 fully electric vehicles. 

London Fire Commissioner Andy Roe said: “Our first priority is always to ensure the Brigade provides a first-class prevention, protection and emergency response service for London. But for some time we have been looking towards a more sustainable future and working to identify the challenges and solutions to ensure that we as a fire service can move to a zero emission fleet. 

“ZEPA1 is a very big and exciting step for us and the whole of the UK fire service and we are incredibly proud to be part of the innovation that will lead to the UK’s first electric-hybrid fire engines at one of our fire stations. It is hoped that in leading the way on developing an electric-hybrid fire engine, the project will help drive and grow the market for zero emission specialist vehicles in the UK’s emergency services and particularly in the fire service.”

The i3 can't hold quite as much water, but is part of the fleet electrification plan too

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