Methane and Bio-methane in HGVs

Meeting: 
MQT on 2014-09-17
Session date: 
September 17, 2014
Reference: 
2014/3395
Question By: 
Murad Qureshi
Organisation: 
Labour Group
Asked Of: 
The Mayor
Category: 

Question

With reference to MQ 2014/2811 can you set out what evidence exists to suggest why using methane and bio-methane in HGVs is not suitable for urban operations? As stated, how is the evidence base related to this issue now being improved?

Answer

Answer for Methane and Bio-methane in HGVs

Answer for Methane and Bio-methane in HGVs

Answered By: 
The Mayor

Whilst it is possible to run engines on just methane or bio-methane, these engines have high fuel consumption levels, leading to higher expense and, for standard methane, higher CO2 emissions. Most HGVs using these fuels use them as "dual-fuel" where diesel fuel is still burned to act as a pilot to ignite the methane or bio-methane.

The emissions benefits of "dual-fuel" are likely to be reduced in urban conditions where a greater proportion of low speed or idling occurs, although there are other benefits, such as reduced noise. The best results for reducing emissions are achieved under the high load conditions seen in motorway long distance type operation.

To support its recently published Transport Emissions Road Map, TfL is currently working with Government and industry experts to strengthen the evidence base in this area. This will take into account a two year Technology Strategy Board funded Low Carbon Truck Demonstration (concluding in December 2015), which will provide hard evidence of the efficacy of methane and bio-methane HGVs in different environments.