Skip to main content

LowCVP study identifies cost-effective options for cutting UK bus emissions

A new report prepared for the Low Carbon Vehicle Partnership (LowCVP) by Ricardo indicates that a wide range of innovative technologies can cut carbon emissions from buses and provide a short-term payback at current fuel prices and subsidy levels. The aim of the LowCVP study was to identify a range of low carbon fuels and technologies which can cost-effectively reduce well-to-wheel CO2 emissions for urban buses in the UK. The report developed technology roadmaps to illustrate when these technologies are lik
July 4, 2013 Read time: 2 mins
A new report prepared for the Low Carbon Vehicle Partnership (LowCVP) by 5606 Ricardo UK indicates that a wide range of innovative technologies can cut carbon emissions from buses and provide a short-term payback at current fuel prices and subsidy levels.

The aim of the LowCVP study was to identify a range of low carbon fuels and technologies which can cost-effectively reduce well-to-wheel CO2 emissions for urban buses in the UK. The report developed technology roadmaps to illustrate when these technologies are likely to be ready for deployment into the bus market, focusing on the timescales 2012-2020 and 2020-2050. The study also examined the wider role of the selected fuels and technologies for decarbonising heavy goods vehicles.

The report focuses on a variety of promising vehicle and powertrain technologies and a range of alternative fuels including compressed natural gas, biomethane, hydrotreated vegetable oil, second generation biodiesel and hydrogen.

The study confirmed a number of technologies such as full electrical hybrid with the potential to make very significant improvements of over 30 per cent to bus CO2 emissions, but showed that the most technically effective technologies can have high investment costs with payback periods as long as 20 years – and hence intervention in the form of subsidies or regulation is required to encourage their implementation.

The study also identified several technologies, such as mild hybrid and flywheel hybrid for which the emission benefit was slightly smaller, but still significant at up to 20 percent, and with payback periods of less than four years - which could be commercially feasible without subsidy.

In the area of fuels, the study showed that the use of biofuels can give significant reductions in well-to-wheels CO2 emissions. Biomethane could be particularly attractive as a drop-in fuel to replace fossil derived natural gas. However, available subsidies or incentives, the economics associated with developing an adequate infrastructure, and the price of the fuel itself will determine the rate of adoption.

Overall the study indicates that significant improvements in bus CO2 can be achieved in the medium to long term through development, incentivisation or regulation and implementation of new vehicle technologies and fuels.

Related Content

  • December 4, 2012
    Report identifies opportunities for road freight carbon and cost reduction
    Switching from diesel to gas, reducing rolling resistance and aerodynamic drag and introducing more hybrid and electric vehicles are identified as key opportunities for further cutting carbon and improving efficiency in the road freight sector, according to a new report commissioned by the Transport Knowledge Transfer Network (TKTN) and the Low Carbon Vehicle Partnership (LowCVP). The report, written by Ricardo-AEA for the project partners, focuses on the key technical opportunities, and identifies options
  • October 22, 2015
    LowCVP calls on truck operators and others to focus on cutting truck emissions
    To coincide with its participation in the new Freight in the City event on 27 October, the LowCVP is calling on fleet operators, local authorities and others to join forces in building the market for heavy goods vehicles which cut carbon, reduce emissions and lower fuel costs. In earlier research, the LowCVP has identified three main opportunities for cutting emissions from HGVs which pointed to the need for specific interventions: independent testing to validate the effectiveness of retrofit technology
  • December 11, 2013
    Study looks at air quality impacts of low carbon buses
    A new report prepared by Ricardo for the Low Carbon Vehicle Partnership (LowCVP) to review the air quality impacts arising from the recent rapid increase in the number of low carbon buses in the UK recommends that the legislation needs to consider hybrid technology impacts in the test processes to avoid potential unintended consequences in terms of local emissions. As they mainly operate in urban areas, local emissions from buses are of particular significance. Reviewing worldwide test processes for
  • February 12, 2016
    New LowCVP report: The Journey of the Green Bus
    A new report by the LowCVP for Greener Journeys describes The Journey of the Green Bus; how innovation and supportive policy over the last decade and more has transformed the bus sector from being a part of the problem to being an important part of the solution to poor urban air quality as well as contributing to tackling climate change.