There is growing interest worldwide in biodiesel as an alternative fuel or blended supplement to diesel.

There is also rising concern about the actual carbon savings available through biodiesel. There is a potential for significant carbon emissions through land use changes to grow fuel crops.

There are also potential problems around competition with food supply chains for feed stocks and farmland.

As an introduction read our 'Practical Understanding of Biodiesel and its Uses' report.

The report bellow commissioned by NEP draws together the current available information on UK biodiesel policy, potential and issues for those considering a switch to biodiesel. The information is presented in plain English and meant for a non technical audience.

There has also been some excellent US work on biodiesel which can be accessed via the links below.

More recently there has been some significant work carried out by the EU (and the Department for Transport Renewable Fuels Agency to establish carbon emissions factors for biodiesel from various feed stocks and sources.

At the same time there is also growing interest in the use of biodiesel as a fuel in buildings, to meet tightening carbon and renewables requirements within building regulations and planning policies. The 2009 proposed revisions to SAP calculations, which are used to establish building regulations compliance, suggest the use of a very low carbon emissions factor for biodiesel.

  • Proposed SAP2009 emissions factors table12 pg 31
  • Methodology for SAP2009 biodiesel factors

To understand how the carbon emissions factors arising from these various pieces of work compare, we have pulled together a downloadable summary sheet below.

Biodiesel CO2 emissions factors.

Visit our 'vehicle fuel cost comparison' page.

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