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In a bid to reduce its dependency on imported oil and tackle global warming, EU leaders have committed to raising the share of biofuels in transport to 10% by 2020, but concerns are growing that increased biofuel production could in fact lead to mass deforestation and food shortages.
A wide range of biomass products such as sugar cane, rapeseed, corn, straw, wood, animal and agriculture residues and waste can be transformed into fuels for transport. For more general information on biofuels, see the Wikipedia Biofuels
page. A good general introduction is also the UK Department for the Environment's brochure "The facts on biodiesel and bioethanol
".
Generally, a distinction is made between first-generation biofuels (mainly produced from crops such as sugar beet and rapeseed) and second-generation biofuels (from ligno-cellulosic or 'woody' sources and via new technologies to convert biomass to liquid (BTL)).
The two main first-generation biofuels are bio-ethanol and bio-diesel. Brazil and the US are the main producers of bio-ethanol; the EU has the largest production of bio-diesel, with Germany, France, Sweden and Spain in the lead.
The advantage of using biofuels is that they generally emit fewer greenhouse gases than traditional fuels from oil and gas and they are more abundant and domestically available. Another plus is that the domestic production of biofuels could help European farmers following reform of the Common Agricultural Policy as they offer new income and employment opportunities.
EU Policy developments:
The production of biofuels for transport faces several challenges:
Energy balance
There is controversy over the energy balance of biofuels production. The energy balance is the amount of energy needed over the life-cycle to produce biofuels (input) versus the amount of energy produced (output). According to studies by Pimentel and Patzek, it takes more energy to make ethanol than is contained in the ethanol itself. Other studies (eg. by the US Department of Agriculture) indicate that the energy balance is positive. For a good overview of the debate on the energy balance of biofuels, see "The energetics of ethanol: an introduction and link to studies".
Climate change reduction potential
In principle, biofuels are "carbon neutral": when they are used, no more carbon dioxide is released than has been absorbed during the growth of the plants used to make these biofuels. Therefore replacing fossil fuels with biofuels for transport could help in the fight against climate change.
But there are other studies that contest this conclusion. A study by Mark Delucchi
(Dec 2003) concludes that the use of biofuels could actually increase greenhouse gas emissions as land would be converted from forests, wetland and reserves for conservation to grow more corn or soya beans.
A report
published in May 2007 by the United Nations Energy division warns that whilst biofuels could produce a number of benefits, there is a considerable risk of increased CO2 production through the use of biofuels in transport. The report notes that with respect to reducing greenhouse-gas emissions, biofuels would be more appropriately used for combined heat and power production (CHP - EurActiv 10/05/2007) rather than for transport.
Land Use
Using agricultural land to grow bio-energy crops would compete with the use of land for food and animal feed production, driving up the prices of commodities like cereals. According to the EEA, reaching the initial 5.75% target of the biofuels directive would already require biofuel crops to take over between 4% and 13% of the total agriculture area of the EU-25.
Nevertheless a July 2007 study by the Commission's DG Agriculture foresees that reaching the new 10% target for biofuels in transport by 2020 would not "overly stretch the [EU's] land availability", requiring a "relatively modest" 15% of arable land, which it claims could be largely covered by "set aside" land, currently reserved under the Common Agricultural Policy in order to limit excessive production by farmers (EurActiv 27/07/07).
Environment and sustainability
Biofuels can have several environmental benefits such as reduced air pollution or reduction of waste. On the other hand, there are risks of more fertilisers and pesticides being used to grow energy crops. Biodiversity loss - especially in developing countries seeking to enter this growing market - is also an important risk as forests and grasslands are cleared to plant the vast quantities of crops needed to make a significant dent in the use of oil in transport.
Calls for binding "sustainability criteria" to be introduced in laws promoting increased biofuel use have therefore emerged from all sides. On the one hand, the Commission is proposing to introduce certain standards, including an obligation for biofuels counting towards the 10% target to deliver life-cycle CO2 savings of at least 35% compared to fossil fuels and a ban on biofuels planted in protected areas, forests, wetlands and "highly biodiverse" grasslands, in its proposed Renewables Directive
of 23 January 2008.
But MEPs and member states are arguing that those criteria are unlikely to be in place sufficiently early to prevent fuel makers from investing in cheap but dirty biofuels. Instead, they want standards to be set in a revised version of the EU's 1998 Fuel Quality Directive
, which is at a much more advanced stage of the decision-making procedure. MEPs are also insisting on tougher conditions, with, for example, biofuels subject to a 50% life-cycle CO2 reduction requirement compared to conventional fuels, as well as the introduction of social criteria.
A special ad hoc working group was set up at the end of February, with the aim of drafting "core criteria" for biofuels, that would be included both directives (EurActiv 01/04/08). So far though, a compromise has remained elusive.
Biofuel costs
Biofuels are more expensive than traditional fossil fuels. Therefore tax exemptions are needed to make them competitive. Second generation biofuels promise to be cheaper but are still under development (see LinksDossier on 2nd generation biofuels). In some countries like Brazil, biofuels can be produced at cheaper prices.
eBIO (European Bioethanol Fuel Association):
EBB (European Biodiesel Board):