Leaked EU documents rank biofuel emissions higher than crude oil European Union politics website EurActive has gotten its hands on official EU data reporting that many biofuel crops release more carbon dioxide than crude oil, and approximate the emissions of the much-maligned oil mined from tar sands.
The numbers were intended for release in the spring when the EU presents new proposals on biofuels, and an official spokesperson refused to comment to EurActive. 
The European Commission has long defended biofuels, despite dissent from Greenpeace and other environmental organizations. Its current biofuel roadmap demands that at least 5.75% of all energy sold on the market of any member country be biofuel, boosted to 10% by 2020.
However, also in the biofuel directive is that biofuel production should be sustainable, and the new numbers suggest that it is not. The leaked data present higher carbon costs for biofuels because, for the first time, the analysts incorporated the effects of indirect land use change (ILUC). ILUC is the rise in emissions when forests and wetlands are destroyed to clear land to grow biofuel crops.
And with ILUC added to the mix, it looks like some top biofuel crops are worse for the environment, in terms of carbon emissions, than crude oil. The EU's default value for measuring carbon efficiency for oil from tar sands is 107g CO2 equivalent per megajoule of fuel (CO2/mj). Meanwhile, crude oil's efficiency value is 87.5g CO2/mj.
Here are the data (g CO2/mj) from the EU documents, incorporating ILUC, for various biofuel crops, thanks to EurActive:
Palm Oil - 105g
Soybean-103g
Rapeseed  - 95g
Sunflower - 86g
Palm Oil with methane capture - 83g
Wheat (process fuel not specified)  - 64g
Wheat (as process fuel natural gas used in CHP) - 47g
Corn (Maize)  - 43g
Sugar Cane  - 36g
Sugar Beet  - 34g
Wheat (straw as process fuel in CHP plants)  - 35g
2G Ethanol (land-using)  - 32g
2G Biodiesel (land-using) - 21g
2G Ethanol (non-land using)  - 9g
2G Biodiesel (non-land using) - 9g
If European politicians recognize these figures and decide to take action on them, it's not clear what they should do. The top biodiesel crops -- palm, soybean, and rapeseed oil -- are all the least energy efficient. However, they are also the cheapest to produce, which is why they reign at the moment.
Photo: Achmad Rabin Taim/Flickr
[via Nature News]