The Amendment has been in force since November what types of biomass may be used for energy and biogas generation, and under which conditions; a ban on the use of human food as biomass for the above purposes; that the use of animal feed and renewable crops grown as energy sources and agricultural residue for fuel is only permitted within the corresponding national or EU legal boundaries- and only insofar as it does not distort local or global price stability and security of supply; 27 of 132http://www.eon.com/en/responsibility/29226.jsp created on: 05/03/2011 that timber and other forestry products may only be used for energy and biogas generation insofar as they are certified to meet corresponding international standards such as FSC and PEFC.