A recent report by the Environment Agency of the United Kingdom (UK) highlights the importance of sustainability and "best practices" for attaining GHG (greenhouse gas) emission targets in the generation of electricity and heat from biomass. According to the report ("Biomass: Carbon Sink or Carbon Sinner?"), "best practices can deliver up to 98% less emissions than coal", but worst practices can actually increase GHG emissions. An estimated 3 million tons of carbon dioxide per year can be saved by 2020 with best practices. Some strategies for "best practices" (as summarized by the Treehugger website) can be made on the following key factors: (1) type of crop: select one which has low emissions, for example the use of coppice chips attains 35% to 85% less emissions than natural gas, but the use of straw actually increases emissions by 35% or more, (2) land use change: the use of "formerly fallow land" can attain 10% savings in reduction emissions, but the use of permanent grasslands for biomass cultivation can entirely negate emissions savings, (3) Co-firing biomass, coupled with CCS (carbon capture and storage) technology. The full report can be accessed and downloaded at the UK Environment Agency (URL above)..