The derivation of fuel from biomass in managed forests (“forest fuels”) is an alternative way of obtaining bioenergy to replace fossil fuels. There are different ways for recovering, storing and handling forest fuels; and each method has a different implication on carbon dioxide emissions. A comparative analysis of different forest fuel systems (with focus on recovery and transport systems) was made by Lisa Eriksson of Mid Sweden University. Using a “systems analysis methodology in a life cycle perspective”, factors such as cost, primary energy use and carbon dioxide emissions were analyzed. A large scale, long distance transportation of biofuels from Central Sweden was shown to be “cost-effective and attractive” with respect to carbon dioxide emissions. Also, a “bundle recovery system” had more biomass per hectare, and had more of the product delivered to the end user, compared to the “pellet system”. Pelletizing the biomass was said to have more conversion losses..