Fuel availability and security of supply are two of the most important factors in the well functioning of a company like Gävle Energi. Another important factor is the price of the fuels used. The transportation cost plays also an important role when purchasing fuels from different sources. Currently the fuels used in Gävle Energi are mainly woody biofuels, but waste and peat could also be used in the future.

The aim of this thesis is to provide an overview of the different available biofuels in the region of Gävle. The fuels considered in the study are:

- Bark

- Forest Residues

- Wood waste

- Pellets and Briquettes

- Garbage/waste materials

- Peat

The research is focused on the physical properties of the fuels, their price and transportation cost, environmental and legislation issues and the availability in the region of Gävle. A 10-year perspective is defined for an estimated availability of the different fuels in te region.