ABSTRACT
Increasing greenhouse gas (GHG) concentrations in the atmosphere and the corresponding increase in global average temperature have raised concerns about the consequences of man-made climate change. As the energy sector is one of the main sources of anthropogenic GHG emissions, policy measures for mitigating climate change focus on increasing the share of renewable energies in this sector. In this sense, the most relevant policy framework within the European context is the Renewable Energy Directive (RED) (European Union 2009), which sets a target GHG reduction of 20% until 2020. Furthermore, a 20% contribution of renewable energy to the transport sector is aspired. This is of special importance, because transport is the energy sector with the greatest dependence on fossil fuels.
