The fundamental strategic EU documents which express political will to support utilisation of RES are the White Paper "Energy for the Future: Renewable Sources of Energy” and the White Paper on European transport policy [6]. They comprise a range of
proposals and measures to accelerate the realisation of targets and planned tasks. They specify directions of further actions.

The basic legal act supporting the development of RES in European Union is the Directive on the promotion of electricity produced from renewable energy sources in the internal electricity market, which imposes on the members states quantity targets and regulations of promotion and support electricity generated from RES. Another legal act of great importance is the Directive on energy performance of buildings [7]. Other papers, including those on greenhouse gas emission allowance trading [8], on the promotion and use of biofuels in transport [9] and on Community guidelines on state aid for environmental protection [10] give EU recommendations on how to make our planet a greener and cleaner place to live in.