Although most of the energy for life comes from the Sun, we can say that we live in the era of fossil fuels where most of the energy originates from fossil fuels finite in quantity and declining in quality. Combined with constant growth of population and energy usage this resulted in increasing pollution and global warming problems. How to move forward?

Figure 1 Sustainable energy scenarios

One the most promising set of goals of social, ecological and economical sustainable energy development scenarios comes from EU’s climate and energy package: a set of binding legislation aimimg at [1]:

• A 20% reduction in EU greenhouse gas emissions from 1990 levels;
  
• Raising the share of EU energy consumption produced from renewable resources to 20%;
  
• A 20% improvement in the EU's energy efficiency.