Climate change is the defining issue of the 21st century. The
Kyoto Protocol sets binding targets for industrial countries to
reduce greenhouse gas (GHG) emissions, and furthermore establishes
timing and procedures to achieve them. The EU Renewable
Energy and Climate Change Package sets the climate change
reduction goal by 2020: 20 percent reduction in GHG emissions,
20 percent cut in energy consumption through improved energy
efficiency, and 20 percent increase in the use of renewable energy
(Directive, 2009).