The amounts of greenhouse gas emissions continually increase as a result of the human activities, which threatens the ecological balance of the planet. The determination of countries all around the world to deal with the issue ended with the endorsement of the United Nations Framework Convention on Climate Change in 1992. As a result, The Kyoto Protocol was adopted in 1997 and was ratified by Bulgaria in 2002. It includes the quantitative targets for reducing the greenhouse gas emissions.
The National Green Investment Scheme (NGIS) aims at including the broadest possible range of potential environmental projects in the area of energy, transport, agriculture, forestry, water and waste management, industry and other national economy sectors. This objective of capturing diverse project areas will lead to the reduction of greenhouse gas emissions, while significantly improving the quality of the environment, and in particular reducing air, water, and soil pollution.
National Green Investment Scheme in the partnership of the Republic of Austria encompasses environmental projects that reduce greenhouse gas emissions and reduce environmental pollution. Between 2011 and 2014, 77 projects have been implemented to improve energy efficiency in public buildings.