1. Analysis of barriers and drivers for the development of the ESCO markets in Europe;Bertoldi P, Boza-Kiss B;Energy Policy
2. Global Trends in Renewable Energy Investment 2018
3. How Large are Global Subsidies, International Monetary Fund, WP15/105, New York, USA
4. Available from: https://www
5. Comparison and Assessment of Funding Schemes for Development of New Activities and Investments in Environmental Technologies, (Fundetec, rapport number 044370)