A quality legislative framework is a basis for the successful planning and development of energy systems. In addition, the market performance of new investments must be systematically analyzed and simulated long before investments start and throughout the life cycle of power plants. In this context, the institute provides the services of energy project feasibility studies , in-depth project surveys, analysis of market trends, and regulation of energy activities. 

The Institute actively participates in the field of energy legislation and related legal areas (commercial law, administrative law, property law, social law, spatial planning and construction, environmental protection, concessions, public-private partnerships, etc.), proposing legal solutions in energy sector, harmonization of national energy legislation with the EU energy acquis, drafting and implementation of strategic planning, laws and bylaws in the energy sector, restructuring, privatization and operation of energy entities, organization and regulation of energy markets as well establishing and strengthening the institutional capacity of operators, agencies, etc. The Institute performs these activities for the needs of public bodies, energy, and other economic entities, international financial institutions, etc., and within various European and international infrastructure projects in Croatia and Southeast Europe.