Nowadays budgetary funds still prevail among sources of financing of the projects in the area of increasing the energy efficiency of the regional economy in the Russian Federation. For example, in the Tver region in 2016, 82% of the projects for the modernization of the heat supply infrastructure and 100% for the modernization of the electricity supply infrastructure were implemented at the expense of the budget. At the same time, there is a decrease in the total amount of state financing of energy efficiency projects due to a high proportion of the budget deficit of the subjects of the Russian Federation. According to the agency ACRA (information dated April, 12, 2017 at www.acra-ratings.ru), 58 out of 85 regional budgets for 2017 were accepted with a total deficit of 193 billion rubles. At the same time, the urgency of applying organizational and financial mechanisms for the implementation of energy efficient projects involving alternative financing is growing. The article systematizes the views on the perspective mechanisms for implementing projects in the field of increasing the energy efficiency of the regional economy, including taking into account the analysis of problems of their application in the example of the Tver region. The authors studied existing organizational and financial mechanisms for energy-efficient projects, including public private and municipal private partnerships, and the Local Initiatives Support Program.