In order to save fuel and energy resources and to reduce the negative impact on the environment, the state of Ukrainian fuel and energy complex requires improvement and development of an updated energy saving policy. There are a lot of negative consequences of environmental pollution caused by energy companies, in particular greenhouse gases, water pollution, and deteriorating of human health. The implementation of suggested above measures to improve the heat supply efficiency provides environmental requirements in terms of reducing harmful emissions into the atmosphere, consumption of natural gas and water by the local boiler stations. Their implementation has resulted in a follow points: economic effect of measure implementation, characterized by saving of natural gas costs; environmental effect, characterized by reducing of the harmful emissions into the atmosphere; environmental-economic effect, characterized by reducing of environmental tax. The studies have shown that there is a significant difference between the capital cost of events and the economic result. In most cases, the capital expenditures significantly exceed the economic and environmental - economic result of the boiler stations and heating networks modernization in Sumy city.

heat supply schemes, energy supply, modernization of heat supply facilities, environmental effect, prevented environmental and economic damage, environmental effect, ecological and economic effect.