The project for the reconstruction of the central boiler house of the municipal enterprise "UZhKG" provides for the installation of a heat pump (air-water) with a thermal capacity of 4 MW on the territory of the boiler house. 

In the first quarter of 2026, it is planned to put into operation a solar station  with a capacity of 1500 kW and an energy storage system with an energy reserve of 1290 kW•h on the territory of the central city boiler house.

The hot water supply system  was introduced in 1987 and is still in operation. For the operation of the city's hot water supply system in the summer, the central city boiler house and heat networks must ensure the supply of coolant with a temperature of 70°C to each city's central heating station. The actual average heat load of hot water supply, taking into account the fact that the equipment is operating in the summer, will be 4 MW. Since 2014, hot water supply service has not been provided in the inter-heating (summer) period, which leads to a decrease in the operational reliability of technological equipment and heating networks.

The implementation of this project will primarily resolve the issue of providing hot water supply service in the city in the summer and increasing the operational reliability of the heating system and centralized hot water supply equipment in the city. Also, after implementation, the following problems will be solved:

·  Economic efficiency: In the summer, the heat pump provides thermal energy production with a much higher conversion coefficient (from 3 to 5 times), which is much cheaper than using gas boilers.

·  Refusal of the «summer» boiler mode: High-power gas boilers have low efficiency when operating at low load (only for DHW). The heat pump works efficiently, eliminating fuel waste.

·  Environmental friendliness: Greenhouse gas and nitrogen oxide emissions are significantly reduced, which is important for urban infrastructure.

·  Energy independence: Natural gas consumption is reduced, which increases the reliability of hot water supply in conditions of unstable supplies.

·  Automation: Modern heat pumps operate autonomously, do not require constant maintenance, and hybrid systems can automatically switch between energy sources.

As a result of installing a heat pump with a thermal capacity of 4 MW, the following will be achieved:

• reduced natural gas consumption for thermal energy production (due to the use of renewable energy sources), which is at least 14.0% of the annual consumption of the boiler house.
• 100% provision of centralized hot water supply services to all city consumers 8,560 subscribers (including the population - 8,543 subscribers, budget institutions - 5 subscribers and other consumers - 12 subscribers) in the summer period.
• Saving money by reducing costs for emergency repair work on all heat supply and hot water supply systems by increasing the operational reliability of technological equipment and heat networks.