Within the framework of the submitted tender, the development of new pipeline sections and the connection of new customers to the district heating network shall be established. In addition, certain district heating sections will be upgraded to energy. At present, the heat supply of the buildings of Budapest is carried out with the help of heat generating equipment that mainly uses natural gas. The high number of point sources has a negative impact on air pollution levels and it would also be desirable to increase the proportion of heat generation using alternative heat sources (geothermal energy, waste recovery, biomass). As set out in the Remote Heating Action Plan, there are a number of advantages of connecting new consumers to the district heating system, among which the following can be highlighted: — Improving the air quality of Budapest — Heat supply to new customers at competitive prices — Fossil energy saving compared to the originally planned on-site natural gas-based heat generation The FÖTÁV Zrt. therefore plans to develop new district heating couples for the installations detailed in the present tender. In addition, Főtáv Zrt. According to its strategy adopted on 9 December 2015, the shrinkage of the heat market reported by declining consumption of existing consumers (due to energy upgrades) should be slowed down and stopped by connecting new consumers. This is in line with the 2030 objectives of the National Energy Strategy, which also aims to significantly expand the district heating market in Budapest. Another important task is to interconnect districts so that heat generation and distribution can be achieved in a more flexible, cost-efficient and energy-efficient way. The development of new pipeline sections can be done by obtaining a permit for pipeline rights. Most of the consumers to be integrated into the district heating system have been in operation for several years and have their own heat production system. In general, these heat production systems are based on conventional natural gas-fired boilers, which can be considered obsolete due to the development of technology. They are inefficient compared to the currently available combustion plants, which can only be worsened by inadequate or incomplete maintenance. A number of systems would require complete renovation in boiler rooms if the consumer did not choose district heating. A small group of new consumers will start heating with the help of district heating. In their case, the amount of natural gas fuel required by boilers using condensation technology, which is currently realistic to be taken into account for the modelling of the energy consumption without district heating, has been taken into account. The average boiler efficiency of customers to be connected to district heating has been set at 90 %, which is considered conservative in terms of the over-representation of consumers with heating systems currently in operation. Modernisation of the existing district heating line The elements of the Primer pipeline network, most of the district heating lines are outdated, their specific heat loss is high partly due to environmental effects and partly due to materials and strata not meeting the expectations of our time. Reducing heat losses and renewing fittings for the pipelines is therefore essential, which can result in significant energy savings. Since we maintain the operation of the heat centres (and through this, their maintenance and development) within the scope of FŐTÁV Zrt.'s activities, it is of utmost importance that the operation can be carried out as efficiently as possible. The primary resource requirement for heat centre operation with only on-site presence lies in reducing human resources and one of the potential to increase operational efficiency. This reduction could include, inter alia, a remote monitoring system. The remote monitoring system also increases the overall level of automation of the supervised technology, precisely because of the needs of remote sensing and remote intervention. This will make it possible to reduce the need for and time spent on-site interventions. Furthermore, the use of remote monitoring results in optimised energy use. Connection of new customers to district heating systems: Estimated annual heat demand of new consumers included in this tender: 404 387 GJ/year Annual, Wire loss increased (GJ/year): 416 518 Calculated efficiency of eligible heat producers of consumers to be connected: 90 % The consumption of current estimated heat for consumers to be connected: 449 319 Gj/year Use of averaged specific fuel in heat zones: 0,8543024 GJTü/GJ The heat production system requires the use of only 355 832 GJ/year to produce the heat required by new customers, and consequently the absence of heat from fossil fuels of approximately 93 486 GJ/year can be expected. Upgrading of the district heating line: Loss of annual thermal energy