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HORVAT, B., ČEPIČ, B., VARL, N.
CONTRACTUAL PROVISION EFFICIENT ENERGY CONSUMPTION - REFURBISHMENT OF AN HEATING OIL HEATING PLANT
KOMUNALNA ENERGETIKA / POWER ENGINERING, 26
Heating apartments and business premises is not only a necessity for normal life and work, but also an economic category, because it represents costs and a health category, because it pollutes the air with CO2 and causes harmful effects on our health with particulate matter (PM10, PM2,5), nitrogen oxides and other substances.
In order to achieve business strategies and European environmental commitments in the field of environmental and energy policies, Energija plus included in its sales program beneath electricity also the sale of natural gas and biomass, and implemented the refurbishment of an heating plant and district heating system in Pobrežje, Maribor. The project refers to the heating of 580 residential units, covering total 26.510 m2 of heated living area. The heating plant was built in 1974 and based on mazut. That was later changed to the heating oil. The walls of the buildings were simple and without insulation also without insulating doors and windows. During the period between 2010 and 2014 the owners accomplished energy renovation of apartment buildings by changing external doors and windows, additional thermal insulation of the facade and in partnership with Energija plus refurbishment of heating.
Users of the heating system got with renovation a modern heating plant and heating system which provides less harmful emissions in their local environment and significantly lower cost of heating. Fixed costs of heating system management together with the costs of financing the project remained the same as they were before the investment. Variable costs decreased by more than 30 %, which was a primary objective of the users.
SOVIČ, B., ROPOŠA, S., ĆATIĆ, D., GOVEDIČ, B., KORES, Č., MEZGA, Z., PREŠERN, M., SORKO, B., HORVAT, B., VARL, N.
ELEKTRO MARIBOR AND SMART CITY
KOMUNALNA ENERGETIKA / POWER ENGINERING, 22
Globalization and economic and technological changes put before us the task of how to simultaneously ensure competitiveness and sustainable urban development. Quality of life in the city is dependent on the residential, commercial, cultural, social and environmental conditions, as well as it depends of all of the services that the city provides to its residents. Group Elektro Maribor strives to integrate approach of providing the building blocks of the different areas of Smart City.
The construction of advanced metering system, which is next to information and communication technologies, one of the basic building blocks of Smart grids, energy consulting and energy consumption displays is in the quality of live area. In the future the main topic will be implementation of adaptation measures consumption and power management. Advanced technologies are an excellent bas for mutual cooperation areas dealing with different energy sources (water, gas, electricity). On the other hand, the advanced services are based on the use of new, more efficient ways to communicate with customers.
Area of Smart Economy refers to the Smart Grids, mobile payment and dematerialisation of documents. In the environmental field there are, next to the previously mentioned smart metering, smart buildings and smart lighting. eMobility, which can have a significant impact on reducing CO2 emissions and PM10 and PM2,5, contributes significantly to the Smart Mobility, Smart grids can, at least partially, solve problem in the operation of the distribution network that are due to the rising share of distributed generation units that are connected to the electricity grid.
Integration of building blocks, which is a new option and opportunity, will be possible with the active participation of conscious local communities.
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