CROATIA

District heating counts around 10% of the overall heat supply in the country. There are around 13 district heating companies in 19 cities and towns, including the main district heating company is HEP-Toplinarstvo, subsidiary of national power company HEP, holding 85% of the market share. Current district heating systems in Croatia mainly belong to so called 2nd generation of district heating, using hot water with supply temperatures well above 100°C.

Natural gas is the main fuel for district heat, while around 80% of district heat was generated through combined heat and power. Bad condition of existing building stock as well as the distribution grid requires substantial retrofitting. Modernisation and expansion of district heating systems in set as one of the priorities for Croatian energy policy.

About KeepWarm

KeepWarm is an EU-funded project whose objective is to accelerate cost-effective investments in the modernisation of District Heating Systems (DHS). It brings together eleven project partners from a variety of relevant sectors (energy agencies, national DHS associations, agricultural chambers, research institutes, consultancies on energy efficiency and NGOs) across Central and Eastern Europe.
The aim of the initiative, launched in April 2018, is to modernise DHS around the whole region and reduce greenhouse gas emissions by improving system operations and promoting a switch to less-polluting sources, like renewables. The project partners strive to ensure that best practices for environmental-friendlier heating and cooling will be taken up across Europe, replicating KeepWarm’s approach in other countries and regions, even beyond the end of the project in September 2020.

Capacity Building

The tailor made Capacity Building programm for Croatia covers training topics identified by Croatian DHS operators and staff during the needs assessment phase. The highest priorities have been given to:

  • Technical topics

Top priority topics were additionally also identified in:

  • RES and EE topics including waste to energy aspects
  • Financing topics
  • Management topics

Technical Topics

Training duration (hrs)

8 hours

Description

Energy renovationy of buildings and their impact on DHS, hydraulic balancing of the termotechnical systems where water is a heat carrier, termotechnical regulation and its impact on DHS and heat losses calculations in buildings (and DHS)

Training is suitable for

DHS operators, technical staff, engineers

Heat storage - TETO Zagreb & Seasonal storage - water pit & Thermal storage (Croatian); by Dr. sc. Mislav Cehil, dipl.ing., Univeristy of Zagreb

6 hours

Heat storage and their application in DHS, explanation about heat storage and different types of heat storage, relevant steps in heat storage design, overview of prices of heat storage installation

DHS operators, technical staff, engineers

Hydraulic calculation of pipes & Transitional phaenomenon in pipe systems & Pumps & Pipeline replacement strategy (Croatian); by Dr. sc Zdravko Virag, dipl.ing. & Dr. sc. Mario Savar, dipl.ing., University of Zagreb

12 hours

Hydraulic pipeline calculations strictly from the technical point of view, detailed technoeconomic analysis of pipeline replacement

DHS operators, technical staff, engineers

RES and EE Topics including Waste to Energy Aspects

Topic/ Language/ Author

Solar radiation & Types of solar collectors and solar heating systems & Calculation methods for yearly energy production from solar collectors & Appliance of solar heating systems in industry & Solar heating systems design (Croatian); by Dr. sc. Damir Dovic, dipl.ing., University of Zagreb

Training duration (hrs)

8 hours

Description

Solar thermal collectors and different types, solar thermal systems and different types, calculation methods for heat production from solar systems, solar thermal systems in industry and solar thermal systems design

Training is suitable for

DHS operators, technical staff, engineers

Tools for feasibility evaluation of solar heating & Big Solar Graz & Good examples of solar heating systems in Austria and Denmark & Techno-economic analysis of integration of solar heating systems in  Zapresic and Velika Gorica & Solar District Heating - inspiration and experiences from Denmark (Croatian); by Dr. sc. Goran Krajacic, dipl.ing., University of Zagreb

6 hours

Feasibility studies for several DHS in Croatia with advantages and disadvantages, improving existing feasibility studies, examples of good practice in solar energy in Austria and Denmark, feasibility analysis tools for quick and easy comparisons between alternative system configurations, technoeconomic analysis of integration of solar thermal collectors in Zapresic

Training is suitable for

DHS operators, technical staff, engineers

Financing Topics

Training duration (hrs)

8 hours

Description

Financial and economic analysis of different projects, types of studies and analysis, main differences between financial and economic analysis and studies and requirements, evaluation criteria for financial and economic analysis, risk assessment, feasibility study for the city of Samobor

Training is suitable for

Business support staff

Management Topics

Topic/ Language/ Author

Public relations in the market and in organisations (Croatian); by Ivana Belic, mag. nov.

Training duration (hrs)

4 hours

Description

Communication activities, subjects and strategy

Training is suitable for

Managerial staff

Setting goals in communication strategies including target groups and stakeholders (Croatian); by Ivana Belic, mag. nov.

4 hours

Communication activities, subjects and strategy

Managerial staff

Strategical planning of communication strategies (Croatian); by Ivana Belic, mag. nov.

4 hours

Communication activities, subjects and strategy

Managerial staff

Effective public relations & relations between public opinion and media (Croatian); by Ivana Belic, mag. nov.

4 hours

Communication activities, subjects and strategy including media activities and events

Managerial staff

Country project partner

The research group at the Power Engineering and Energy Management Chair at the University of Zagreb is leading in the field of sustainable development of energy in the region. Its main areas of research include energy planning and management, optimisation and sizing of energy systems, energy demand modelling and mapping, as well as sustainability of regions. For KeepWarm, UNIZAG FSB works on capacity building of DHS operators and support to pilot projects in Croatia.

REGEA is the energy agency for Croatia and the whole region. It provides information, education and promotion of good practice across the energy sector in support of development and implementation of national and regional energy plans and programmes. Moreover, it leads energy audits and certification, energy performance contracting and public private partnerships. For KeepWarm, REGEA will be supporting pilot projects in all countries, as well as the Croatian DHS pilots. 

KeepWarm resources