ISEC Christian Doczekal, Güssing Energy Technologies, Austria co-author: Dominik Rutz, WIP Renewable Energies, Germany

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1 Christian Doczekal, Güssing Energy Technologies, Austria co-author: Dominik Rutz, WIP Renewable Energies, Germany Small heating grids for communities in Balkan countries 1

2 CoolHeating project Promoting the implementation of small modular renewable heating and cooling grids in South-Eastern Europe (Croatia, Slovenia, Macedonia, Serbia, Bosnia- Herzegovina) Up to the investment stage Knowledge transfer from Austria, Germany, Denmark 2

3 Technical concepts General challenges Cheap fuel (coal, electricity, wood, ) Build new district heating grids (infrastructure) High investment costs Low or no subsidies Legal barriers High flow temperatures needed Night setback (switch off heating at night) 3

4 Concept Cven (Slovenia) Small village 40% logwood 15% nat. gas 13% wood+oil DH grid 3.4 km >80% connection rate needed 937 kwh/m/a grid density 4

5 Concept Cven (Slovenia) 2 biomass CHP units (e.g. Fröling, 56 kw el each): 48 % share 1 biomass boiler (800 kw): 49 % share 1 nat. gas peak load boiler: 3 % share Proposed heat price: 80 /MWh (62 /MWh minimum) 5

6 Concept Visoko (BiH) Bad air quality 47% brown coal 40% biomass DH grid 5.5 km 80% connection rate needed 3,500 kwh/m/a grid density Up to 80 C flow 6

7 Concept Visoko (BiH) Solar thermal col. (5,000 m²): 15.8 % share W/W heat pumps (6.3 MW): 78.5 % share NG peak load boiler: 5.7 % share Seasonal storage with m³ Proposed heat price: 45 /MWh Compared to natural gas (~30 /MWh), coal (~15), electricity (~70), biomass (~25) 7

8 Concept Zajcev Rid, Karposh (Macedonia) New settlement 44% electricity 28% DH 25% logwood DH grid 9.5 km 80% connection rate needed 4,466 kwh/m/a grid density Up to 60 C flow Annual heating expenses of households in Karposh 8

9 Concept Zajcev Rid, Karposh (Macedonia) First draft of concept Ground water heat pumps 5,000 m² solar thermal collectors Oil peak load boiler OK OK 55,000 m³ seasonal thermal storage No domestic hot water production in summer No heat consumption in summer large seasonal storage canceled solar thermal col. and seasonal storage X X 9

10 Concept Zajcev Rid, Karposh (Macedonia) W/W heat pumps (15 MW): 96.5 % share NG peak load boiler: 3.5 % share District cooling in summer Ground water amount Proposed heat price: 50 /MWh (39 /MWh breakeven) 10

11 Further concepts Letnjikovac, a suburban settlement of Šabac in Serbia Development of a small biomass based DH grid (3.5 MW), minimum 78 /MWh heat sold District heating in Šabac, Serbia Implementation of 3 biomass boilers with 4.5 MW each to the existing DH grid (now: ~40 MW fossil fuel) Ozalj in Croatia Development of a DH grid, 10 MW th biomass CHP (or boiler), 18,000 m² solar thermal collectors, 20,000 m³ pit thermal storage, oil peak load boiler, minimum 63 /MWh heat sold 11

12 Concepts in detail 12

13 EN: DE: Free Handbook for District Heating

14 Contact Christian Doczekal Güssing Energy Technologies GmbH This project has received funding from the European Union s Horizon 2020 research and innovation programme under grant agreement No The sole responsibility for the content of this report lies with the authors. It does not necessarily reflect the opinion of the European Union nor of the Innovation and Networks Executive Agency (INEA). Neither the INEA nor the European Commission are responsible for any use that may be made of the information contained therein. 14