BCEI ZRMK: Marjana Šijanec Zavrl, Marta Skubic, Matjaž Malovrh, M. Praznik, M. Tomsic

1. EIE EffCoBuildWP3 Energy saving potentials in building sector and virtual “power saving plant”Slovenia Survey on energy consumption in community Jesenice BCEI ZRMK: Marjana Šijanec Zavrl, Marta Skubic, Matjaž Malovrh, M. Praznik, M. Tomsic Jesenice, JEKO-IN: Branko Noč, Matjaž Peskar Meeting in Berlin, September 26-27, 2006 WP3 Outcome of this work package - Providing data of building stock by the community - Collecting data on building condition, building age, used energy sources, ect. - Identification of appropriate technical standard values for the energy demand of the different kind of buildings regarding their age and building condition - organising a workshop for the stakeholders in the community and introduce the results - Public Relation activities to spread the idea of “virtual power saving plant” (definite term will be fixed in accordance with the stakeholders in the community) Deliverable(s) of this work package Written report on the total energy demand and the energy demand in buildings, divided in different types of buildings. Written report on the saving potentials in the buildings in the community, including the description of the method used for calculation or estimation Workshop for the stakeholders to introduce and discuss the saving potentials Posters to demonstrate/visualise the energy saving potentials (e. g. with a virtual power saving plant) Role and contribution of each partner in this work package: (tasks and foreseen amount) The pilot communities, who will act as partners in the project, will provide data, such as building stock, building age, inhabitants, and if possible data on the energy deliveries (e. g. at district heating systems or natural gas supply) Each country consortium will gather additional data necessary to calculate the energy demands and the saving potentials, deliver the written report and create a poster to spread the results.

2. Survey on energy consumption in Jesenice is based on • Statistical data for municipality (residential sector, construction sector) • Energy concept of municipality (1999) incl. ongoing actualization (2006) • Pole in buildings with extremly high energy consumption

3. Distribution of energy supply networks Other 2% combined, oil, biomass 48% Gas 7% District heating 43%

4. Delivered energy by energy sourceper number of dwellings In 2005: Supplied heat toD.H. system 64.579 MWh Delived heat to D.H. users 53.654 MWh 3615 dwellings 4435 dwellings 900 Supplied heat to D.H. system 64.579 MWh

5. Energy supply for heating • 8590 dwellings in whole municipality Jesenice • 3500 dwelllings connected to D.H. • Reliable energy data! • 1400 dwellings > 150 kWh/m2year • 2000 dwellings < 150 kWh/m2year

6. Big energy users above 150 kWh/m2yearDelivered energy (kWh/m2year) – heated area of building (m2) – energy costs SIT/m2month) 0.8 € Useful / heated area of building (m2) 0.7 € 0.6 € Monthly costs for energy for heating (D.H. ) SIT/m2month 0.5 € 0.4 € Delivered energy for heating per year (D.H. ) kWh/m2year Source: D.H. company Jeko-in

7. 195 180 165 150 135 120 Average delivered energy for heating 150 kWh/m2year – deviation in % kWh/m2year Energy consumption – deviation from average Energy costs – deviation from average

8. DHW in households per energy source

9. DHW by district heating

10. Existing dwellings (8590 dwellings) by year of construction (Source: census 2002) regulation

11. Jesenice Whole Slovenia Census 2002: Jesenice: 2557 residential buildings 8517 dwellings with 540.298 m2 floor area

12. Existing dwellings in number by number of rooms (Source: census 2002)

13. Existing dwellings in total useful floor area by number of rooms Jesenice: total residential building stock area - 546.500 m2 , i.e. ~60% non-residential – 364.300 m2; ~40% (estim.) - (Source: census 2002)

14. Pole 1400 dwellings – 44 buildings

15. Pole – the biggest energy users (1400 dwellings, 44 residential buildings) 17%

16. Source: pole 44 buildings

17. Source: pole 44 buildings

18. Source: pole 44 buildings

19. Source: pole 44 buildings Net averge salary 650 EUR

20. Whole Slovenia Jesenice Source: pole 44 buildings

22. Refurbishment target • Big energy users (1400 dwellings) in central Jesenice use more then 150 kWh/m². • Final target energy use for dwelling with floor area 55 m2, is between 100 and 110 kWh/m². • Short term target of municipality Jesenice is to reduce delivered energy for heating to 140 kWh/m². • Municipality Jesenice developed 150 subsidy programme (started in 2000, currently enlarged!)

23. Refurbishment target • Municipality Jesenice developed 150 subsidy programme (started in 2000, currently enlarged!) • thermal insulation of attics (unused attic) or thermal insulation of roofs (used attic), • thermal insulation and renewal of façades, • thermal insulation of basement ceilings or flooring, • replacement of buildings’ joinery – windows and doors, • switch over to district heating (connection to hot-water network and gas grid), • installation of heat pumps for hot water generation, • installation of solar systems for hot water generation, • installation of special wood-fuelled combustion plants for central heating running on logs (biomass).

24. Biggest energy users – (44 buildings connected to D.H.)Estimation of savings Calculation Very detailed information for big energy users For modest energy users other only in average %

25. Common refurbishment actions in 1945-1980 buildings DH connection

26. 150 kWh/m2year Visualisation of saving potential - ideas

27. Rabe energije za ogrevanje > 150 kWh/m2leto Subvencije: http://www.jesenice.si Nasveti: http://ENSVET.si Visualisation of saving potential - ideas < 150 kWh/m2leto 250 kWh/m2leto Rabe energije za ogrevanje < 150 kWh/m2leto

28. Thank you for your attention!