EIE EffCoBuild WP3 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.

EffCoBuild 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

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

EffCoBuild Delivered energy by energy source per number of dwellings In 2005: Supplied heat to D.H. system MWh Delived heat to D.H. users MWh Supplied heat to D.H. system MWh 3615 dwellings dwellings

EffCoBuild 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

EffCoBuild Big energy users above 150 kWh/m2year Delivered energy (kWh/m 2 year) – heated area of building (m 2 ) – energy costs SIT/m 2 month) Useful / heated area of building (m 2 ) Delivered energy for heating per year (D.H. ) kWh/m 2 year Monthly costs for energy for heating (D.H. ) SIT/m 2 month 0.5 € 0.4 € 0.6 € 0.7 € 0.8 € Source: D.H. company Jeko-in

EffCoBuild Average delivered energy for heating 150 kWh/m 2 year – deviation in % Energy consumption – deviation from average Energy costs – deviation from average kWh/m 2 year

EffCoBuild DHW in households per energy source

EffCoBuild DHW by district heating

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

EffCoBuild Census 2002: Jesenice: 2557 residential buildings 8517 dwellings with m2 floor area Jesenice Whole Slovenia

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

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

EffCoBuild Pole 1400 dwellings – 44 buildings

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

EffCoBuild Source: pole 44 buildings

EffCoBuild Source: pole 44 buildings

EffCoBuild Source: pole 44 buildings

EffCoBuild Source: pole 44 buildings Net averge salary 650 EUR

EffCoBuild Whole Slovenia Jesenice Source: pole 44 buildings

EffCoBuild

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!)

EffCoBuild 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).

EffCoBuild 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 %

EffCoBuild Common refurbishment actions in buildings DH connection

EffCoBuild Visualisation of saving potential - ideas 150 kWh/m2year

EffCoBuild Rabe energije za ogrevanje > 150 kWh/m 2 leto Rabe energije za ogrevanje < 150 kWh/m 2 leto Subvencije: Nasveti: Visualisation of saving potential - ideas < 150 kWh/m2leto 250 kWh/m2leto

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