Status of energy efficiency in Slovenia (measures

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Status of energy efficiency in

Slovenia

(measures for energy efficiency improvement in Buildings

Stanje na področju učinkovite rabe energije v Sloveniji

(ukrepi zas izboljšanje energetske učinkovitosti v stavbah)

Prof.dr. Peter Novak

Hon. M. ASHRAE, IIR, REHVA

Dean High School for Technoilogies and Systems

Novo mesto

4. German - Slovene Seminar: P. Novak Energy efficiency 1

Outline

Introduction

Regulations

Application

Subsidies

Real acvtivities

Some cases

Conclusions

4. German - Slovene Seminar: P. Novak Energy efficiency 2

Introduction

Energy efficiency in Slovenia has long tradition from 1985

First regulation with air heat recovery obligation in AC come out in 1987

2002: New regulation on efficient use of energy in buildings has been published, based on EN 846 standard

2009: New regulation for efficient use of energy in buildings with EPBD requirements, including solar energy has been published, based on heating and cooling power limitation

2010: New regulation with inclusion of EPDB recast requirement has been introduced, based on energy used in buildings, based on EN ISO 13790 with Technical Guideline

4. German - Slovene Seminar: P. Novak Energy efficiency 3

Introduction -2

Other accepted and published documents:

2008: National action plan for energy efficiency

2009: Rregulation on metodology for elaboration and draving up the buildings energy certificates

2009: Regulation on methodology and content of local energy plans

2009: Order on assurance of energy savings at end users

2010: Regulation on methodologies for determination of energy savings at end users.

2010: Regulation on cost division and calculations for heat in apartments and other buildings with more units

4. German - Slovene Seminar: P. Novak Energy efficiency 4

Regulations

Regulation on efficient use of energy in buildings cover the all requirements of EPDB recast an limit the overall heat transmission coefficient and energy use in buildings for heating and cooling of apartment buildings and only for heating for public and commercial buildings.

Integral part of regulation is also Technical guidelines with some 377 equations for the calculation procedure.

In the regulation is also the obligation to use renowable energy in new buildings

4. German - Slovene Seminar: P. Novak Energy efficiency 5

Applications

Application of all this regulation in practice depend on the designer. There are many non official calculation codes for PCs, to give the designer possibilities to finish the calculation in time span available for the design.

After the collapse of total building sector in Slovenia, the designer has very little jobs and regulations are more or less accepted, even many calculations and requirement are not real.

On the other hand the design of passive houses, using the PHI rules and codes has been well accepted in practicised special for private investor.

4. German - Slovene Seminar: P. Novak Energy efficiency 6

Subsidies and credits

Slovenia EKOfund is supporting energy efficiency with public money. For 2012 the competition for the subsidies are published. Normally 25% of eligible cost are subsidized and this year first time exist the possibilities to combine subsidies and credit for one investment together.

For new and old buildings is available 10.000.000 €

For electric vehicles is available 500.000 €

For public vehicles an CNG and biogas 300.000 €

For crediting of energy efficiency and environment improvement of businesses with low interest rate three month EURIBOR + 1,5%, maximum is 80% of investment is provided 25.000.000 € and for citizens 5,000.000 €

4. German - Slovene Seminar: P. Novak Energy efficiency 7

Real activities

In the last year the activities in building sector has been minimized, because of economic crises.

Only activities has bee on private housing , many of them decided to build passive type of building.

In public sector some reconstruction of the schools and kindergarten with EU help was finished.

In preparation are the renovations in hospitals (Celje, Koper) and in some schools.

In last year many buildings owner invest in PV system (good financial support, installed capacity cca 45 MW)

4. German - Slovene Seminar: P. Novak Energy efficiency 8

Some passive house cases

Pasive house Škvorc, Repnje 14, 1217

Vodice

Heated area : 283 m2

Energy according PHPP: 13 kWh/(m2a)

Air tightnes: 0,4 h-1

Year build: 2010

System used

Light wooden construction

Builder:

EKO PRODUKT d.o.o., Trpinčeva ulica

39

1000 Ljubljana

4. German - Slovene Seminar: P. Novak Energy efficiency 9

Some passive house cases

Passive house Petkovšek, Čevljarska ulica, 1292 Ig pri Ljubljani

Heated area: 133 m2

Energy according PHPP: 10 kWh/(m2a)

Airtightness : 0,42 h-1

Year build: 2009

System used:

Light prefabricated walls

Builder:

LUMAR IG d.o.o., Limbuška cesta 32 a,

2000 Maribor

FIRST ENERGY POSITIVE HOUSE IN

SLOVENIA

4. German - Slovene Seminar: P. Novak Energy efficiency 10

Some passive house cases

Pasive houseKepec, Hocevje 96 , 1301 Krka

Heated area:

180 m2

Energy accordingPHPP: 15 kWh/(m2a)

Airtightnes : 0,33 h-1

Year build: 2009

System used<.

Massivee walls with YTONG, thermal

Isolation roock wool

Member od consortium

Passive house

XELLA POROBETON SI, d.o.o.,

Loke pri Zagorju

64, 1412 Kisovec

4. German - Slovene Seminar: P. Novak Energy efficiency 11

Some passive house cases

Passive house Kozin,

Kovačeva ulica 17,

1000 Ljubljana

Heated area: 186 m

2

Energy according PHPP:

13 kWh/(m

2 a)

Airtightnes : 0,38 h-1

Year build: 2010

System used:

Light prefabricated panels:

LUMAR IG d.o.o., Limbuška cesta 32 a, 2000 Maribor

4. German - Slovene Seminar: P. Novak Energy efficiency 12

LUMAR Passive Houses

4. German - Slovene Seminar: P. Novak Energy efficiency 13

Some passive house cases

Passive house Šiler, Zgornje Bitnje 346,

4209 Žabnica

Heated area: 144 m2

Energy according PHPP: 14 kWh/(m2a)

Airtightness : 0,58 h-1

Year build: 2010

System used :

Light prefabricated panels

Builder :

LUMAR IG d.o.o., Limbuška cesta 32 a,

2000

Maribor

4. German - Slovene Seminar: P. Novak Energy efficiency 14

Conclusions

Energy efficiency in private houses in Slovenia is under way to passive house quality

Refurbishment of public or commercial building is a little behind, because of economic crisis

Technology for energy efficiency is well known and present

Design knowledge is good, except in the cases of public procurement . Lowest price kill the quality.

4. German - Slovene Seminar: P. Novak Energy efficiency 15

Thanks for your attention!

If you have any question, please don‘t hesitate to ask me now!

4. German - Slovene Seminar: P. Novak Energy efficiency 16

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