Key Indicators & Decisions (KI&Ds) – Slovenia – 2020

02.01

Are building codes set as overall value, primary energy, environment (CO₂), reference building or other?

Overall value for residential buildings is represented by primary energy limit, while CO₂ is calculated as an indicator

Reference building approach is expected for non-residential buildings in 2021 revision of building codes

02.02

Requirements for energy performance of residential buildings in current building code

Primary energy <= 200 +1.1 (60 f(0) – 4.4 T(L)) kWh/(m²year); Every km² is a climatic zone; (T(L) – average yearly temperature, f(0) – shape factor)

Energy performance is a mix of values, calculation rules and text

02.03

Requirements for energy performance of non-residential commercial buildings in current building code

Heating need (Qh,nd)

Non-residential buildings: Q_h,nd/V_e ≤ 0.32 (45 + 60 f0 – 4.4 TL) (kWh/(m³year))

Public buildings: Q_h,nd/V_e ≤ 0.29 (45 + 60 f0 – 4.4 TL) (kWh/( m³year))

Energy performance is a mix of values, calculation rules and text

02.04

Requirements for energy performance of non-residential public buildings in current building code

02.05

Is the performance level of nearly zero energy (NZEB) for new buildings defined in national legislation?

Yes

In 'Action Plan for Nearly Zero-Energy Buildings' (2015)

02.06

Nearly zero energy (NZEB) level for residential buildings (level for building code)

Primary energy

75 kWh/m² (single-family)

80 kWh/m² (multi-family)

and 50 % RES

02.07

Year / date for nearly zero energy (NZEB) as level for residential buildings (as indicated in 02.04)

2021

02.08

Nearly zero energy (NZEB) level for all non-residential buildings (level for building code)

55 kWh/m² and 50 % RES

02.09

Year / date for nearly zero energy (NZEB) as level for non-residential buildings (as indicated in 02.06)

2021 and 2019 (public buildings)

02.10

Are nearly zero energy buildings (NZEB) defined using a carbon or environment indicator?

No

02.11

Is renewable energy a part of the overall or an additional requirement?

Yes

02.12

If renewable energy is an additional requirement to NZEB, please indicate level

02.13

Specific comfort criteria for new buildings, provide specific parameters for instance for airtightness, minimum ventilation rates

Yes.

Many comfort indicators; described in special technical appendix to the regulations

03.01

Is the level of nearly zero energy (NZEB) for existing buildings set in national legislation?

Yes

03.02

Is the level of nearly zero energy (NZEB) for existing buildings similar to the level for new buildings?

Yes

03.03

Definition of nearly zero energy (NZEB) for existing residential buildings (if different from new buildings)

Primary energy

95 kWh/m² (single-family)

90 kWh/m² (multi-family)

and 50% RES

03.04

Definition of nearly zero energy (NZEB) for existing non-residential buildings (if different from new buildings)

65 kWh/m² and 50% RES

03.05

Overall minimum requirements in case of major-renovation

Same as for new buildings

03.06

Minimum requirements for individual building parts in case of renovation

Same as for new buildings

Uwall = 0.28 W/m²K, Uroof = 0.20 W/m²K, Uwindows = 1.30 W/m²K 

03.07

National targets for renovation in connection to Long Term Renovation Strategy (number or percentage of buildings)

By 2050, 74% of single-family houses and 91% of multi-family houses shall be energy renovated.

03.08

National targets for renovation in connection to Long Term Renovation Strategy (expected reductions and relevant years)

A final energy reduction of 45% and a CO₂ reduction of 75% compared to the base year 2005, are planned until 2050. Greenhouse gas emissions shall be reduced by 75% (base year: 2005), and the share of RES shall be increased to at least two thirds of the energy use (without electricity and district heat) until 2030.

04.01

Number of energy performance certificates per year (for instance average or values for of 3-5 years)

11,500 (average)

04.02

Number of EPCs since start of scheme

73,250

04.03

Number of EPCs for different building types

No distinction among building types; calculated possible for all buildings, measured for existing non-residential

04.04

Number of assessors

> 300

04.05

Basic education requirements for assessors

Three-year university degree with technical studies in major, then two years of experience on energy efficiency and RES in buildings

04.06

Additional training demands for assessors

One-week training, written and oral examination

04.07

Quality assurance system

Basic quality assurance, in-depth quality assurance in development

04.08

National database for EPCs

Yes

04.09

Link to national information on EPCs / Database

05.01

Is there a national definition of smart buildings?

No formal definition

In practice, a NZEB equipped with IT (automation, monitoring, control, adaptability, connectivity, user-focused) technologies and systems is considered a smart house

05.02

Are there current support systems for smart buildings?

No systemic ones

Smart features are a requirement for public buildings being renovated to NZEB level when applying for cohesion fund co-financing

05.03

Are there currently specific requirements for technical building systems (for instance in building codes)?

Yes

 See section 2.IV.ii

05.04

Are there current requirements for automatics (for instance in building codes)?

Yes

 See section 2.IV.iii

05.05

Chosen option A or B for heating systems (inspection or other measures)

A + B

05.06

Number of heating inspections; reports per year (if option A)

more than 5,000

05.07

Chosen option A or B for cooling systems (inspection or other measures)

A + B

05.08

Number of air-conditioning / cooling system inspections; reports per year (if option A)

Approximately 150 per year

Total: 697 since 1 September 2016

05.09

Is there a national database for heating inspections?

Not yet

In development

05.10

Is there a national database for cooling / air-conditioning inspections?

Yes

At the beginning of operation

05.11

Are inspection databases combined with EPC databases for registration of EPCs and inspection reports?

Not yet

05.12

Link to national information on Inspection / Database