Energy Certificate in Slovenia (2026)

An energy performance certificate (energetska izkaznica) is a public document with data on the energy performance of a building or apartment. When selling or letting, the owner must present it to the buyer or tenant no later than before the contract is concluded, and state its energy indicators in the listing. It is valid for ten years. The energy class, from A1 to G, says how much heat the building needs for heating per square metre per year.

When is an energy certificate mandatory?

Under the Efficient Use of Energy Act (ZURE), owners must provide a certificate for buildings or building parts that are built, sold or let. The obligation applies:

when selling a building or apartment,
when letting under a new lease longer than one year — including when consecutive shorter leases with the same tenant together exceed a year (a break of three months or less does not count),
for new buildings,
for public-sector buildings with a total useful floor area over 250 m².

When an apartment is sold, a certificate for the whole building may be presented instead of one for the apartment. For a building without condominium ownership, a certificate can only be issued for the whole building. Owners who are not selling or letting do not need one.

When it does not have to be presented

leases shorter than one year,
sales in enforcement or bankruptcy proceedings or for expropriation,
sales of neglected, abandoned and dilapidated buildings unfit for use, for which the indicators cannot be calculated,
buildings used for worship, simple and minor structures, and stand-alone buildings with a total useful floor area under 50 m²,
industrial, storage and non-residential agricultural buildings in which no energy is used to condition the indoor climate.

What does the energy class mean?

The class is based on the heating energy need — how much heat for heating the building needs per square metre per year. The class bands are set by the Rules on the methodology for energy certificates:

Class	Heating energy need
A1	0 to 10 kWh/(m²a) inclusive
A2	over 10 to 15 kWh/(m²a)
B1	over 15 to 25 kWh/(m²a)
B2	over 25 to 35 kWh/(m²a)
C	over 35 to 60 kWh/(m²a)
D	over 60 to 105 kWh/(m²a)
E	over 105 to 150 kWh/(m²a)
F	over 150 to 210 kWh/(m²a)
G	over 210 kWh/(m²a)

A calculated certificate — issued for residential buildings, apartments and new buildings — also states the delivered energy for building systems, primary energy and CO₂ emissions. A measured certificate, based on actual consumption over the last three years, is issued for existing non-residential buildings. Except for new buildings, a certificate also includes recommendations for cost-effective improvements.

A class is not a bill

The class describes the building under standardised conditions of use, not your future energy bills. Actual consumption also depends on the heating system, energy prices and how the occupants live.

How to check the certificate before buying

1Ask for it before signingThe seller must present the original or a copy no later than before the contract is concluded. The energy indicators must already appear in the listing.
2Check the registerThe register of energy certificates is kept by the ministry responsible for energy. Whether a certificate has been issued for a building or apartment can be seen in the public view of GURS data on the spatial portal.
3Check validityA certificate is valid for ten years from issue. A building or apartment can have only one valid certificate — a new one cancels the previous one.
4Check what it coversA certificate for the whole building gives the building’s average, not necessarily the state of your apartment (position, floor, replaced windows).

An nReport report checks the energy-certificate register for both the apartment and the building and states whether a certificate is recorded, when it was issued and until when it is valid; an expired certificate is flagged. If the register could not be checked, the report says so rather than concluding there is no certificate.

What are the fines?

The owner of a building or building part is fined €300, and the responsible person of a company or sole trader €100, for failing to present a valid certificate to the buyer or tenant before the contract is concluded, or for failing to ensure that the energy indicators are stated in the listing.

Who issues certificates, and are the rules changing?

Certificates are prepared by licensed independent experts and issued by authorised issuers appointed by the minister responsible for energy. Each certificate must be reported for entry in the register when it is issued.

In 2024 the EU adopted the recast Energy Performance of Buildings Directive (EU) 2024/1275. To transpose it, a new Efficient Use of Energy Act (ZURE-1), which also brings new requirements for energy certificates, went to public consultation in autumn 2024. At the last update of this guide the Energy portal still lists ZURE (Official Gazette 158/20) and the 2023 rules as the legislation in force, so this guide describes those rules.

Not legal advice

This guide summarises the rules in force and is not legal advice. For a specific case, check the text of the law or consult a professional.

Sources

Frequently asked questions

Do I need a certificate to let my apartment for six months?

No, leases shorter than one year are exempt. But if you sign consecutive leases with the same tenant that together last more than a year, you must present one with the lease that takes the tenancy past a year.

How long is an energy certificate valid?

Ten years from issue. You can obtain a new one earlier; it cancels the previous one.

Can the seller show a certificate for the whole building instead of the apartment?

Yes, the law allows it. Bear in mind that a building certificate describes the building as a whole and not necessarily the state of an individual apartment.

Where can I check whether a building has a certificate?

Whether a certificate has been issued for a building or building part can be seen in the public view of GURS data on the spatial portal; the register is kept by the ministry responsible for energy.

This content is informational and does not replace an official appraisal by a licensed real-estate valuer.

The Energy Performance Certificate in Slovenia