AUSTRIA`S ROAD TOWARDS NEARLY ZERO-ENERGY BUILDINGS

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AUSTRIA`S ENERGY STRATEGY: - 10% IN BUILDINGS

Energy demand 2020/2005 Buildings -10% Households, SMEs, services, agriculture +10% Energy intensive industries +15% Transport -5%

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DECREASING TREND IN HEATING INTENSITY FOR PRIVATE HOUSEHOLDS

Final energy demand for heating per 1.000 m2, without climate correction

Final energy demand for heating per 1.000 m2, with climate correction

Final energy demand for heating Net floor area

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• Methodology for calculating the energy performance of buildings

• Setting of minimum energy performance requirements

• Calculation of cost-optimal levels of minimum energy performance standards

• New buildings Considering high-efficiency alternatives (renewables, small cogeneration, district heating & cooling, heat pumps)

• Existing buildings Ensuring energy performance upgrades when buildings undergo major renovation

Encouraging the installation of high-efficiency alternative systems

• Requirements for technical building systems At least for heating, hot water, air-conditioning, large ventilation or a combination thereof

• Inspection of heating systems and air-conditioning systems (incl. Reports)

• Considering financial incentives and the removal of barriers

• National plans for nearly zero-energy buildings By 31 December 2020: all new buildings

After 31 December 2018: all buildings occupied and owned by public authorities

Establishing a system of energy performance certificates

REQUIREMENTS SET BY DIRECTIVE 2010/31/EU ON ENERGY PERFORMANCE OF BUILDINGS

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Indicators:

• Space heating demand (HWB)

• Overall energy performance factor (fGEE)

• Overall primary energy demand (PEB)

• Overall CO2 emissions (CO2)

Criteria: HWB, PEB, CO2, energy performance

Energy performance criterion:

• meet stricter requirements on HWB or

• meet stricter fGEE by using more efficient technical building system and/or heat recovery, PV, wind energy on-site or the like

FGEE = 1 corresponds with 2007 requirements

(REDESIGNING) ENERGY PERFORMANCE CERTIFICATES

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AUSTRIA´S NATIONAL PLAN FOR NEW BUILDINGS

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DEVELOPING THE “BUILDINGS OF TOMORROW“ EXAMPLE: LIFECYCLETOWER HYBRID WOODEN HOUSE < 20 FLOORS

Project Manager: Michael Zangerl (michael.zangerl@rhombergbau.at)

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Refurbishment to plus energy standard of the Technical University Vienna

Biggest facade integrated PV facility in Austria

DEVELOPING THE “BUILDINGS OF TOMORROW“ EXAMPLE: PLUS ENERGY OFFICE

Project Manager:

Helmut Schöberl (helmut.schoeberl@schoeberlpoell.at)

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BUT: NO FUNDAMENTAL ENERGY SAVINGS WITHOUT EXISTING BUILDINGS

New

Existing building

stock

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EXAMPLE: VIENNA, WISSGRILLGASSE APARTMENT BUILDING

• Built in the period of promoterism, renovated in 2011

• Space heating demand: 186kWh/m²a → 28 kWh/m²a

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• Built in 1958, renovated in 2006

• Space heating demand: 179 kWh/m²a → 14 kWh/m²a

EXAMPLE: LINZ, MAKARTSTRASSE APARTMENT BUILDING

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EXAMPLE: LANGENZERSDORF, SECONDARY SCHOOL

• Renovated in 2010

• Space heating demand: 219 kWh/m²a → 15 kWh/m²a

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AUSTRIA´S NATIONAL PLAN FOR MAJOR RENOVATIONS

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• All of the 9 Austrian federal states (Laender) provide social housing support programmes

Favourable loan or grants

• Large share of new and major renovated buildings receive such support

Up to 90 % of new buildings before 2010, 50 % in the last years

• Always stronger requirements than in the regional building codes

Applies to new buildings, major renovation and building elements

Graded grants according to energy efficiency and other building qualities

Higher support in case of more sustainable solutions, such as usage of renewables, ecological materials

• Subsidised homes almost meet the 2020 requirements of the National Plan

• Budget 2011: EUR 2.660 million

New construction: EUR 1.560 million

Renovation: EUR 700 million

Social assistance for housing: EUR 400 million

HOUSING SUPPORT: PROVINCES

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DEVELOPING AN ENERGY PERFORMANCE FOR NEW (FUNDED) BUILDINGS

Example of the Province of Salzburg Residential buildings funded by the “housing support programme“

m2 = gross floor area

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• Provided in addition to regional housing renovation support

• Grants for specified deep thermal renovation

• Additional grants in case of:

• Renewable heating systems

• Wooden windows

• Ecological insulation materials

• Listed buildings

• Grants for partial renovation, i.e. of building elements

• Grants for companies also possible

• 2013 • Volume: EUR 123 million (of which 93 are for households)

• Up to EUR 9.300 per project

• Building certificate required

HOUSING SUPPORT: FEDERAL RENOVATION CHEQUE

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• Statistics Austria has to set up an energy certificate database within the building and dwelling register at the request of the provinces and communities

• not “activated“ until now

• three provinces use the database ZEUS

http://www.energieausweise.net/

Online administration for provinces, building authorities, real estate management

full data review, identification of possible differences and mistakes,

mainly used for housing subsidy requests

COLLECTION OF ENERGY CERTIFICATES

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DATABASE UPLOAD AND ELECTRONIC CHECK

Database upload: automatic check whether the calculated values comply with the requirements or not

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RESULT OF THE ELECTRONIC CHECK

If the calculated values do not comply with the requirements, the energy consultant will receive an e-mail with the request to check and improve the EPC

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RESULT OF ELECTRONIC CHECK (PAGE 1)

The result of the electronic check is displayed in detail: transmission losses, ventilation system, heating system, thermal solar system, passive solar energy gains, domestic hot water, CO2.

Compliance with building code: voluntary check; feedback for the building authority (building permission is municipal responsibility) and feedback regarding training needs.

Compliance with housing subsidy: mandatory check

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RESULT OF ELECTRONIC CHECK (PAGE 2)

The second page of the examination report gives suggestions regarding the detected weak points and what can be done in order to comply with the requirements.

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• requirement to show and hand over the Energy Performance Certificate when selling or renting out a building (unit)

• amendment in force by Dec 2012 publication of the energy performance class in real estate advertisements (print &

electronic media) single family house: possibility of using an energy performance certificate of a

comparable building (if confirmed by an assessor) certificate must not be older than 10 years exceptions from the requirement to hand over or display an energy certificate are

defined, exception for historic buildings no longer possible • only frost-protected buildings • buildings which will be demolished • buildings for religious purposes • temporary buildings (max. 2 years) • industrial and agricultural buildings, workshops, which mainly use on-site waste heat • buildings with less than 50 m2 • residential buildings which are used only part of the year, therefore heating demand is

expected to be less than one quarter of the all-year-round use

Legal consequences and sanctions (including real estate agents) monetary penalties up to 1.450 Euro

ENERGY CERTIFICATION PROVIDING ACT

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• Energy demand for heating is already declining

• Target is at least – 10% until 2020 (compared to 2005)

• Standards in the national plan for new and renovated buildings support this target

• Financial incentives from the provinces and the federal government result in further increases in the energetic quality of buildings

subsidised homes almost meet the 2020 requirements of the National Plan

ecological quality gains importance (building materials)

shift of incentives from new buildings to renovation intended but conflicts with need for additional living space (increasing population/households)

• Accurate building certificates are a key prerequisite

SUMMARY

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Prof. Herbert Lechner

Deputy Director

Chief Scientific Officer

Österreichische Energieagentur – Austrian Energy Agency

Mariahilfer Strasse 136

A-1150 Vienna

Tel: + 43 1 5861524 - 0

Fax: + 43 1 5861524 – 340

Email: herbert.lechner@energyagency.at

URL: www.energyagency.at

THANK YOU FOR YOUR ATTENTION