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GUIDELINES OF THE AUSTRIAN OIB GUIDELINE INSTITUTE OF CONSTRUCTION ENGINEERING (OIB) 6 Energy conservation and thermal protection Guidelines Long-term renovation strategy Austrian Institute of Construction Engineering (OIB) OIB-330.6-022/19-093 April 2020 This guideline is based on the results of deliberations of the Provincial Expert Group appointed by the Conference of Directors of Provincial Government Offices with the aim of producing a proposal for harmonising the building regulations. The work undertaken by this group was coordinated by the Austrian Institute of Construction Engineering (OIB) in accordance with the mandate of the Conference of Directors of Provincial Government Offices within the meaning of Section 3(1)(7) of the statutes of the OIB and continued in the Expert Advisory Council for construction engineering guidelines. A resolution was passed on the guideline by the General Assembly of the OIB pursuant to Section 8(12) of the statutes. OIB Document for LTRS 2020 Austrian Institute of Construction Engineering (OIB) OIB-330.6-022/19-093 April 2020 Engineering Document on the long-term renovation strategy pursuant to Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings in the consolidated version of 30 May 2018 April 2020 1 Article 2a(1) of the EPBD – mandatory elements of the long-term renovation strategy .. 9 1.1 Overview of the national building stock and housing stock 2011 (Article 2a(1)(a)) 18 1.2 Overview of cost-effective approaches to renovation (Article 2a(1)(b)).................. 24 1.3 Overview of policies and actions to stimulate cost-effective deep renovation of buildings (Article 2a(1)(c))................................................................................................ 27 1.4 Overview of policies and actions to target the worst performing segments of the national building stock, split-incentive dilemmas and market failures, and an outline of relevant national actions that contribute to the alleviation of energy poverty (Article 2a(1)(d)) .............................................................................................................. 59 1.5 Policies and actions to target all public buildings (Article 2a(1)(e)) ........................ 66 1.6 Overview of national initiatives to promote smart technologies and well-connected buildings and communities, as well as skills and education in the construction and energy efficiency sectors (Article 2a(1)(f)) ................................................................................... 79 1.7 Evidence-based estimate of expected energy savings and wider benefits, such as those related to safety and air quality (Article 2a(1)(g)) .................................................. 107 1.7.1 Model A – Linear extrapolation .................................................................... 111 1.7.2 Model B – Linear extrapolation without a reduction in energy consumption for heating 114 1.7.3 Model C – Like model B but with restrictions on the development of energy carriers 117 1.7.4 Model D – Provincial experts model ............................................................. 120 OIB Document for LTRS 2020 Page 3 of 195 Austrian Institute of Construction Engineering (OIB) OIB-330.6-022/19-093 April 2020 Engineering 1.7.5 Model E – Stakeholder experts model ......................................................... 123 1.7.7 More extensive benefits, for instance in terms of safety and air quality ........ 127 2 Article 2a(2) EPBD – Roadmap with measures and domestically established measurable progress indicators, with a view to the long-term 2050 goal of reducing greenhouse gas emissions in the Union by 80-95% compared to 1990 ............................ 129 3 Article 2a(3) EPBD – Obligation to facilitate access to mechanisms to support the mobilisation of investment ................................................................................................. 133 3.1. Support for the mobilisation of investments into renovations through the aggregation of projects and investment platforms (e.g. one-stop-shops) (Article 2a(3)(a)) 133 3.2. Support for the mobilisation of investments into renovations through the reduction of risks for private investors (Article 2a(3)(b)) ................................................................ 141 3.3 Support for the mobilisation of investments through the use of public funding (housing support) (Article 2a(3)(c)) ................................................................................ 177 3.4 Guiding investments into an energy-efficient public building stock, in line with Eurostat guidance (Article 2a(3)(d)) ............................................................................... 184 3.5 Accessible and transparent advisory tools, such as one-stop-shops for consumers and energy advisory services, on relevant energy efficiency renovations and financing instruments (Article 2a(3)(e)) ......................................................................................... 186 4 Summary ................................................................................................................... 194 5 Sources ..................................................................................................................... 196 This framework document is based on the results of the deliberations of the Provincial Group of Experts in the Liaison Office of the Austrian Provinces appointed by the Conference of Directors of Provincial Government Offices [Landesamtsdirektorenkonferenz] and of the Expert Advisory Council for construction engineering guidelines – Sub-committee for energy conservation and thermal protection (SVBRL 6) of the Austrian Institute of Construction Engineering (OIB) to coordinate Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings (in the version of Directive (EU) 2018/844 of the European Parliament and of the Council of 30 May 2018 amending Directive 2010/31/EU on the energy performance of buildings and Directive 2012/27/EU on energy efficiency). OIB Document for LTRS 2020 Page 4 of 195 Austrian Institute of Construction Engineering (OIB) OIB-330.6-022/19-093 April 2020 Engineering Timetable In the following list, ‘LTRS session’ stands for the meetings, coordinated by the OIB, of the experts of the Expert Advisory Council for construction engineering guidelines – Sub-committee for energy conservation and thermal protection (SVBRL 6) and of the Coordination group for the implementation of the EPBD (the authors of this document), which served solely for the preparation and drawing up of the long-term renovation strategy 2020. 1 LTRS session: 14 January 2019 2 LTRS session: 1 February 2019 3 LTRS session: 28 February 2019 4 LTRS session: 6 March 2019 5 LTRS session: 20 March 2019 6 LTRS session: 2 April 2019 7 LTRS session: 24 April 2019 8 LTRS session: 22 May 2019 9 LTRS session: 12. June 2019 10 LTRS session: 24 June 2019 Submission of the draft LTRS 2020 to the consultation process: 27 June 2019 Stakeholder observations: until 1 October 2019 11 LTRS session: 9 October 2019 (Review of observations received) Contact forum (consultation process) with all relevant stakeholders: 28 October 2019 12 LTRS session: 18 November 2019 13 LTRS session: 4 December 2019 14 LTRS session: 9 January 2020 Meeting with stakeholders who provided input for the creation of the model: 14 January 2020 15 LTRS session: 20 January 2020 16 LTRS session: 24 February 2020 (Final decisions taken) Submission to the European Commission: 10 March 2020 Preamble The focus of this document is on aspects of thermal energy renovation and energy efficiency, as well as the use of renewable energy sources in the building sector. However, it goes without saying that all OIB construction and renovation work in Austria must also comply with OIB Guidelines 1 to 5. OIB Guideline 4, for example, has had a dedicated chapter describing the additional requirements for the barrier-free design of buildings since 2007. OIB Document for LTRS 2020 Page 5 of 195 Austrian Institute of Construction Engineering (OIB) OIB-330.6-022/19-093 April 2020 Engineering Abbreviations EPBD Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings (as amended by Directive (EU) 2018/844 of the European Parliament and of the Council of 30 May 2018 amending Directive 2010/31/EU on the energy performance of buildings and Directive 2012/27/EU on energy efficiency) HDH Heat demand for heating HDHW Heat demand for hot water EDH Energy demand for heating ECH Energy consumption for heating lc Characteristic length GFA Gross floor area SFB Single-family building MFB Multi-family building APB Apartment block RB Residential building NRB Non-residential building GHG Greenhouse gas BT Building type For details on the literature and sources, please refer to Chapter 5. There are no instance-by- instance references, with the main sources being cited in numerous places, although data from the remaining sources have also been used often. OIB Document for LTRS 2020 Page 6 of 195 Austrian Institute of Construction Engineering (OIB) OIB-330.6-022/19-093 April 2020 Engineering Authors c.p.t. Austrian Institute of Construction Engineering (OIB) Rainer Mikulits, Wolfgang Thoma, Robert Stadler Expert Advisory Council for construction engineering guidelines – Sub-committee for energy conservation and thermal protection (SVBRL 6): Burgenland: