Criteria to track nzeb renovations in the Netherlands

Transcription

1 Criteria to track nzeb renovations in the Netherlands ERIC Energy efficient Restoration International Conference, Groningen, 19 September 2013 Erwin Mlecnik, Ad Straub, TU Delft (OTB) Bogdan Atanasiu, Sara Kunkel, Ilektra Koulumpi, Buildings Performance Institute Europe (BPIE)

2 Introduction - IEE Cohereno: Goal Research methodology Definitions for nzeb renovations - International developments - Dutch developments The Dutch nzeb radar Conclusion 2

3 Goal of the Intelligent Energy Europe project COHERENO: - Reinforce collaboration between suppliers - for developing an integrated offer - for nearly zero-energy renovations - of owner-occupied single-family homes Coordinator - Delft University of Technology (NL) Partners - Passiefhuis-Platform (PHP), BE; - Flemish Institute for Technological research (VITO), BE; - Austrian Society for Environment and Technology (OGUT), AT; - Segel Consulting Company, NO; - Germen Energy Agency (DENA), DE; - Building Performance Institute Europe (BPIE), BE; - Flemish Contractor Federation (VCB), BE; - SINTEF Building and Infrastructure, NO. Timing - April 2013 March

4 Facilitation of new business models Existing nzeb renovations Business collaboration events Actor listing/ quality assurance Structures for supply chain collaboration 4

5 Research methodology - Desk research/ literature study on evolution of nzeb - Presentation for National Advisory Board - Draft definition development - Review by selected experts/ policy developers and partners National advisory board (NL) - Contractors: BAM Woningbouw, HEMUBO, NDA, OnderhoudNL, Uneto-VNI, VDM (Prestatiehuis), Weijman Vastgoedonderhoud, E.nu - Advice and information: SBR, BNA, Vastgoedbelang, VvEs met Energie, VACpunt Wonen, (ICDUBO), (EvEPA) - Financing and policy: Meer met Minder, Platform31, SVN Stimuleringsfonds Volkshuisvesting, (Rabobank) Consulted experts (NL) - Meer met Minder - Platform31 - SBR - ICDUBO - Henk Wegkamp, Carl-Peter Goossen 5

6 Definitions of nzeb renovations - International developments Grant Agreement No: IEE/12/704/SI COHERENO Collaboration for housing nearly zero-energy renovation Criteria to track nzeb housing renovation D Lead partner: BPIE Start date of project: 1 April 2013 Duration: 36 Month Target group: Partners and Public Classification: PU (Public) - Dutch developments File name : D2.1_BPIE_WP2.1_12/09/2013_(3.4) Project website: 6

7 A variety of nzeb terms is already being used Concerted Action supporting EPBD (Erhorn & Erhorn-Kluttig, 2011). - Identifies 23 different terms in use to describe energy-efficient buildings across Europe (according to EPBD, 2010) - Notes that Passive House voluntary standard is probably the best-defined and -accepted in various countries and regions nzeb Principles for nearly Zero-Energy Buildings (BPIE,2011) - proposed further thresholds for primary delivered energy, renewable energy share and CO2 emissions REHVA Task Force on nzeb (REHVA, 2011) - Defines nzeb through the net zero energy building, which is a building using 0 kwh/(m²a) primary energy under national cost-optimal conditions IEA Task 40 Annex 52 ( - Introduces a better understanding of Net Zero Energy Buildings (source book, verification tool and data sets) 7

8 Only few references aim to define nzeb for renovation Energy Efficiency Directive (EED, 2012) - Article 4 requires member states to establish a long-term strategy for the renovation of the building stock. - Defines the need for cost-effective deep renovation. - Introduces deep renovations as refurbishments that reduce both the delivered and the final energy consumption of a building by a significant percentage compared with the pre-renovation levels leading to a very high energy performance Global Buildings Performance Network (GBPN, 2013) - Noted worldwide various existing terms regarding deep renovation, such as Deep (Energy) Renovation, Deep (Energy) Retrofit, Deep (Energy) Reduction, Zero Carbon/Energy Renovation, Factor 2,4,6,10 Renovation.. - Concluded that a window of possibility exists for defining a deep renovation. - Proposed a common definition for deep renovation: 8

9 Potential definition of deep renovation of a house (GBPN, 2013) The energy performance after renovation fulfils the nzeb requirements for new buildings as they are defined at level of the EU MS and regions or/and The primary energy consumption after renovation is reduced by 75% as comparing to the pre-renovation status or/and Potentially additional: Limit primary energy consumption for heating/cooling, domestic hot water, ventilation energy consumption of auxiliary building s systems (e.g kWh/m 2 /yr (GBPN, 2013)) Define renewable energy share (e.g. at least 50% of the remaining energy demand) Define minimum CO 2 requirement (e.g. 3kg CO 2 /m 2 /yr suggested in (BPIE, 2011) based on the needs to meet the sectoral long-term decarbonisation goals) 9

10 Legal nzeb definitions have mainly been developed for newly-built constructions E.g. Netherlands: Nationaal Plan Bijna Energieneutrale Gebouwen (BENG) (October 2012) Energy neutral buildings are defined as: EPC=0 according to NEN Calculates net energy use on a yearly basis applying standard useage and climat - Energy use inside the building, energy production inside or outside the building : EPC from 0,6 to 0,4; obligation from the end of 2020 For deep renovations that follow the Dutch Building Decree Nearly energy neutral' means in the neighborhood of EPC = 0 10

11 Only a few countries already have a legal framework for nzeb renovation E.g. Brussels Capital Region: the Energy Performance of Buildings Ordinance (MB, 2011) requires from January 2015 onwards for residential buildings: - a primary energy consumption for heating, domestic hot water and auxiliary energy below or equal to 45 kwh per m² per year; - a net space heating need below or equal to 15 kwh per m² per year; -.. Major renovations: the renovation activities cover at least 75% of the heat loss surface area and the HVAC system. - all limits for requirements are multiplied with a factor 1.2 (except for indoor temperature overrun) Small renovations: - requirements on thermal insulation (U-values and risk assessment of thermal bridges) and ventilation. Allternative solutions possible taking account of specific urban characteristics such as a poor compactness and/or less solar gains, requiring thermal insulation (U-) values of the building skin: - average U-value 0.85 W/m²K for transparent parts; - average U-value 0.12 W/m²K for non-transparent parts 11

12 Energy label systems exist but nzeb renovations can not easily be detected Energy labels/ energy performance certificates (NL) usually only for homes that are being sold or rented (including relatively new homes) - not clear if and how a house was renovated - not clear which range can be defined as nzeb 12

13 The nzeb renovation market runs ahead of policy development nzeb renovations already exist with voluntary quality assurance - Passive house certified projects - Awards (e.g. Nationale Renovatieprijs/ Klus je Rijk/..) Large-scale nzeb experiments are ongoing in various countries - Lokaal Alle Lichten op Groen - Blok voor Blok nzeb homeowner web communities exist Integrated nzeb renovation concepts are promoted

14 nzeb working definition needed leading to a sufficient but limited number of actors Existing nzeb renovations Actor listing/ quality assurance Facilitation of new business models Structures for supply chain collaboration Business collaboration events 14

15 The nzeb radar A tool for tracking nzeb home renovations Include a broad range (applicable for all countries): - Adopted future requirements for new or existing buildings - Passive House - Energy Performance Certificates - Governmental support schemes (e.g. Energiesprong) - Combination of measures from a predefined list - Existing projects or lists where relevant market actors can be identified - Other existing databases with exemplary renovation Define four nzeb levels in each country - Depending on the number of projects in each country - Depending on the legal and market situation in each country - General rule: the closer to zero energy, the better 15

16 Discussion nzeb radar A framework for tracking nzeb home renovations 1. Highest performance level, e.g. Energy class A++ on EPC, NZEB, countries nzeb 2020 definitions including significant renewable energy generation onsite or nearby 2. Buildings with additional quality assurance test included, e.g. passive house 4. walls, floors and roofs renovated at very high U- values + correct ventilation 3. National Databases: energy class A or B renovations and kwh/m 2 /yr Countries nzeb 2015 definitions 16

17 The Dutch nzeb radar A tool for tracking nzeb home renovations in the Netherlands 1. EPC 0; alternatively energy bill 0 (frontrunner renovations included in Lokaal Alle Lichten Op Groen ) 2. Min. label A++, alternatively: Passive House certificate Renovation to EPC 0,4 (new buildings requirement in 2015) or label A+ 4. Min. label A; alternatively max. space heating; alternatively at least 3 thermal insulation measures + controlled ventilation 3. Frontrunner renovations included in Huis Vol Energie or Blok voor Blok 17

18 Conclusion - Most national action plans in the framework of the EPBD development did not sufficiently address the definition of an nzeb renovation - A national legal definition for nzeb renovation is currently missing - The market runs ahead with various initiatives - The proposed Dutch nzeb radar will be used for tracking renovations and listing actors in a public list 18

19 Actors: apply now to become listed! Lombardstraat Middelburg Level 2 (Quality assurance number 10.WR.0001) Contractor: Bouwgroep Peters Middelburg Architect: RDH Architecten en Stedenbouwkundigen Middelburg Sleephellingstraat Rotterdam Consultant: DHV Amersfoort Level 2 (Quality assurance number 09.WR.0001) Contractors: BAM Woningbouw Volker Bouwmaatschappij Rotterdam Co-makers: Ferroli, Niveau Kozijnen, Rockwool Benelux, Sto Isoned Architect: Villanova Architecten Rotterdam Consultant: Trecodome Roosendaal 19

20 Thank you Contact: Ad Straub, TU Delft phone: +31 (0) The sole responsibility for the content of this presentation lies with the authors. It does not necessarily reflect the opinion of the European Union. Neither the EACI nor the European Commission are responsible for any use that may be made of the information contained therein. 20