Criteria to track nzeb renovations in the Netherlands

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Criteria to track nZEB

renovations in the Netherlands

ERIC 2013 - 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)

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• Introduction

- IEE Cohereno: Goal

• Research methodology

• Definitions for nZEB renovations

- International developments

- Dutch developments

• The Dutch nZEB radar

• Conclusion

2 Criteria to track nZEB renovations in the Netherlands

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• 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

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

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• 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

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• Definitions of nZEB renovations

- International developments

- Dutch developments

Grant Agreement No: IEE/12/704/SI2.645922 COHERENO

Collaboration for housing nearly zero-energy renovation

Criteria to track nZEB housing renovation

D2.1

6.09.2013

Lead partner: BPIE

Start date of project: 1 April 2013 Duration: 36 Month Target group: Partners and Public Classification: PU (Public) File name : D2.1_BPIE_WP2.1_12/09/2013_(3.4) Project website: http://www.cohereno.eu/

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• 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 (http://task40.iea-shc.org/)

- Introduces a better understanding of Net Zero Energy Buildings (source book, verification tool and data sets)

A variety of nZEB terms is

already being used

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• 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:

Only few references aim to define

nZEB for renovation

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•

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. ≤ 50-60kWh/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)

Potential definition of deep renovation

of a house (GBPN, 2013)

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E.g. Netherlands: “Nationaal Plan Bijna Energieneutrale

Gebouwen (BENG)” (October 2012)

• ‘Energy neutral’ buildings are defined as:

EPC=0

according to NEN 7120

- 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

- 2015: 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

’

Legal nZEB definitions have mainly been

developed for newly-built constructions

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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

Only a few countries already have a

legal framework for nZEB renovation

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• 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

Energy label systems exist but nZEB

renovations can not easily be detected

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• 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

- www.nzebopendoorsdays.eu - www.huisvolenergie.nl

• Integrated nZEB renovation

concepts

are promoted

- www.one-stop-shop.org - www.ikhebeenidee.nu

The nZEB renovation market runs

ahead of policy development

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

nZEB working definition needed

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• 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

The nZEB radar

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1. Highest performance level, e.g. Energy class A++ on EPC, NZEB, countries nZEB 2020 definitions including significant renewable energy generation onsite or nearby Countries’ nZEB 2015 definitions 4. walls, floors and roofs renovated at very high U-values + correct ventilation 3. National Databases: energy class A or B renovations and ≤ 90-100 kWh/m2_/yr 2. Buildings with additional quality assurance test included, e.g. passive house

Discussion nZEB radar

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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”) Renovation to EPC ≤0,4 (new buildings requirement in 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” 2. Min. label

A++,

alternatively: Passive House certificate

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• 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

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Actors: apply now to become ‚listed‘!

Sleephellingstraat Rotterdam

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

Lombardstraat Middelburg Level 2 (Quality assurance number 10.WR.0001)

Contractor: Bouwgroep Peters Middelburg Architect: RDH Architecten en Stedenbouwkundigen Middelburg Consultant: DHV Amersfoort

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Thank you

www.cohereno.eu

www.otb.tudelft.nl

www.bpie.eu

Contact:

Ad Straub, TU Delft

a.straub@tudelft.nl

phone: +31 (0)15 27 82769

Criteria to track nZEB renovations in the Netherlands 20

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.