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Irish Green Building Council

Green building policy and training in Ireland

 * About IGBC
 * Contact

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 * About
   * The Board
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NEARLY ZERO ENERGY BUILDING STANDARD

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What is the nZEB standard?
Who should know about it?
What will implementation look like in Ireland?
How is the improvement measured – Commercial /non residential?
What does this mean for commercial and non residential building design?
What Skills are needed for the nZEB standard?
Where can I get these nZEB skills?
Key Studies
News on nZEB – Europe
Data tool – nZEB buildings




WHAT IS THE NZEB STANDARD?

The European Energy Performance of Buildings Directive  Recast 2010 (EPBD)
requires all new buildings to be nearly Zero Energy Buildings (nZEB) by 31st
December 2020 and all buildings acquired by public bodies by 31st December 2018.

This means that any buildings completed after these dates should achieve the
standard irrespective of when they were started. This is quite different to the
transitional arrangements for previous building regulations revisions.

‘Nearly Zero – Energy Buildings’ means a building that has a very high energy
performance, Annex 1 of the Directive and in which “the nearly zero or very low
amount of energy required should be covered to a very significant extent by
energy from renewable sources, including energy from renewable sources produced
on-site or nearby“.

On 29th July 2016 the European commission published additional guidance on the
nZEB standard. Specifically for the Oceanic zone which applies to Ireland the
guidance proposes the following recommendation.

Oceanic:

—

Offices: 40-55 kWh/(m2.y) of net primary energy with, typically, 85-100
kWh/(m2.y) of primary energy use covered by 45 kWh/(m2.y) of on-site renewable
sources;

—

New single family house: 15-30 kWh/(m2.y) of net primary energy with, typically,
50-65 kWh/(m2.y) of primary energy use covered by 35 kWh/(m2.y) of on-site
renewable sources; and

Each member Government has  discretion in how the standard is applied
nationally.

To comply with the nZEB requirement, the Irish  Government has issued the
revised Building Regulations Part L – Conservation of Fuel and Energy, –
Buildings other than Dwellings (2017) – and the accompanying Technical Guidance
(non-residential buildings) and Technical Guidance Document L – Conservation of
Fuel and Energy – Dwellings (2017) (residential).

Non-residential buildings: The revised regulations require buildings to use up
to  60% less energy than allowed under current regulations, plus a requirement
for up to 20% of this final demand to be met with renewables.  If a higher level
of efficiency is achieved the renewables ratio may be reduced to 10% of final
demand. Note: final demand does not include tenant equipment. This comes into
force on the 1st January 2019, with a transitional arrangement that does not
extend beyond the 1st January 2020. This means that the current regulations –
Technical Guidance Document L -conservation of Fuel and Energy (2008 ) can only
be used beyond 1st January 2019 if Substantial work had been completed by 1st
January 202o, one year ahead of the 31st December 2021 deadline for NZEB itself.
However we advise you to go directly to the documents on Department of Housing
Building Standards site.

In January 2017, the Department of Housing Planning, Community and Local
Government, the Office of Public Works, the Department of Education and Skills,
the Health Services Executive and Sustainable Energy Authority of Ireland
published an Interim NZEB Specification for Public Sector buildings. This sets
out a performance specification for new buildings owned and occupied by Public
Authorities after 31st Dec 2018 effectively meaning that all public buildings on
the drawing board must meet the standard.

We are aware from members of the difficulty in meeting the nZEB standard for
projects such as schools, and other public buildings which have a long
gestation, procurement, and approval period often extending beyond 10 years. In
many cases these were designed before in the expectation of completion ahead of
the deadline. You should consult directly with your public sector client in
these cases on exactly how they are interpreting the directive.

Residential buildings: The Irish Government is implementing the Energy
Performance Building Directive 2010 Recast through revised building regulations
for homes which are will come into force on 1st November 2019. This means that
any dwelling receiving planning permission after 1st November  should meet the
nZEB standard. Substantial completion must have been achieved by 1st November
2020. After 2020 all homes irrespective of when they received planning
permission should achieve the new standard. The final Technical Guidance
Document L – Conservation of Fuel and Energy (2018) – will be published in June
2019, and the software to demonstrate compliance DEAP should also be updated and
available in June 2019 from SEAI. For further information see we advise you to
go directly to the documents on Department of Housing Building Standards site.

For residential buildings the new standard represents a 70% improvement over the
original 2005 regulations, a relatively small improvement over the 2011
regulations which represented a 60% improvement over the 2005 regulations.

This little video explains the key dates that home builders must be aware of in
the implementation of nZEB






WHO SHOULD KNOW ABOUT IT?

 



Financial Institutions and Investors




Property Advisors




Architects,
Engineers,
Construction Professionals



Developers






WHAT WILL IMPLEMENTATION LOOK LIKE IN IRELAND?

Commercial and Non residential 

 * Building Regulations 2017 – Technical Guidance Document L – Buildings other
   than Dwellings (Operative w.e.f. 1 Jan. 2019)

Residential 

 * Technical Guidance Document L – Conservation of Fuel and Energy – Dwellings
   (2017)


HOW IS THE IMPROVEMENT MEASURED – COMMERCIAL /NON RESIDENTIAL?

NEAP (Non domestic Energy Assessment Procedure) uses the software iSBEM to
measure compliance with Part L Technical Guidance Document, Conservation of Fuel
and Energy – Buildings other than dwellings  (2008). This can be used to
calculate improvements over current building regulations for smaller buildings.
Suitable software is been developed for the Irish market to more accurately
demonstrate compliance for larger, more complex buildings.

Non-domestic  building  energy  calculation  software  packages  to  calculate 
building asset  and  operational ratings  must  now  be  approved  by  the
Sustainable  Energy Authority of  Ireland  (SEAI)  before  they  could  be 
available  for commercial  use  in  the  Republic  of  Ireland.  More 
information  on  the  validation  procedure and  the approval scheme is
available on a SEAI website:

 * NEAP Software Validation and Approval
 * “The   Irish   approval   scheme   and   validation   procedure of  
   non-domestic    building    energy    calculation    software:    procedure
   document”
 * SBEM Software




WHAT DOES THIS MEAN FOR COMMERCIAL AND NON RESIDENTIAL BUILDING DESIGN?

A combination of some of the followings are likely needed to achieve a 60%
improvement.

 * Building insulation levels  greatly improved
 * Glazing ratios may need to be considered
 * Insulation value of the glazing itself  will be considerably improved
 * Airtightness standards are been  introduced including mandatory airtightness
   test on every building
 * Enhanced calculation of linear thermal bridging required.
 * The use of  renewables and free cooling of up to 20% of final demand. (not
   including plug loads)
 * The use of solar shading will need to be considered
 * Renewables will need to cover a substantial part of energy use
 * Much more efficient lighting and services will be needed


WHERE CAN I FIND OUT MORE?

The IGBC has produced an nZEB webinar series for both non-residential and
dwellings. The series of 4 webinars is intended to bring you up to speed with
what nZEB means for the sector with presentations from leading experts on key
principles for the practical implementation of nZEB.

Follow this link to dowload the nZEB webinars for commercial and residential.


WHAT SKILLS ARE NEEDED FOR THE NZEB STANDARD?

There may be  a steep learning curve to achieve the improved standards  if
professionals have not already upskilled. Demonstrating compliance will become
more technical. Design teams need to develop understanding of the software to
demonstrate compliance, though more guidance from Government is still required.
Achieving higher level improvements will require greater integrated design team
working at an earlier design stage. The emphasis on the  fabric of the building,
will need more in-depth understanding of designing for solar shading, thermal
bridge free construction, air tightness and glazing ratios etc. Greater
knowledge is required around more efficient lighting, services and renewables.



WHERE CAN I GET THESE NZEB SKILLS?

The Irish Green Building Council produced a webinar series on nZEB for
commercial buildings and nZEB for residential buildings.

Follow this link to dowload the nZEB webinars for commercial and residential.

For more comprehensive training Please see the following:

Construction professionals and Workers

Courses to  train construction workers in NZEB are now delivered by  NZEB
Training courses being delivered in WWETB’s Training Centre in Enniscorthy are
the first trade specific NZEB Courses in Europe.

 * NZEB – Fundamental Awareness – 1 Day
 * Site Supervisors – 4 Days
 * Bricklaying – 3 Days
 * Carpentry 3 Days
 * Electrical – 3 Days
 * Plastering – 3 Days
 * Plumbing – 3 Days

For more information see here  http://www.wwetbtraining.ie/nzeb#tab=panel3

The course materials for these courses  is based on the QualiBuild  project
funded by the Intelligent Energy Europe Programme from 2013 to 2016 in which
IGBC was a partner.  Qualibuild trained over 200 construction workers in the
pilot phase and national roll out from ETBs, Institutes of Technology and
private trainers. The Qualibuild learning manual can be downloaded here.

Introduction to Low Energy Building Construction course materials.



 

 

 

 

 

 

 

 

Construction Professionals

The Dublin School of Architecture, DIT Bolton Street offers a number of nZEB
courses:

 



Postgraduate Certificate in Building Performance (Energy Efficiency in Design)
Part time & Blended online

Postgraduate Diploma in Building Performance (Energy Efficiency in Design) Part
time & Blended online

MSc in Building Performance (Energy Efficiency in Design) Part time & Blended
online

CPD Diploma in NZEB Design Tools Part time & Blended online

CPD Certificate in NZEB Policy & Technology Part time & Blended online

Waterford Institute of Technology also provide nZEB courses:



Postgraduate Certificate in nZEB Design which has received  springboard funding

MSc in Sustainable Energy Engineering

 

Other courses and seminars – Professionals

 

Sustainco – the project aims to increase the visibility and understanding of the
near Zero Energy Building (nZEB) philosophy, with special emphasis on rural
areas find out more.

Nearly Zero-Energy Building Strategy 2020 (ZEBRA2020).
ZEBRA2020 aims at creating an observatory for nZEBs based on market studies and
various data.

QUALICHeCK
The challenges to implement Nearly Zero-Energy Buildings (NZEB) and achieving
minimum shares of Renewable Energy are tremendous. There are various indications
raising concerns regarding the reliability of Energy Performance Certificate
(EPC) declarations and the quality of the works. Achieving a significant
improvement requires strong commitment from authorities and other major players,
as well as sufficiently broad societal support.

Saint-Gobain Technical Academy also run courses on nZEB, check their list of
upcoming courses here.

Construction workers – Qualibuild

The QualiBuild  project was funded by the Intelligent Energy Europe Programme
from 2013 to 2016.  Qualibuild trained over 200 construction workers in the
pilot phase and national roll out from ETBs, Institutes of Technology and
private trainers.   Many construction workers lack the core knowledge in
relation to low energy buildings. This addresses one of the main issues
identified within the Irish Build Up Skills (BUSI) Roadmap.

Introduction to Low Energy Building Construction course materials.



The Construction Workers Skills Register is a register of construction and craft
workers who have undertaken up skilling in low energy construction for NZEB and
have completed the Foundation Energy Skills course developed by the QualiBuild
project.

The Train the Trainer programme for construction workers in low energy skills
consists of 4 modules: 1) Building for Energy Performance, 2) Building Fabric,
3) Building Services and 4) Pedagogical Approaches.

 




KEY STUDIES

 * QUANTUM project: quality management (QM) for building performance
 * Cost Optimal Calculations and Gap Analysis for recast EPBD for
   Non-Residential Buildings, pdf
 * Still significant potential for cost-effective energy savings in new and
   existing buildings
 * Towards nearly Zero Energy Buildings in Ireland. Planning for 2020 and beyond
 * Construction 21. Case studies




NEWS ON NZEB – EUROPE

 * Ask the Experts: Is there a unique definition in Europe for a nearly Zero
   Energy Building?

In our Ask The Experts section, BUILD UP provides expert answers to common
questions related to energy efficiency in buildings. This month we ask whether a
single European definition for nearly Zero-Energy Building (nZEB) exists. Read
more

 * Plus-energy school retrofit in Germany

Two school buildings in Reutershagen, Germany – one of them from the early 1960s
– were refurbished according to energy-plus standards. An ORC power plant with
district heating and integrated photovoltaics deliver energy for heating, water
and lighting. Read more

 * Nearly Zero Energy Hotels  (neZEH)

neZEH encourages and proposes concrete solutions to EU hotel owners willing to
become a nearly Zero Energy Hotel. Providing technical advice for nZEB
renovations,demonstrating the sustainability of such projects and promoting
front runners, neZEH has the ambitious goal of sensitizing 15,000 hotels across
Europe, engaging them in the EU nearly zero energy building (nZEB) strategy.
Read more




DATA TOOL – NZEB BUILDINGS

The tool on nZEB buildings enables to display relevant indicators for a sample
of nZEB buildings and high efficient buildings estimated to be at nZEB level,
built recently in selected European countries. It aims at providing information
of best cases in Europe, thereby showing most recurrent technologies, materials
and strategies towards the nZEB target. The tool differentiates residential and
non-residential nZEB buildings and shows some of the most significant indicators
regarding energy performance, passive and active solutions and production of
renewable energy. Access

 

 




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HOME PERFORMANCE INDEX

Best quality, national and international standards, healthy, low carbon homes.
From design to build, the Home Performance Index represents a first in Irish
residential development certification.


RELATED CONTENT

 * Ventilation Systems for New Homes
   
   
   Presenter: Hugh Whiriskey, Partel
   
    

 * Air Source Heat Pump & nZEB Compliance
   
   
   Presenter: Niall Duffy, Daikin
   
    

 * Energy & Carbon
   
   
    



IGBC

The Irish Green Building Council is a not for profit company limited by
guarantee registered in Ireland. Registered Number: 492948.
Registered Office: 19 Mountjoy Square East, Dublin 1.

Director(s): Refer to About Us pages.

Phone: (01) 6815862 & (01) 6815843 Email: info@igbc.ie





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