Ireland

Summary

Ireland’s Part L is a performance-based code that requires a mandatory energy frame calculation to establish the Energy Performance Coefficient (EPC) and Carbon Performance Coefficient (CPC) in comparison with a relevant reference building. The code is split into two sections, ‘dwellings’ (2011) and ‘buildings other than dwellings’ (2008) with specific requirements outlined for each type of building. The codes address most thermal envelope requirements and energy-using systems in the calculation, including, HVAC, hot water and lighting.

Ireland has had prescriptive energy efficiency requirements for buildings since 1991. The first performance-based code was introduced following the release of the EPBD in 2002, with the latest code being further strengthened to reflect the requirements of the 2010 EPBD recast. Part L and the surrounding national policies encompass many progressive and dynamic aspects including, mandatory computer modeling for new buildings, low u-value requirements, air-tightness testing requirements for all new dwellings, bioclimatic design considerations, mandatory renewable energy requirements, robust pre-occupancy commissioning and a national target to build nZEB by 2013.

General Information

Full Title of Code

Building Regulations: Part L Conservation of Fuel and Energy: Dwellings and Part L - Conservation of Fuel and Energy Buildings other than Dwellings.

Year of Adoption

2008

Authority in Charge

Department of Environment, Heritage and Local Government with the Building Regulations Advisory Body (BARB)

Link

http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/Fi...

Link to Relevant Web Page

http://www.sustainablebuildingscentre.org/countries/Ireland

Remit of Code

Geographical Coverage

Ireland

Code set at:

National Level

Coverage

Coverage of Building Code:

  • Residential buildings
    • One family
    • Multiple family buildings
  • Commercial buildings
    • Offices
    • Retail and wholesale
    • Hotels
    • Hospitals
    • Educational buildings
  • Public buildings
    • Offices
    • Hospitals
    • Educational buildings

GBPN Climate Classification:

  • Heating Based

Type of Building Code

Type of Building Code:

  • Model code, frame or actual code:
    National Code.
  • Performance Codes for New Builds:
    Ireland’s Part L is a performance-based code that requires a mandatory energy frame calculation to establish the Energy Performance Coefficient (EPC) and Carbon Performance Coefficient (CPC) in comparison with a relevant reference building.
  • Energy Declaration:
    Energy declaration is currently required for Public Buildings over 1000m2. Since the 9th January 2013 all private and public buildings frequently visited by the Public over 500m2 are required to declare energy use.
  • Model / reference Building:
    The DEAP/NEAP software calculates the primary energy consumption and CO2 emissions of the whole building in comparison with a similar reference building.

Energy Covered

Basis for Energy Requirements:

  • Primary Energy:
    The primary energy calculation establishes the CO2 emissions and energy consumption associated with the building and is calculated using the DEAP or NEAP software.
  • Life Cycle Assessment considered (embedded energy):
    Not for individual buildings. However, from March 2013 Regulations will be reviewed to ensure Cost Optimality at a global level as required by Recast EPBD.

Energy Uses and Functions Covered by the Code:

  • Heating
  • Cooling
  • Ventilation
  • Airtightness
  • Thermal bridging
  • Hot water
  • Building parts (lifts, pumps etc)
  • Lighting
  • Design, position & orientation of building
  • Heat recovery
  • Passive solar
  • Passive cooling
  • Natural ventilation
  • Solar protection
  • Daylighting requirements
  • Renewable Energy (solar, PV, others):
    Dwellings, a reasonable proportion of the energy to be provided by renewable energy.10 kWh/m2/annum contributing to energy use for domestic hot water heating, space heating or cooling; or 4 kWh/m2/annum of electrical energy; or a combination.

Enforcement

Enforcement Status of Code:

Mandatory

Type of Enforcement:

  • Local enforcement
  • Accreditation of applicants

On-site Inspections Occur

  • During construction
  • Post completion

Certification to Support Enforcement of Code:

  • Energy Performance Certificate support BC
  • Positive labeling for building beyond the minimum BC level
  • Energy Offsets/Green Certificates
    • Number of certified buildings:
      295269
  • Inspection of boilers
  • Inspection of HVAC systems

Penalties for Non-compliance:

  • Fine
  • Refusal of permission to occupy

Measures Supporting Enforcement:

  • Commissioning requirements
  • Airtightness testing required prior to compliance
  • Mandatory Computer Modeling
  • Training of Inspectors

Values for New Buildings

Dwellings

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)2999--
CDD (°C)9--
U-Value (W/m²K)
Roof0.16Roof20.2
Wall0.21Wall2-
Floor0.21Floor2-
Window1.6Window2-
Others---
Overall U-Value---
Window1Window2
G Value/SHGC--
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    Minimum performance levels for mechanical ventilation systems include; Residential - Specific Fan Power (SFP) for continuous supply only and continuous extract only - 0.8 W/litre/sec, SFP for balanced systems - 1.5 W/lit re/sec.
  • Domestic Hot Water COP - Heat Pump:
    Hot water systems should be as efficient in use as reasonably practicable. For fully pumped hot water-based central heating systems utilising oil or gas, the boiler seasonal efficiency should be not less than 90% as specified in the DEAP manual.
  • Value for airtightness:
    7 m3/hr/m2 at 50 Pascals
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Energy Performance

60.00kwh

Buildings other than Dwellings

GBPN Climate Classification

Heating based

Coefficient for Comparison of Climate Zones

0.00

MeanMinMax
HDD (°C)2999--
CDD (°C)9--
U-Value (W/m²K)
Roof0.16Roof20.22
Wall0.27Wall2-
Floor0.25Floor2-
Window2.2Window2-
Others---
Overall U-Value---
Window1Window2
G Value/SHGC--
Visible Transmission--
Percent--

Other Requirements Set for:

  • Thermal bridge demands
  • Ventilation:
    Non-residential, the SFP of ACMV systems should be no greater than 2.0 W/litre/second, For new ACMV systems in refurbished buildings the SFP should be no greater than 3.0 W/litre/second.
  • Domestic Hot Water COP - Heat Pump:
    Hot water systems should be as efficient in use as reasonably practicable.
  • Value for airtightness:
    7 m3/hr/m2 at 50 Pascals
  • Heat Recovery
  • Technical HVAC systems
  • Efficient Lighting

Energy Performance

100.00kwh

Code History and Future Targets

General Process in Setting Requirements:

  • How far in advance are future targets set?:
    2013
    CO2 neutral.
  • Stakeholders are informed of future targets far in advance

Zero Energy Targets:

  • All end uses are not included
  • There is a realistic roadmap in place:
    Partially, currently being prepared. Was submitted to the EU commission in Oct 2012 and will undergo Public Consultation thereafter.
  • National Target date for nZEB:
    Net zero energy buildings by 2013.
  • Special Requirements for public buildings:
    Public sector to advise the 2015 target in 2013.
  • Links

Number of Earlier Codes

4

Current Defined Levels beyond Minimum Standard (present code)

3

Number of Future Aspirational Codes

3

Is there a Zero Energy Target

2013

Multiple set of data:

  • Levels beyond minimum:
    3
  • Year historic or aspirational codes (planned) :
    2008
  • Baseline (actual code if nothing else):
    60% less energy than 2008 code requirements.
  • Actual level of energy consumption in target
    • Relative target in percent:
      0
  • Levels set in primary energy
  • Levels set in GHG emissions

Supporting Measures

Involvement of Stakeholders in the Development of Codes

Stakeholders are involved in the development of the code.

Level of Training Provided to Stakeholders Following Implementation of Code?

Performance specifications and general guidance on compliance is provided in TGD. Training is through continuing professional development bodies, training is provided to installers through warranty companies. Workshops are also held.

Provision of Appropriate Information for General Public

Information is provided to the public through seminars and online resources.

Supporting Labeling Schemes

EBPD Building Energy Rating.

Supporting Certification Schemes

There are number of certification schemes available including Better Energy Warmer Homes Scheme, Greener Homes Scheme, Home Energy Saving scheme, National Retrofit programme, Better Energy: The National Upgrade Residential Programme,

Codes Free to Access?

Yes: http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,27316,en.pdf

Text on Code Access

http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,27316,en.pdf

Link to Other Databases

Text

IEA's Sustainable Buildings Centre BEEP Database.

Link

http://www.sustainablebuildingscentre.org/countries/Ireland