Advertisement

The Cost of Building to the nearly-Zero Energy Building Standard: A Financial Case Study

  • Shane ColcloughEmail author
  • John Mernagh
  • Derek Sinnott
  • Neil J. Hewitt
  • Philip Griffiths
Chapter
Part of the Innovative Renewable Energy book series (INREE)

Abstract

The EU has mandated that all buildings are built to the nearly-Zero Energy Buildings (nZEB) standard from 2020. The Passivhaus standard has been in existence for over 25 years and potentially offers a tried and tested method of achieving nZEB, but can it be used as a cost-effective means of achieving nZEB?

This paper analyses the cost differential of building dwellings located in the south-east of Ireland to the nZEB standard using the passive house methodology, in comparison to building to the current prevailing minimum building regulations. A comparison of the two standards is also made to determine the suitability of using the passive house standard as a means of achieving nZEB compliance. In the analysis, the extra cost (compared with building to the minimum building regulations) include increased airtightness, insulation levels, a heat recovery and ventilation system and higher performing windows and doors. Cost reductions are achieved in the elimination of the traditional heating system, chimney stack and reduced site overheads. Costs are based on a designated date for the works of 1 January 2017, exclude VAT at the prevailing standard and reduced rates, exclude cost of site purchase, and exclude any design team or professional fees arising.

The costs are compared on an element-by-element basis using the National Standard Building Elements and Design Cost Control Procedures [1] National standard building elements and design cost control procedures. ISBN-13:978-1850531647 edn. Environmental Research Unit) format for comparison, the accepted industry standard in the Republic of Ireland for subdividing the overall cost of construction into logical and defined cost headings, and are assembled in order of the sequence of construction. The comparison shows that while differences exist in individual elements, the overall cost differential between constructing a residential dwelling to current building regs and that of Passivhaus standard is just +€131 excluding VAT. It is noted that while this specific analysis has been carried out on the basis of a case study, it is proposed that the analysis will be of general applicability given the similarities in the large cost items between those mandated by the building regulations and those required in order to achieve the passive house standard (such as insulation levels).

Keywords

nZEB Passive house Passivhaus Financial analysis 

Notes

Acknowledgements

The authors wish to acknowledge the support of the Interdisciplinary Centre for Storage, Transformation and Upgrading of Thermal Energy (i-STUTE) under EP/K011847/1 and Enterprise Ireland for funding this research. In addition, the authors are grateful for the assistance of Michael Bennett and Seamus Mullins, QS without whose assistance this paper could not have been completed.

References

  1. 1.
    Anon (1993) National standard building elements and design cost control procedures. ISBN-13:978-1850531647 edn. Environmental Research Unit.Google Scholar
  2. 2.
    Clarke J, Colclough S, Griffiths P, Mcleskey JT (2014) A passive house with seasonal solar energy store: in situ data and numerical modelling. Int J Ambient Energy 1:35–70Google Scholar
  3. 3.
    Colclough SM (2011) Thermal energy storage applied to the Passivhaus standard in the Irish climate. University of Ulster, NewtownabbeyGoogle Scholar
  4. 4.
    Colclough S, Griffiths P (2016) Financial analysis of an installed small scale seasonal thermal energy store. Renew Energy 86:422–428CrossRefGoogle Scholar
  5. 5.
    Hernandez P, Kenny P (2010) From net energy to zero energy buildings: defining life cycle zero energy buildings (LC-ZEB). Energ Buildings 42(6):815–821CrossRefGoogle Scholar
  6. 6.
    Colclough S, O'Leary T, Griffiths P, Hewitt NJ (2017a) The near Zero Energy Building standard and the Passivhaus standard – a case study. In: Passive and low energy architecture conference, Edinburgh, 3–5 July 2017Google Scholar
  7. 7.
    Anon (2012) Towards nearly zero energy buildings in Ireland, planning for 2020 and beyond. Department of Environment, Community and Local Government, DublinGoogle Scholar
  8. 8.
    Moran P, Goggins J, Hajdukiewicz M (2017) Super-insulate or use renewable technology? Life cycle cost, energy and global warming potential analysis of nearly zero energy buildings (NZEB) in a temperate oceanic climate. Energ Buildings 139:590–607CrossRefGoogle Scholar
  9. 9.
    Colley J (2017) Ireland’s largest passive house scheme shows way to nZEB. Passive House Plus pp 20. Available from: https://passivehouseplus.ie/magazine/new-build/ireland-s-largest-passive-house-scheme-shows-way-to-nzeb
  10. 10.
    Mullins S (2010) Last update, Rosslare case study – passive house cost analysis. Available: http://www.seai.ie/Renewables/REIO/SEAI_REIO_2010_Events/See_the_Light_Conference_9th_September_2010/Rosslare_Case_Study_-_Passive_House_Cost_Analysis.pdf. [July 2017]
  11. 11.
    Mullins S (2015) Last update, Madeira Oaks Affordable passive housing project – cost analysis (a case study). Available: http://www.passivehouseacademy.com/downloads/Cost_Analysis_of_Bennett_Wexford_Passive_House.pdf. [14 July, 2017]

Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Shane Colclough
    • 1
    Email author
  • John Mernagh
    • 2
  • Derek Sinnott
    • 2
  • Neil J. Hewitt
    • 1
  • Philip Griffiths
    • 1
  1. 1.Ulster UniversityNewtownabbeyNorthern Ireland
  2. 2.Waterford Institute of TechnologyWaterfordRepublic of Ireland

Personalised recommendations