Academic paper by Daniel Coyle on the cost optimality of Passive House standard deep retrofit of an existing dwelling has been published in the recent addition of SDAR Journal of Sustainable Design and Applied Research.
The paper which is a summary of Daniel’s MSc Research Thesis, examines an economic analysis of a Passive House Retrofit Project in Galway City, Ireland, using Life Cycle Cost Analysis (LCCA). This is a deep retrofit of a semi-detached house involving significant capital investment to achieve Passivhaus standard and significant reductions in energy usage; however, the payback is long. The critical impact of discount rate, investment time frame and energy price escalation on cost optimality for deep retrofit projects is highlighted.
Download a copy of the SDAR paper here: https://arrow.dit.ie/cgi/viewcontent.cgi?article=1043&context=sdar
Download the full MSc Research Thesis here: https://arrow.dit.ie/builtmas/22/