Strategies for the implementation of net zero energy buildings in the Ghanaian construction industry

Purpose
Despite the current attention on net zero energy buildings (NZEBs) and the renewable energy potential of developing economies, their potential in developing economies remains underutilized. This untapped opportunity is largely attributed to a lack of knowledge regarding effective NZEB implementation strategies. Therefore, this study investigates the strategies for the implementation of NZEBs in a developing economy.

Design/methodology/approach
The study used a mixed-methods approach, conducting a quantitative survey among 120 construction professionals and semi-structured interviews with 10 NZEB experts to develop a conceptual framework for NZEBs implementation in the Ghanaian construction industry (GCI). The quantitative data collected were analysed using mean scores, standard deviation, one-sample t-test and normalisation value (NV) test. The qualitative results were thematically analysed and compared with the quantitative findings to validate and enrich the interpretation through detailed insights from interviewees.

Findings
The findings highlighted seven key strategies critical to NZEB implementation in the GCI: creation of NZEB awareness among design professionals and contractors; academic institutions’ intervention; government promotion of NZEB awareness; specialist training in renewable energy technologies; educating building owners about energy-saving benefits; ensuring adequate experts for NZEB quality assurance and publicizing the health benefits of NZEBs.

Originality/value
The findings of this study shed light on a relatively under-reported area within the built environment of a developing country, particularly Ghana. This offers insights and contributes new and supplementary knowledge on strategies for implementing NZEBs.