The CoNZEBs project formed the main part of a session at the IAQVEC conference in Bari in September 2019. CoNZEBs project partner held in total 6 presentations including a project overview, different project results and one of the national exemplary NZEB buildings presented in the end-user brochure. The papers are published as open source documents in IOP Conference Series: Materials Science and Engineering, Volume 609.
The paper 'Survey and solutions for potential cost reduction in the design and construction process of nearly zero energy multi-family houses' summarises the efforts and outcomes of the CoNZEBs work on possible cost reductions during design and construction.
While the day in which nearly zero energy buildings is quickly approaching, their construction cost remains higher than minimum requirements' ones, in this framework operates CoNZEBs (Solution sets for the cost reduction of new Nearly Zero-Energy Buildings) Project, funded EU Horizon 2020. This paper explores a critical point identified by the project: potential cost reductions in the design and construction process. Starting from current costs and assessed the lack of available data, a survey is carried out focusing on two main stakeholders: i) design and planning process actors; ii) construction companies and contractors. About 100 answers are collected within the participant countries (Denmark, Germany, Italy, Slovenia), providing insights about issues and potential solutions for the process cost reductions. The results show differences among countries in terms of expectations for the potentials solutions, mainly related to the national market characteristics. The survey also shows the critical issue of the increase for construction costs respect to the originally planned ones Another session presents the impact of exemplary solutions aimed at optimising the design and construction process costs; they are grouped in three categories: specific building envelope and energy system technologies, specific design solutions, innovative project management systems. Quantitative examples are provided for each category.
The paper with the doi 10.1088/1757-899X/609/7/072054 is available as open access at IOP Conference Series: Materials Science and Engineering, volume 609 and at the CoNZEBs website
The CoNZEBs project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 754046. The paper reflects the authors’ views. The Commission is not responsible for any use that may be made of the information it contains.
In Germany, national co-funding is provided by Bundesministerium für Umwelt, Naturschutz, Bau und Reaktorsicherheit within the research initiative Zukunft Bau (SWD-10.08.18.7-17.33).