D e s i g n I s s u e s f o r N e t Z e r o – E n e r g y B u i l d i n g s
47
Final Remarks
In order to present and discuss the design strategies used in NZEB design, a number of
9 projects have been selected from IEA Task 40/Annex 52 (“Towards Net Zero Energy
Solar Buildings”) project database. Although there is no standard approach for designing
a Net Zero-Energy Building (as there are many different possible combinations of
passive and efficiency measures, utility equipment and on-site energy generation
technologies able to achieve the net-zero energy performance), a close inspection of the
strategies and indicators of the relative performance of the 9 case studies revealed that it
is possible to achieve zero-energy performance using well known strategies, a fact which
provides evidence in the support of the theory that zero-energy buildings design is a
progression of passive sustainable design.
ACKNOWLEDGEMENTS
The authors of this paper gratefully acknowledge the contributions of IEA Task 40/Annex
52 members, as well as the support of all building professionals linked to case studies
under discussion.
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