Z E M C H 2 0 1 2 I n t e r n a t i o n a l C o n f e r e n c e
286
Figure 8: Grid interaction of Minergie-A and Net ZEB on a monthly base.
5. Summary
During the first 16 months after introduction of the Minergie-A standard, about 150
buildings applied for a certification. The concept of a net zero energy balance for HVAC
is a challenge for architects and designers. Minergie-A allows different energy concepts
to fulfill the requirements. The common Minergie-A building is very well insulated,
features a heat pump and generates renewable energy on-site by photovoltaic panels.
After one year of Minergie-A it can be clearly stated that a net zero energy balance is
possible for single family and apartment houses. The additional requirement in regard to
embodied energy is not too onerous but also not too relaxed. Architects and designer
welcome that a limit for embodied energy is given.
The difference between Minergie-A and Net ZEB is that the net zero energy balance of
Minergie-A excludes plug-loads and lighting. The comparison of life cycle energy shows
that the life cycle energy of a Net ZEB is much lower than for Minergie-A. Concerning the
life cycle energy, a Net ZEB is preferable.
Due to the larger collector areas necessary for Net ZEBs, however, the storage of the
electricity generated on-site moves into focus even more. Grid interaction of such
buildings must be looked into in more details, possibilities to increase on-site
consumption should be identified.
6. References
[EnDK 2009]
Gewichtungsfaktoren_d[1].pdf,
[EnDK 2011]
Medienmitteilung der Konferenz der kantonalen Energiedirektoren, 2.
September 2011,
[EU 2010]
Energy Performance of Buildings Directive 2010/31/EU (EPBD),
Official Journal of the European Union, 18/06/2010,
[MB2031 2009]
Energieausweis für Gebäude, 2009
[MB2032 2010]
Graue Energie, 2010
[Minergie]
[Program]
[SIA380 2009]
SIA 380/1:2009: Thermische Energie im Hochbau
