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This commercial and residential building of 1960’s has been enlarged and refurbished becoming the largest plus energy building in Switzerland and getting the Swiss Solar Prize 2013. The new building envelope stands out by a total integration of PV antireflection panels, placed in balcony parapets and as frame of large openings, also creating a renovation at urban level. The architectonic and energetic choices allowed a good balance between passive devices and integrated solar technology, according with Minergie-A standard.
| Project | Renovation Viridén |  |
| Localition | Romanshorn (CH) | |
| Latitude | 47° 33' | |
| Completion year | 2012/2013 | |
| Architect | Viridén + Partner AG, Zürich | |
| Typology | Residential | |
| Category | Renovation | |
| Surrounding | Urban |
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| Technology | Multicrystalline | |
| Installed Power | 53 kWp (facade); 26.3 (roof) | |
| Orientation | South - West | |
| PV Module |
SANYO HIT-H250E01 LG 285N |
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| Dimensions | 295(facade); 146(roof) | |
| Transparency |
Opaque |