BIPV - Building Integrated Photovoltaic

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Azurmendi Restaurant

Architectural system: 
Semi-transparent roof
Tilted roof
Semi-transparent façade
Cold façade
Building use: 
commercial
BIPV costruction year: 
From 2005 to 2012
Source: 
IEA PVPS Task 15
BIPV roof and façade from the inside © Onyx Solar
Location: 
Barrio Leguina, s/n, 48195 Larrabetzu, Biscay, Spain

Designed following an overall approach based on sustainability, the building is a bio-climatic structure, LEED Silver certified, where three bodies are combined: greenhouse, dining room and kitchen. There are many areas that influence energy in the building, such as offering employees options to arrive by bicycle and to take a shower later, creating an area for recharging electric cars, controlling the levels of natural and artificial lighting. The BIPV system is integrated in part of the semi-transparent roof and façade of the building, shading the interior spaces. Designed following an overall approach based on sustainability, the building is a bio-climatic structure, LEED Silver certified, where three bodies are combined: greenhouse, dining room and kitchen. There are many areas that influence energy in the building, such as offering employees options to arrive by bicycle and to take a shower later, creating an area for recharging electric cars, controlling the levels of natural and artificial lighting. The BIPV system is integrated in part of the semi-transparent roof and façade of the building, shading the interior spaces. 

Aesthetic integration

The BIPV modules are completely integrated in the building image, being semi-transparent elements characterized by a uniform appearance, that are not so different from traditional glass panels that could be integrated in the roof and the façade.

Energy integration

The building has been LEED Silver certified. The BIPV system is part of an overall concept based on the sustainability from different points of view. Besides the photovoltaic source, the building uses geothermal energy that acclimatizes almost 100% of the building. Other aspects are: the materials used are recycled or recyclable; there is a green cistern-roof where rainwater is recycled for irrigation and WC cisterns, which, in addition, serves as a very good insulator.

Technology integration

The BIPV system is made of insulated glass-glass modules (L vision), which incorporate a thin-film amorphous silicon layer that filters the natural illumination, with a 10% of visible light transmittance level.

Decision making

The Azurmendi restaurant is a bio-climatic structure with a greenhouse where the cooking ingredients are what is planted there. It was designed as a sustainable building in terms of water, materials and energy. The photovoltaic system was exposed in the atrium roof providing an educational message to the customers. It also represent an important shading structure to prevent the overheating of the interior space.

Lesson learnt

The PV system helped to address different aspects: the aesthetic, as the architectonic integration is absolute; the energy-related, because the PV system generates electricity for the lighting of the building and it helps to shade the space (Arch. Naia Eguino).

Data

PROJECT DATA

Project type: 
New construction
Building function: 
Commercial
Integration system: 
Semi-transparent tilted roof
Semi-transparent cold façade

BIPV SYSTEM DATA

Module type: 
Custom made modules
Solar technology: 
Amorphous silicon thin-film
System capacity [kWp]: 
21
System size [m²]: 
283.6
Module size [mm]: 
1,628 x 1,309, 2,653 x 1,309
Orientation: 
South-West
Tilt [°]: 
90 (façade), 6 (roof)

BIPV SYSTEM COSTS

Total cost [€]: 
-
€/m²: 
-
€/kWp: 
-

PRODUCER DATA

Producer: 
Onyx Solar
Address: 
C/ Río Cea 1, Ávila, Spain
Contact: 
info@onyxsolar.com +34 920 21 00 50

Map

Barrio Leguina, s/n, 48195 Larrabetzu, Biscay, Spain

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