Lakefront Villa in Lavaux - Roof only - Efficiency: 13.82%
Solution Year
2020
Building Age
1900-1944
Listed Building
No
Conservation Area
Yes
Documenting Institution
LMNT Consultancy
Location
1095 Lutry VD, Switzerland - 379m
Building Type
Residential (rural)
Structure
information not available
The Building
Lakefront Villa in Lavaux
The villa is located in the beautiful UNESCO World Heritage protected Lavaux region in the Canton of Vaud, Switzerland. The owner's aim was to renovate the house with as close to a zero carbon footprint as technically possible. The challenge was to install a solar solution without disrupting the visual beauty of the roof and its surroundings. The construction permit for the solar roof was submitted to the Consultative Commission of Lavaux (CCL).
The Solution
What is the Solution?
Solar tiles as an ideal replacement for traditional slate tiles. It is suitable for heritage buildings but also new construction where a matt finish is desired.
Why Does it work?
The solar tiles are perfect for this conservation environment, providing 100% full coverage without altering the visual aspect of the property located in this heritage protected region.
PROS
- Adaptable to site requirements (colour, texture, shape)
- Resemblance to tiles (mimetic).
- Preservation of the appearance of the conservation area while producing energy in the new building.
CONS
- Lower energy performance than standard modules.
- Number of elements and "one-off" pieces.
- More demanding to implement.
- Much higher costs than a standard solution.
Type of installation
Replacement (building integrated - BIPV)
Part of the building
Roof only
Mounting system
information not available
Orientation
29° (S-W)
119° (N-W)
-151° (N-E)
-61° (S-E)
Slope
30°, 36°, 24°
Area (m²)
201
Availability
Yes, available on the market
Manufacturer
Freesuns
Model
Solaris Heritage
PV module format
Customized modules
PV module format max
Basic dimensions of the rectangular tile : 700 x 460 mm (700 x 175 mm)
PV module type
Glass-Glass
PV cells technology
c-silicon
PV module efficiency
13.82%
Total PV power
28.6 kW
Surface PV power (W/m²)
138.2 W/m2
PV energy production
abt. 25'700 kWh/yr
Weight
47 kg/m2
Dummy modules used?
Yes
Frame
No
Overlapping
Yes
Colorization
No (black modules)
Colorization technology
No colorization
Glass structure
Mat/Satin-finished
Additional documentation
Before retrofit
After retrofit
Assessment
PV installation type
Replacement (building integrated - BIPV)
PV position
Roof only
Coloured PV
Yes
Module efficiency
10% < Efficiency <= 15%
Building alteration
Yes, the building envelope was modified in a non reversible way
Investment cost
Medium Low
Circular approach
No
Location
1095 Lutry VD, Switzerland - 379m
Climatic Zone:Cfb






