SolarChesa Stail'Alva, La Punt Chamues (GR) - Roof only - Efficiency: Depends on the number of cells (customized modules)Chesa Stail'Alva, La Punt Chamues (GR)Details
Residential and commercial building Feldbergstrasse - Roof only - Efficiency: 17%
Solution Year
2009
Building Age
1850-1899
Listed Building
No
Conservation Area
Yes
Documenting Institution
Eurac Research
Location
Basel, Switzerland - 255m
Building Type
Residential (urban)
Structure
Stone masonry wall
The Building
Residential and commercial building Feldbergstrasse
In the historical district of Basel, the building is positioned within Basel-Stadt's protected zone. The building's location on a bustling street near the Johanniter bridge resulted in significant environmental challenges, such as noise and pollution, which adversely affected the local residents' quality of life. Additionally, the apartments previously failed to meet modern comfort standards, resulting in low occupancy and necessitating this significant upgrade.
More DetailsThe Solution
What is the Solution?
The innovative photovoltaic (PV) system integrated into the building design meets the cityscape commission's requirements for façade and roof aesthetics. This system cleverly incorporates PV panels on the south pitch, which is free from any protective requirements, and extends to the former roofs on the north pitch. Furthermore, the PV mounting system used for this in-roof solution allows for a wide selection of solar modules with minimal installation effort, enhancing both the architectural integrity and the environmental efficacy of the building.
Why Does it work?
The installation on the south orientation capitalizes on maximum sun exposure; the design has been developed in accordance with the cityscape commission's requirements, ensuring that the installation does not compromise the aesthetic standards set for building façades and roofs. The mounting system used is designed for in-roof installations, which allows for a broader selection of solar modules and is designed to be installed with minimal effort, which reduces the labour and time required for setup. This efficiency not only lowers installation costs but also speeds up the process of converting to renewable energy.
PROS
- The photovoltaic system, designed to convert sunlight directly into electricity, has been successfully integrated with a solar thermal system, which utilizes solar energy to produce heat. This integration enhances the overall efficiency and performance of the renewable energy setup, optimizing the use of solar power for both electrical and thermal energy production.
CONS
- The colour of the panels does not closely match the hue of the underlying terracotta tiles. This discrepancy might affect the aesthetic integration of the panels with the traditional terracotta roofing, as the panels stand out rather than blending in harmoniously with the classic roof materials.
Type of installation
Replacement (building integrated - BIPV)
Part of the building
Roof only
Mounting system
aluminium frame (from Montavent)
Orientation
156
Slope
30
Area (m²)
63.7
Availability
Yes, available on the market
Manufacturer
Sanyo
Model
-Sanyo HIP 195 with integrating System INDACH (Roof and garret south)
-Sanyo HIP 245 (Garret north) -Special execution (Window lintel garret south)
PV module format
Standard modules (rectangular with standard size)
PV module format max
1319x894x35 mm
PV module type
Glass-Glass
PV cells technology
c-silicon
PV module efficiency
0.165
Total PV power
10
Surface PV power (W/m²)
156.98587127158555
PV energy production
18821 kWh/yr
Weight
15 kg x 1 module
Dummy modules used?
No
Frame
Yes
Overlapping
Yes
Colorization
No (black modules)
Colorization technology
No colorization
Glass structure
Shiny (with antireflection)
Technical drawings
Before retrofit
After retrofit
Assessment
PV installation type
Replacement (building integrated - BIPV)
PV position
Roof only
Coloured PV
No
Module efficiency
15% < Efficiency <= 20%
Building alteration
Yes, the building envelope was modified in a non reversible way
Investment cost
High
Circular approach
No
Location
Basel, Switzerland - 255m
Climatic Zone:Cfb






