The Building

Building pre-intervention

Building pre-intervention: Schutz-Rettung_Zürich ZH_(C)Stadt Zürich_Pre_1.jpeg
Building pre-intervention: Schutz-Rettung_Zürich ZH_(C)xxx_Pre_2.jpeg

Building post-intervention

Building post-intervention: Schutz-Rettung_Zürich ZH_(C)3S_Post_1.webp
Building post-intervention: Schutz-Rettung_Zürich ZH_(C)3S_Post_2.webp

Headquarters of “Schutz & Rettung” of the city of Zurich

The roof of the Schutz & Rettung Zurich headquarters was renovated in 2021. Together with the specialists the client's representatives looked for a suitable solution for the use of solar energy. Instead of the originally planned rooftop system, they decided on a pilot project with a colourful roof-integrated solar solution. The result was one of the largest coloured solar roofs in Europe in the middle of the city of Zurich. The chosen solution could be a solution for listed buildings.

The Solution

Solution post-intervention

Solution post-intervention: Schutz-Rettung_Zürich ZH_(C)3S_Post_3.webp
Solution post-intervention: Schutz-Rettung_Zürich ZH_(C)3S_Post_4.webp
What is the Solution?

Combination of active and inactive coloured solar modules integrated in the roof

Why Does it work?

The best compromise between performance and aesthetics. Optimum architectural integration, respecting the architectural aspects of the building and area.

PROS
  • Adaptable to building and site requirements (colour, texture, shape)
  • The chosen solution could be a solution for listed buildings.
  • The inactive modules provide a neat finish right down to the edges/angles, what not only preserves the appearance of the building, but also optimizes energy production.
CONS
  • Lower energy performance than standard modules.
  • 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
18° (S-W) -39° (S-E)
Slope
32°
Area (m²)
500
Availability
Yes, available on the market
Manufacturer
3S Solar
Model
MegaSlate FLAIR
PV module format
Customized modules
PV module format max
1300 x 875 mm
PV module type
Glass-Backsheet (opaque)
PV cells technology
c-silicon
PV module efficiency
18.2% for the largest
Total PV power
76 kW
Surface PV power (W/m²)
152 W/m2
PV energy production
abt. 70'000 kWh/yr
Weight
information not available
Dummy modules used?
Yes
Frame
No
Overlapping
No
Colorization
Yes (coloured modules)
Colorization technology
Coloured foil
Glass structure
Shiny (with antireflection)

Before retrofit

After retrofit

Assessment

PV installation type
Replacement (building integrated - BIPV)
PV position
Roof only
Coloured PV
Yes
Module efficiency
15% < Efficiency <= 20%
Building alteration
Yes, the building envelope was modified in a non reversible way
Investment cost
Medium Low
Circular approach
No

Location

8003 Zürich ZH, Switzerland - 413m
Climatic Zone:Cfb