Pilot Projects

Startup factory Technopark in Winterthur (Switzerland)
Retirement home Eichgut in Winterthur (Switzerland)
Residential building Mattenbach in Winterthur (Switzerland)
Factory yard Werkhof Scheidegg in Winterthur (Switzerland)
Energy green roof realised by business partner Fenaco in Winterthur (Switzerland)
Energy green roof realised by business partner BLDVEG in Hanaton (Israel)

Pump station for the sludge wastewater treatment in Sudogda (Russia)

School for handicapped children in Sosnovka (Kyrgyzstan)

The microclimate on the roof and the ground close to the building are different. The urban heat effect is much higher on the roof; it directly affects the vegetation growth, evapotranspiration rate of soil and plants, plants resistance to heat and prolonged drought periods, PVs efficiency and productivity in time. We should face all these highly stressful conditions to which plants are exposed; we need to create smart innovative solutions to fight extreme climate events, that getting more and more dangerous in the urban environment.

Werkhof Scheidegg Test Roof (2013-2015)

With the collaboration of the Zurich University of Applied Sciences (ZHAW) the classical installations have been tested for 3 years on the cooling effect of the flat versions of 15 and 20 tilts modules from Germany with subsconstruction from ZinCo. The research was conducted from 2013 to 2015 when millions of data were collected and analysed. The final result has demonstrated that the cooling effect of 3 °C on the roof improves the productivity of classical PV installations by only 0,7%.

Moreover, we studied the layout of the energy green roof and the reaction of the gravel of the system, applying different types of substrates on different substrate layers.

View research papers by ZHAW on performance analysis and symbiosis of energy green roofs:

The cooling effect on classical installations is only 3 °C – it is less than 1 % of the higher productivity of PV modules.

Technopark Test Roof (2016)

In addition, to the cooling effect we researched energy production of different sub-constructions of PV installations with classical PERC cells made by Solarspar such as Est-West vertical installations, East-West butterfly installations with an inclination of 15-30 degrees, classical 10 angle degrees flat installations (North-South and East-West).

The Est-West classical flat modules were installed to optimise the use of the roof. They were put directly on the ground, instead butterfly and vertical were installed about 20-40 cm over the ground. For this energy green roof, the classical build-up from ZinCo was implemented and integrated with butterfly and vertical installations.

Eichgut Test Roof (2019)

We used this energy green roof as a research roof to test the reflection effect of the albedo of such materials as gravel, darker-lighter topsoils and surfaces, a variety of soils like recycled soils and classical type, and silver-leaved plants.

Mattenbach Test Roof (2021-2024)

On this research roof, different light-coloured materials such as marble have been tested for direct and indirect light reflection (albedo effect) that increases the efficiency and productivity of PV installations. Silver-leaved plants also play a role in the reflection of sunlight. We need them as the necessary piece of the puzzle in the whole system.

Three types of modules from the manufacturer Hevel were used in different configurations:
34 pieces of 330 Wp with HTJ; 60 cells monofacial portrait. Butterfly (15° tilt).
113 pieces of 390 Wp bifacial; 72 cells. Vertical and Butterfly (15° tilt).
148 pieces of 255 Wp bifacial; 48 cells. Vertical.

Microclimate is the complex of environmental variables which include temperature, radiation, humidity and wind speed — that provide meaningful indicators for habitat selection and other ecological activities. We measure microclimatic parameters such as temperature, radiation, albedo, precipitation rate and amount.

Resistant wood in the soil (Robinia is the only type growing in Europe that has resisted in the soil for over 40 years) can replace steel for beam support of vertical PV installations. We tested Black Locust (Robinia pseudoacacia) flagged as an invasive species in Switzerland. Protect your land from alien species that disrupt local ecosystems. The use of Robinia is also a solution to reduce carbon footprint emissions.

Explore our research on the multifunctionality of smart solutions for energy green roofs, realised by ZHAW, A777 and the Swiss Federal Office of Energy:

View German versions:

Sudogda‘s Test Roof (2021)

Sosnovka’s Test Roof (2022)

BLDVEG‘s Test Roof (2023)

Fenaco‘s Test Roof (2023)