Agro-voltaic greenhouses

This concept, born in the 80s of the last century in German research laboratories, enjoys special attention today. The race for sustainable energies, combined with the energy crisis, has significantly shifted the focus to all the possibilities of efficient crop exploitation and gaining significant space for the placement of photovoltaic panels.

Benefits

The coexistence of crops and solar panels implies the joint use of the two types of production of an area of land and the sharing of available light. Starting from these data, the design of such a hybrid system, which aims to deliver electricity and agricultural products, is relatively complex. Optimizing crop yield and quality must be harmonized with the most efficient placement of solar panels. Perhaps paradoxically, solar panels increase agricultural output in certain situations, providing crops with the necessary shade to reduce stress caused by excessive heat. At the same time, the same solar panels can reduce the degree of ultraviolet radiation, which also benefits crops.

Currently, there are photovoltaic technologies that can intelligently filter sunlight. Thus, only the wavelengths of the light spectrum necessary for their development will reach the plants. In contrast, the other spectrum colours, sufficient for generating electricity, will get the photovoltaic panels. Today only in the form of a life-size prototype, there are prerequisites for developing this technology and for it to enter mass production.

Positive Effects

Photovoltaic panels’ effects on greenhouses are extremely favourable, but the agricultural culture and the farm’s geographical position must be considered. In countries with a colder climate, the humidity will increase, and certain crops need good humidity control. At the same time, however, temperature fluctuations will be significantly reduced, leading to richer harvests.

In countries where the precipitation regime is low, and the temperature has large fluctuations, these systems bring major benefits to agricultural production, positively affecting the quality of the microclimate.

Field measurements displayed that the level of water evaporation among crops covered with solar panels is 14 to 50% lower. In contrast, the soil and ground-level plants near the solar panels benefit from significantly lower temperatures than in free zones.

Do you want such an agro-voltaic greenhouse?

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