Photovoltaic roof-shade system for food and electricity production in a greenhouse

The use of renewable energy in modern greenhouse management is important to achieve efficient and sustainable food supplies for a world with an increasing population.

This study assessed the performance of a blind-type shading regulator that can automatically rotate semi-transparent photovoltaic (PV) blades installed on the greenhouse roof in response to sunlight variation.

The PV blind oriented parallel to the roof partially blocked intense sunlight penetration into the greenhouse, but it transmitted sunlight during cloudy time by turning the blind bearing to be perpendicular to the roof.

A stable irradiation environment is therefore producible in the greenhouse under variable sky conditions. Annual operations demonstrated that the blinds’ own generated electrical energy can sustain PV blind operation and produce surplus electrical energy. 

Find the study here.

Source: ResearchGate (Hidekazu Yoshioka)


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