Solar panels in greenhouses are not profitable
Added on 29 November 2023
Greenhouses offer plenty of space for solar panels: they are often many hectares in size and they are also sturdy constructions. Installing panels is therefore technically possible., but an important disadvantage of the panels is that they intercept sunlight. A rule of thumb for growers is: 1% less light means 1% less crop production. The question is whether the production loss can be compensated by production ofelectricity.
Research center Vertify, Wageningen UR Greenhouse Horticulture and TNO are currently investigating the effect of transparent solar panels on greenhouses. Assumings that a certain percentage of the greenhouse roof is covered with solar cells, so certainly not the dark greenhouses which have been build recently at some locations.
It is about the combination of profitable crop cultivation with electricity production. But because both crops and solar cells compete for the available sunlight, it is expected that these panels will not produce enough power to compensate for the loss of crop production. This applies in particular to vegetable crops, where sunlight is a crucial production factor. Of course this depends largely on (future) electricity and product prices. The research is funded by ”Kas als Energiebron”, the innovation programme for the greenhouse horticulture sector.