A recent study by Murdoch University in Perth, Australia, has investigated how transparent solar modules influence the energy consumption of greenhouses. The results show considerable potential for energy savings and offer new insights into the integration of photovoltaic technology in agriculture. Is this the next step in solar energy?
Key findings of the study:
- Reduced energy consumption: the use of transparent solar modules has reduced the greenhouses’ electricity requirements by around 50%.
- Optimized use of light: The special glazing filters out almost all UV radiation, while allowing most of the visible light for photosynthesis to pass through.
- Plant growth: Certain crops such as peppers, tomatoes and garden lettuce showed equivalent growth under the changed lighting conditions; chili peppers grew even better. Other plant species such as garlic, wheat and sunflowers, on the other hand, showed slower growth.
Solar energy: innovative technology for sustainable agriculture
The transparent solar modules used in the study by Murdoch University in Perth replace the conventional glass surfaces of greenhouses. These modules reduce the intensity of solar radiation from 80 % to 55 % compared to outdoor conditions. A key advantage of this technology is the selective filtering of the light spectrum:
- UV radiation: is almost completely filtered out, which can promote plant growth.
- Visible light: is largely transmitted to support photosynthesis.
This adaptation of the light spectrum makes it possible to make optimum use of the wavelengths that are important for plant growth and to generate energy at the same time.
Solar energy: Practical effects and potential savings
The energy generated by the solar panels was used to power systems such as ventilation, irrigation and lighting in the greenhouses. The results are impressive in two respects:
- Energy savings: the greenhouses equipped with solar panels were able to cover about half of their own electricity needs.
- Water efficiency: Water consumption was reduced by almost a third.
These savings are particularly remarkable as the region around Perth is one of the sunniest areas in the world. In less sunny regions, results may vary, but the technology offers significant potential for sustainable agriculture.
Conclusion
The Murdoch University study shows that the use of transparent solar panels in greenhouses can not only significantly reduce energy consumption, but also have positive or neutral effects on the growth of many plant species. This technology therefore offers a promising opportunity to promote energy efficiency and sustainability in agriculture.
