In 2018, solar energy accounted for 2.1% of global electricity production, and it has continued to grow since then. However, solar energy production is heavily dependent on weather conditions. Traditional solar panels are unable to generate electricity when it rains, rendering the vast fields of panels useless during such periods. However, a group of researchers in China has recently introduced a new type of solar panel that can generate electricity even in the rain.
These innovative panels harness the power of raindrops to produce energy. As raindrops fall onto the surface of the panel, they create microvibrations that engage a gear mechanism, ultimately generating electricity.
Although this technology may initially seem far-fetched, the energy generated from raindrops is not insignificant. The researchers from Tsinghua University, who pioneered these panels, report an output of 200 Watts per square meter. In comparison, the latest generation of traditional solar panels achieves a production of 400 W/m2.
This advancement in technology holds great potential for regions that experience heavy rainfall. Places like Southeast Asia, known for its rainy seasons, and South America could greatly benefit from this system.
Even in France, pluviovoltaic panels could offer a viable solution. Some regions in the country, particularly in mountainous areas, experience frequent and intense storms throughout the year. Utilizing these panels in such areas could enable the production of electricity.
The key to the success of these rain-powered panels lies in the intensity of the rainfall. Scientists emphasize that a constant drizzle would result in poor performance. However, a short but intense storm would yield better results.
At present, the Chinese researchers' solution is not yet available for commercial use. However, it paves the way for the development of "bi-mode" panels capable of generating electricity both in the rain and under direct sunlight. These hybrid panels have the potential to operate year-round, offering maximum efficiency and utilization. Additionally, some scientific studies suggest that the temperature difference between day and night can also contribute to generating a small amount of energy.
As solar panels continue to play an increasingly crucial role in the renewable energy sector, optimizing their performance and operation becomes imperative. Through advancements such as rain-powered panels, the potential of solar energy can be further harnessed, driving us closer to a sustainable and greener future.
