Vegetation Control in Solar Parks: The Foundation of Efficiency and Safety

Solar parks are long-term investments whose efficiency and profitability depend on several factors, including high-quality and regular maintenance. One often underestimated, yet critically important, aspect is vegetation control. Uncontrolled growth of grass, bushes, and other plants can create significant problems that affect both energy production, system safety, and longevity.

A professional approach to vegetation control ensures unshaded solar panel surfaces, reduces the likelihood of technical faults, and extends the service life of the equipment. It is an integral part of a comprehensive solar park O&M (Operations and Maintenance) strategy aimed at achieving maximum performance and minimising risks.

Vegetation growing directly next to or between panels can cause shading even at a low height. Even partial shading on one panel can significantly reduce the overall power of an entire string or even an inverter. This is due to the nature of solar panel series connections, where the weakest link determines the overall current flow.

According to industry studies, even 5-10% shading of a panel's surface can lead to up to 20-30% power loss in the affected string. Regular mowing and removal of vegetation ensures that panels receive maximum sunlight, thereby optimising energy production and increasing the solar park's revenue.

Dry grass and tall vegetation within a solar park create a significant fire risk, especially in dry and hot weather. Electrical sparks from damaged cables, inverters, or other components can easily ignite dry vegetation, causing widespread and costly damage to the infrastructure. Fires can destroy panels, cables, and other essential elements, leading to prolonged downtime and enormous financial losses.

Regular mowing of grass and removal of other plants is one of the most effective fire safety strategies in solar parks. This not only reduces the risk of ignition but also facilitates access to equipment in an emergency, allowing firefighters to perform their work more effectively.

Unmanaged vegetation hinders access to solar panels and other equipment, such as inverters and cable runs. This increases the time and cost for regular inspections, repairs, and panel cleaning. Tall grass can also conceal potential damage, such as rodent damage to cables or submerged panel fixings, making their timely detection and rectification difficult.

Furthermore, the presence of dense vegetation can impede natural ventilation around panels and inverters, leading to overheating and reducing their efficiency and service life. By ensuring a clean and tidy environment, the quality of maintenance work and employee safety are improved.

Effective vegetation control involves planned and regular grass mowing, bush trimming, and, if necessary, plant removal. The frequency depends on climatic conditions and the intensity of vegetation growth in the specific region. In Latvian conditions, this usually means several mowing sessions during the growing season.

At pvcare.eu, we offer specialised grass mowing services, tailoring them to the specifics of each solar park. Our team is equipped with the necessary equipment and knowledge to ensure efficient and safe vegetation control, minimising impact on solar panel surfaces and other park components. This ensures optimal operation and longevity of the solar park.