Solar panels have become an increasingly common solution for generating electricity in both homes and companies, and thanks to them, we can obtain clean, sustainable electricity while minimizing energy costs. In order to improve their efficiency and ensure their longevity, it is essential to keep the solar panels in optimal conditions, so cleaning and regular maintenance will be key factors to prevent damage and optimize the performance of the panels. At Evidence Network we explain how to clean solar panels to get the most out of them and ensure your panels operate at maximum efficiency.
Importance of maintenance and cleaning of solar panels
If you have or want to have a solar energy kit, you will need to keep in mind that the maintenance and cleaning of the solar panels are two fundamental aspects for ensure its efficiency and prolong its useful life. The accumulation of dust, dirt, animal droppings, leaves or other debris can significantly reduce the light reception of photovoltaic panels, substantially reducing their ability to produce energy. In fact, it is estimated that a dirty board could lose between 15% and 30% of its performanceso the conservation of the panels is a key aspect to guarantee their performance. Thus, regular maintenance and cleaning of the panels will not only help improve their efficiency, but will also allow you to prevent technical problems or additional costs in the future since you will avoid some repairs.
Having an annual maintenance service will help you keep your plates in perfect condition, in order to optimize their performance and contribute to the long-term sustainability of the system. In this way, you will take advantage of greater energy efficiency, which has a notable impact on the cost of electricity.
Products to clean solar panels
Since cleaning the plates is essential to maintain their efficiency and performance, using the appropriate products will be essential to avoid damaging the panels or their coatings. In this sense, the most recommended products to properly clean solar panels are:
- Glass cleaner: This is the main product if you want to achieve a good result without damaging the surface. If you do not have this, you can use one of the following.
- Neutral soap: Perfect for removing grease or dirt, without damaging the surface.
- Distilled water: Prevents lime stains or other deposits that tap water can leave behind.
- Microfiber cloth or soft sponge: They are the best option to remove dirt and used liquid product, as well as to dry the surface without scratching the panels. If a brush is used, it should be very soft-bristled and not apply too much pressure when using it.
- Glass cleaning scraper: You can also use a rubber scraper, which is specific for cleaning the glass and avoiding scratching it.
- Water sprinklers with soft nozzles: to rinse without applying excessive pressure.
Safety measures to clean solar panels
Solar panels are usually installed on high ceilings, so carrying out a good cleaning usually involves certain risks to take into account. It is important to follow certain security measures:
- Disconnect the system: Before starting the cleaning, you must disconnect the photovoltaic system to avoid electrical risks.
- Use personal protective equipment: helmet, gloves or non-slip shoes are essential for this task.
- Use the precise tools: stable ladders, safety harnesses if necessary or cleaning tools with long handles to avoid climbing onto the roof can be very helpful.
- Avoid cleaning the plates in adverse weather conditions: especially days of snow, rain or strong wind, as the risk of suffering an accident is greater.
- Avoid cleaning during hours of greatest solar radiation: not only because of the heat, but also to prevent the panels from being damaged by a sudden change in temperature.
Steps to clean solar panels
Now that you know the importance and the safety measures you should take, it is time to know what steps to follow to clean the solar panels:
- Disconnect the solar system.
- Check the panels to identify where it has accumulated more dirt or if the plates have suffered any damage.
- Start the cleaning process with a initial rinse using distilled water and a gentle sprayer to wet the panels so the dirt softens.
- Spray the glass cleaner or apply a mild soap and water solution.6
- Rub gently the plates with a cloth, sponge or very soft brush.
- Rinse the plates with water distilled to remove soap or product residue.
- Dry with a microfiber cloth or let the solar panels dry outdoors.
To ensure that both safety measures and the cleaning process are followed, you can use a solar panel cleaning professionalespecially if the plates are located in areas that are difficult to access.
How often do you have to clean the solar panels and what is the best time?
As we have pointed out, cleaning the solar panels is essential to guarantee their optimal performance. But what is the appropriate cleaning frequency? Generally, it is recommended to clean the solar panels at least twice a year. However, the frequency may increase if the panels are located in areas with a lot of dirt and dust or highly exposed to bird droppings.
Regarding the recommended schedule to perform maintenance on the plates, it is recommended to do so during the early morning or late afternoonsince they are bands in which the panels are colder and you can avoid a sudden change in temperature. Try to avoid the hours of greatest sun exposure to prevent burns and damage to the panels.
If you want to read more articles similar to How to Clean Solar Panels, we recommend that you enter our Renewable Energy category.
