Solar Panel Cleaning and Maintenance

The Irish solar panel industry is experiencing a significant boom, with an anticipated annual compound growth rate of 51% until 2030. Home and business owners throughout Ireland are already witnessing the benefits of integrating solar technology into their energy-sourcing operations.

At the forefront of the Irish Government's Climate Action Plan 2023, solar infrastructure is one of the primary focal points. The current plan aims to generate 8 GW (8 billion watts) of electricity using solar technology by the end of the decade, including the implementation of 500 MW of community-based, local projects.

Solar photovoltaic panels, driven by internal semiconductors, capture the sun's radiance on their silicon surface. The collision of highly charged protons with silicon atoms generates an intense electrical current, which is then exported through the junction box.

While the true functionalities of solar technology are not yet fully understood by many, one evident and crucial aspect of solar ownership is easy to grasp. The accumulation of dirt and other debris on panels can hinder access to one of the most significant technologies of our time.

At Wattcharger, we are dedicated to providing factual information to environmentally-conscious consumers. Today, we will discuss solar panel maintenance and share essential steps that homeowners can take to ensure optimal performance.

Solar Panel Buildup

To comprehend the importance of keeping your solar panel array clean and functional, it is crucial to first understand the internal workings of the device. Solar PV panels rely on internal cells activated by sunlight exposure. Any material that impedes their ability to capture solar radiance jeopardizes the functionality of the entire solar array.

Typically, a solar panel consists of three external components: a glass cover, an aluminum frame, and a polymer back sheet. Allowing buildup on any of these components can negatively impact the health and capabilities of the panel array.

Accumulation of dust, dirt, grime, and organic materials such as bird droppings can block sunlight, reducing the amount of direct current generated. Moreover, water exposure can also pose a problem for your solar array.

Hard water contains mineral compounds that can cause issues. While some solar owners may consider using a hose to clean their panels, there is more to the picture than meets the eye.

Water spots can dry unevenly, leading to the formation of calcium deposits on the solar array. If left unchecked, this scaling can permanently impair the functionality of the panel, reducing electrical output and disrupting the polarity balance.

Benefits of Clean Solar Panels

The cost of solar panels in Ireland can range from €5,000 to around €20,000, depending on the pv system's capacity. Such an investment requires proper maintenance and a comprehensive understanding of its functioning.

One common misconception about solar power panels is that they only generate energy when the sun is shining. However, even on overcast days or rainy days, the sun's UV rays are still present, emphasizing the importance of maintaining your array in prime condition.

Energy efficiency is crucial for solar panel efficiency, measuring the amount of pure sunlight converted into electricity. In Ireland, the average solar efficiency ranges from 14% to 22%. Physics Professor Seamus Curran at the University of Houston has suggested that a grimy surface could reduce efficiency by up to 30%, rendering the array virtually non-functional.

This underscores the importance of placing the panel array in a suitable location, free from shade, obstructions, or poor exposure conditions. An average Irish panel array can generate up to 150 watts of electric power per square meter of silicone.

To maximize panel performance, it is critical to maintain a clean array. In Ireland, a 4-kW capacity of electricity could power a typical home for an entire year. Every centimeter of the array matters, and allowing parts of it to become dirty or blocked can lead to higher costs and less renewable energy for homeowners.

Cleaning Your Solar Panels

Now that we've discussed the significance of proper solar panel maintenance, let's explore the appropriate cleaning procedures to effectively scrub those panels.

During cleaning, utmost care must be taken not to scratch the panels. Any lesions or dents on the surface will negatively impact the cells' access to solar heat, resulting in reduced efficiency or compromised performance.

For ease and functionality, it is recommended to use a solar panel cleaning kit, which includes a biodegradable soap solution, a wiper, and a soft brush. This purpose-made cleaning solution helps avoid harmful admixtures found in common water, such as calcium compounds.

Using a non-abrasive cloth is essential to prevent scratching the surface, which is easier than one might think. For safety, investing in a long-handed wiper is advisable, especially when the array is in a challenging location, like a roof. If the cleaning requires climbing to heights, always ensure that assistance is nearby and that all safety precautions are observed.

Moreover, performing any maintenance on solar panels in the early morning is safest since the array will be inactive, reducing the risk of electrical shocks. Working before the day's peak heat can also prevent any cracks in the panel, which may occur when the surface is touched during the hottest hours.

To ensure timely upkeep without disrupting panel operations, establish a cleaning regime that fits into a schedule. This proactive approach allows homeowners to deal with organic material promptly and keep their solar panels running efficiently.

Self-cleaning Technologies

In the future, we may witness the emergence of solar panels equipped with purpose-built cleaning abilities. However, due to the delicate nature of silicone surfaces, some researchers are exploring innovative designs that could lay the foundation for self-cleaning panels.

German scientists have embarked on the initial stages of developing a self-cleaning panel. Early prototypes feature a titanium-oxide coating that effectively breaks down organic molecules upon exposure to UV light. Although this technology is still in its early stages, it holds the potential to revolutionize solar panel maintenance in the near future.

Professional Solar Panel Cleaning services

On the other hand, there are several companies in Ireland that offer solar cleaning services. While rates and procedures may vary based on the array size, reaching out to Wattcharger through the provided tool can be your first step in connecting with a reliable party for top-grade cleaning.

When choosing a professional cleaning provider, it is essential to check their credentials first. Most solar panels come with a warranty, so it is crucial to ensure that any work carried out by the provider does not invalidate the panel's warranty. If there is any confusion regarding this matter, it's best to check with the manufacturer.

As with all installation providers, it is important to conduct independent research to ensure that they can be trusted to perform the task safely, efficiently, and responsibly.

Factors Affecting Regular Cleaning

Like many things, there is no standardized answer to how often solar panels should be cleaned. While annual cleanings should be considered a minimum, several factors can contribute to the need for more frequent cleanings of the panel array.

Ideally, prolonged exposure to clear, unobstructed sunlight is best for solar panels. Under such conditions, the risk of precipitation or other natural barriers coming into contact with the panel is low. However, water can come from various sources, and even mere dew can lead to hard water deposits, compromising the panel's intricacies.

During periods with higher levels of precipitation, it is crucial to keep a vigilant eye on the panels. Snow, ice, or sleet can pose direct challenges to the panel's efficiency if left untreated.

One of the most harmful organic compounds to solar surfaces is found in animal droppings, particularly those of birds. If not cleaned promptly, these organic compounds can heat up faster than the silicone surface, leaving the entire system dangerously exposed to overheating. Manufacturers have implemented various bird-proofing measures, such as installing wire meshes to discourage birds from taking shelter on the large, flat area of the panels.

As solar energy becomes increasingly integrated into daily life, many homeowners in Ireland have transitioned to this future-proof renewable strategy. Several grants, like the SEAI's Home Solar Grant, make it easier for homeowners to invest in solar panels.

To learn more about the exciting world of solar energy or to receive a free quote for solar panel installation, do not hesitate to contact our experts at Wattcharger using the contact form below.