How Commercial Cleaning Can Improve the Efficiency of Your Solar Panels?

Lenard Nagy
July 12, 2023

Solar panels are an excellent way for homes and businesses across Ireland to generate clean and renewable energy. Over the past few years, many homeowners and businesses have made the wise decision to invest in solar panels, taking advantage of the country’s generous sunshine hours.

However, it’s crucial to understand that maintaining these panels is just as important as installing them. One pivotal maintenance task that can’t be overlooked is commercial cleaning. By keeping solar panels clean and debris-free, you can maximise their efficiency and longevity with the help of Perfect Clean, a cleaning company that understands the importance of sustainable living.

In this extensive guide, we will delve deep into how commercial cleaning by Perfect Clean can significantly improve the efficiency of your solar panels, ensuring they’re always performing at their optimum.

Why Is Cleaning Solar Panels So Important?

Solar panels operate by allowing photons from the sun's rays to knock electrons free from atoms. This process generates a flow of electricity. Any obstruction or layer of dirt on the panels can obstruct these photons, thereby reducing the efficiency of your solar setup.

Dirt and Debris Impact on Efficiency

Solar panels in Ireland, much like anywhere else, are exposed to natural elements. Rain, dust, pollen, bird droppings, and more can accumulate on the surface.

Over time, these can form a layer of grime that hampers the panel's ability to absorb sunlight efficiently. The more obstructions on the panel, the less electricity they can produce. In some cases, even a thin layer of dirt can decrease efficiency by up to 25%.

Minimising Wear and Tear

Beyond efficiency, cleaning your solar panels also helps in increasing their lifespan. When debris accumulates and isn't cleaned, it can lead to scratches or cause other minor damages to the panel surface. Over time, these can contribute to more significant wear and tear.

The Irish Climate and Its Impact on Solar Panels

Ireland is blessed with a temperate maritime climate, characterized by mild temperatures and consistent rainfall. While this offers a lush green landscape, it also presents unique challenges for solar panels.

Consistent Rainfall

The consistent rainfall in Ireland might seem like it would naturally clean the panels. However, rainwater contains natural minerals which, when left behind after the rain evaporates, can leave residue on the panels.

Over time, this can form hard water spots which are tough to remove and can obstruct the panels' ability to function optimally.

Pollen and Organic Matter

The beautiful green landscapes and flora of Ireland mean that during certain times of the year, pollen and other organic matters are in abundance.

These can settle on your solar panels and, when combined with moisture, can form a layer of grime.

Benefits of Commercial Cleaning for Solar Panels

Specialised Cleaning Techniques

Opting for commercial cleaning ensures that your panels are cleaned using specialised methods and tools designed explicitly for solar panels. These techniques consider the delicate nature of the panels and clean them without causing damage.

Higher Efficiency Rates

Regularly cleaned solar panels ensure maximum sunlight absorption, leading to higher efficiency rates. With commercial cleaning, you can be assured that every inch of your panel is free from obstructions, ensuring optimum performance.

Prolonged Panel Lifespan

With the careful and precise cleaning methods used in commercial cleaning, the risk of scratches, damages, and wear and tear is significantly reduced. This, in turn, ensures that your panels have a prolonged lifespan, giving you better value for your investment.

Enhanced Environmental Impact

Commercial cleaning of solar panels goes beyond just improving their efficiency. By maintaining the panels' optimal performance, you contribute to the reduction of carbon emissions and the overall environmental impact. Cleaner panels require less energy to produce the same amount of electricity, aligning with sustainable energy goals.

Professional Expertise

When you choose commercial cleaning services for your solar panels, you're benefiting from the expertise of professionals who understand the intricacies of solar panel maintenance. These experts can identify potential issues early on and provide recommendations to ensure your panels remain in top condition, minimizing unexpected downtimes and repair costs.

Customised Cleaning Schedules

Commercial cleaning services often offer the flexibility of setting up cleaning schedules tailored to your specific needs. This ensures that your solar panels are regularly cleaned at optimal intervals, adapting to varying weather conditions and local environmental factors. Such consistent maintenance further guarantees prolonged efficiency and panel longevity.

Improved Aesthetics and Property Value

Regular commercial cleaning of your solar panels not only enhances their performance but also contributes to the overall aesthetics of your property.

Clean and well-maintained panels add to the visual appeal of your home or business, creating a positive impression on visitors and potential customers. Additionally, well-maintained solar panels can increase the resale value of your property, making it a more attractive investment for potential buyers.

How Often Should You Opt for Commercial Cleaning?

The frequency of cleaning largely depends on your location, the tilt of your panels, and the surrounding environment. In Ireland, considering the frequent rains and the amount of organic matter in the air, it is advisable to get your panels cleaned at least once every six months.

DIY Cleaning vs. Commercial Cleaning

While many homeowners in Ireland might be tempted to clean their solar panels themselves, there are some distinct advantages to opting for professional commercial cleaning.

Expertise and Equipment

Commercial cleaning services come equipped with specialised tools designed for solar panels. They also have the expertise to handle these delicate panels, ensuring that no damage occurs during the cleaning process.


Solar panels are often placed in locations that might be challenging and unsafe to reach. Professional cleaners have the necessary equipment and training to clean these panels safely, eliminating the risk of accidents.


Solar panels are a brilliant investment, not just for the environment but also for reducing electricity costs in the long run. However, their efficiency can only be maintained with regular cleaning and maintenance. For homeowners and businesses in Ireland, considering the unique climatic challenges, opting for commercial cleaning is the best way to ensure that your solar panels always perform at their peak.

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Frequently Asked Questions

Can rainwater clean solar panels effectively?

Rain does wash away some surface dirt, but it's not an effective cleaning solution. Minerals present in rainwater can leave behind residue, resulting in hard water spots which may diminish the efficiency of the panels over time.

How often should solar panels be cleaned in Ireland?

Considering the unique Irish climate with its frequent rainfalls and abundance of organic matter, it's best to opt for professional commercial cleaning at least once every six months to maintain optimal panel efficiency.

Does cleaning solar panels increase their lifespan?

Absolutely. Regular cleaning ensures that debris doesn't accumulate on the panels. This reduces wear and tear, preventing minor damages that could escalate over time, hence ensuring the panels last longer.

Can I clean my solar panels with regular soap and water?

While you might be tempted to use household products, it's essential to avoid regular soap. They can leave residues or cause damage. It's always best to use specialised cleaning solutions or, better yet, opt for commercial cleaning services.

Are there any risks in cleaning solar panels by myself?

Yes, cleaning solar panels on your own poses several risks. Beyond potential damage to the panels themselves, there's a significant personal injury risk, especially if the panels are placed in elevated or hard-to-reach areas. Professionals are equipped with the right tools and safety measures.

How much efficiency is lost due to dirty solar panels?

The efficiency loss can be significant. Even a thin layer of dirt or debris can decrease a panel's efficiency by up to 25%. Regular cleaning ensures the panels capture the maximum amount of sunlight, optimizing energy production.

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*FYI, parts of this blog post were drafted by artificial technlogy. But rest assured, it's been thoroughly researched, edited, reviewed and me & my team.
About Author
Raj Singh

A seasoned professional in the solar industry, Raj Singh is dedicated to illuminating Ireland with the power of the sun. His passion for renewable energy and commitment to sustainability shine through his work in the solar industry.