Enhance Your Solar Panel Performance: Why Steam Cleaning is a Game Changer

fact check policy
Updated on:

June 5, 2023

Steam Cleaning Solar Panels: Tips for Maximum Performance

Looking to optimize the performance of and clean your solar panels? Look no further! In this comprehensive guide, we'll delve into the world of steam cleaning for solar panels, providing you with step-by-step instructions and invaluable tips. Discover the transformative power of steam as we explore the best techniques and tools for cleaning your solar panels. Get ready to harness the full potential of clean panels and effortlessly boost your energy generation.

Solar panels have become an increasingly popular choice for homeowners seeking clean and renewable energy solutions. To maintain their optimal performance and energy output, regular cleaning and maintenance are essential. In this comprehensive guide, we will explore the benefits of using a steam cleaner for solar panel cleaning. We will address common questions, discuss the importance of turning off solar panels before cleaning, and recommend the best methods and cleaning agents for achieving sparkling clean and efficient solar panels. Additionally, we will delve into the impact of location on solar and panel efficiency and cleaning, the limitations of pressure washers, and the significance of seeking professional help for comprehensive maintenance.

Key Takeaways:

  • Steam cleaning offers efficient and thorough removal of dust, dirt, and contaminants from solar panels.
  • Using a steam cleaner is environmentally friendly and avoids the use of harsh chemicals.
  • Recommended steam cleaners for solar panel cleaning include the Fortador PRO steamer, Karcher SC3 EasyFix,  Dupray Neat steam cleaner.

Table of Contents (Show)

Table of Contents (Hide)

dirty solar panel

Solar Panel Cleaning: Enhancing Performance and Longevity

Solar panels play a vital role in harnessing solar energy to power residential properties. However, over time, these panels can accumulate dust, dirt, leaves, bird droppings, and other debris, which can hinder their performance and energy production. Regular cleaning is crucial to maintain the efficiency and longevity of solar panels, ensuring they operate at their optimal capacity.

Temperature Compatibility and Safety

One of the key advantages of using a steam cleaner for solar panel cleaning is the compatibility of temperatures. The high heat generated by steam cleaners aligns with the operating temperature range of solar panels, ensuring that there is no temperature shock during the cleaning process. This eliminates the risk of thermal stress and damage to the panels.

It is worth noting that solar panels are designed to withstand temperature fluctuations, including the heat generated by steam cleaning. The panels are engineered to handle the high temperatures they experience during normal operation and can tolerate the additional heat from steam cleaning without adverse effects on solar output.

solar blockers

Impact of Solar Blockers

  1. Dust: Dust particles settle on the surface of solar panels, reducing the amount of sunlight that reaches the photovoltaic cells. This leads to a decrease in energy production and efficiency.
  2. Leaves: Falling leaves from nearby trees can create shadows or cover the panels, significantly impacting energy output. Additionally, decomposing leaves can release moisture and organic matter, creating an ideal environment for algae growth.
  3. Water: Rainwater can leave mineral deposits on the panel surface as it evaporates, forming a layer that reduces light penetration. Additionally, water droplets can act as magnifying lenses, intensifying sunlight and causing hot spots that can damage the panels.
  4. Bird droppings: Bird droppings contain corrosive substances that can eat away at the protective coatings on solar panels. They also create a physical barrier that reduces light transmission and hampers energy production.

Cleaning Solar Panels with a Steam Cleaner

Cleaning solar panels with a steam cleaner is a straightforward process that can be done in a few simple steps:

1. Preparation

  • Ensure the solar panels are cool and turned off before cleaning.
  • Use a soft brush attachment on the steam cleaner to gently remove loose debris and dust from the panels.

2. Steam Cleaner Setup

  • Fill the steam cleaner's tank with distilled water, following the manufacturer's instructions.
  • Allow the steam cleaner to heat up to the recommended temperature.

3. Cleaning Process

  • Hold the steam cleaner nozzle a few inches away from the panel's surface.
  • Move the nozzle in a sweeping motion across the panels, allowing the high-pressure steam to dissolve and remove dirt, grime, and other contaminants.
  • Pay extra attention to areas with stubborn stains or bird droppings.

Three Recommended Steam Cleaners for Solar Panel Cleaning

fortador pro solar panel steam cleaner

Fortador PRO Steamer

The Fortador PRO steamer is a professional-grade cleaner known for its power and versatility. It offers adjustable temperature settings and durable construction, making it ideal for safely cleaning solar panels. The Fortador Pro ensures excellent performance and reliability.

Karcher SC3 EasyFix

Karcher SC3 EasyFix

The Karcher SC3 EasyFix is another popular steam cleaner with robust cleaning power. It features a large water tank capacity, adjustable steam intensity, and various attachments suitable for different cleaning tasks, including solar panels.

Dupray Neat Steam Cleaner

Dupray Neat Steam Cleaner

The Dupray Neat steam cleaner is a compact and lightweight option that delivers powerful steam for effective cleaning. It offers quick heat-up time and a long-lasting steam flow, making it suitable for solar panel maintenance.

Frequency of Cleaning

The frequency of cleaning depends on factors like location, climate, and debris accumulation. Typically, it is recommended to clean solar panels every 6-12 months or as needed. However, areas with high dust, pollen, or bird droppings may require more frequent cleaning. Regular inspection helps determine the appropriate cleaning schedule.

Benefits of Steam Cleaning

  1. Efficient Cleaning: Steam cleaning provides thorough and efficient removal of dust, leaves, water spots, and bird droppings. The high-pressure steam dissolves and lifts these particles, restoring the panel's surface to its optimal condition.
  2. Environmentally Friendly: Steam cleaning eliminates the need for chemical cleaning agents that may harm the environment. By using only distilled water, steam cleaners offer a green and sustainable solution for solar panel maintenance.
  3. Non-Abrasive: Unlike scrub brushes or abrasive cleaning methods, steam cleaning is non-abrasive and gentle on the panel's surface. This ensures that the protective coatings and delicate photovoltaic cells remain intact, preventing any damage that could reduce energy output.
  4. Time and Cost Savings: Steam cleaning is a time-efficient method that requires minimal setup and preparation. It eliminates the need for extensive scrubbing or rinsing, allowing homeowners to clean their solar panels quickly and effectively.

Potential Risks of Steam Cleaning

While steam cleaning is generally a safe and effective method, there are a few factors to consider

  1. Possible Voiding Warranties, Steam cleaning solar panels may void warranties provided by manufacturers, potentially leaving you responsible for any damages or repairs.
  2. Damage to Specific Panel Types: Some panel types may be more susceptible to damage from high-pressure steam, leading to cracks, delamination, or reduced performance.
  3. Thermal Stress: Improper use of steam cleaners, such as exposing panels to extreme temperature changes, can cause thermal stress and potentially damage the solar panels.

Location's Effect on Solar Panel Cleaning

The location of your solar panels can have a significant impact on their cleanliness. Factors such as proximity to trees, bird activity, and local climate can affect the frequency and intensity of cleaning required. Areas with high levels of dust, pollen, or bird droppings may necessitate more frequent cleaning to maintain optimal performance. Similarly, regions with heavy rainfall or windy conditions may experience a higher accumulation of debris on the panels, requiring regular cleaning to ensure maximum efficiency.

Safe Cleaning Practices for Solar Panels

Use protective gear, gloves and eyewear while operating the steam cleaner to protect yourself from steam and potential splashes.

Avoid directing steam towards yourself or others. Be cautious when using the steam cleaner to prevent steam from coming into contact with your body or others nearby.

Be mindful of electrical components. Pay attention to the location of electrical components and connections on the solar panel system to avoid damaging them during cleaning.

Cleaning Chemicals for Solar Panels

When cleaning solar panels, it is important to use safe and non-abrasive cleaning chemicals. Mild detergents specifically formulated for solar panel cleaning can be used to remove stubborn stains or residue. However, it is crucial to avoid chemicals that leave behind a film or residue, as this can impact the solar panel's performance further.

Safe cleaning chemicals include:

  • Isopropyl alcohol: Effective in removing grease, oil, and grime.
  • Non-abrasive glass cleaners: Gentle and streak-free cleaning solutions.
  • Distilled vinegar: Natural and effective for removing mineral deposits.

Unsafe cleaning chemicals to avoid include:

  • Ammonia-based cleaners: Can cause damage to the panels and coatings.
  • Abrasive cleaners or scrub brushes: Can scratch and build up the panel's surface and reduce efficiency.


Regular steam cleaning is a highly effective and environmentally friendly method to maintain the performance and longevity of solar panels. By using a steam cleaner with distilled water, homeowners can efficiently remove dirt, grime, and contaminants without causing damage. The high-pressure steam dissolves stubborn stains and eliminates the need for harsh chemicals or abrasive cleaning methods. Additionally, turning off the solar panels before cleaning and following safety precautions ensures a safe and successful cleaning process. With steam cleaning, homeowners can optimize energy generation, save time and costs, and enjoy the benefits of clean and efficient solar panels.

faq of solar panel cleaning


What is the Best Way to Clean Solar Panels?

When it comes to cleaning solar panels, using a steam cleaner has proven to be highly effective. Steam cleaning offers several advantages, such as its ability to dissolve and remove stubborn dirt, grime, and contaminants. The high-temperature steam not only provides a thorough clean but also helps eliminate any potential bacteria or microorganisms on the solar panel system itself's surface.

Is Solar Panel Cleaning Worth It?

Absolutely! Solar panel cleaning is a worthwhile investment for homeowners with a residential solar energy system. Clean panels allow for maximum sunlight absorption, resulting in increased energy, solar power production, and reduced energy costs. By regularly cleaning your solar panels, you can ensure optimal performance and maximize the return on your investment.

Do You Need to Turn Off Solar Panels Before Cleaning?

Yes, it is crucial to turn off your solar panels before initiating the cleaning process. By shutting down the solar system first, you eliminate the risk of electrical shock and protect yourself from potential accidents. Moreover, turning off the panels allows them to cool down, reducing the possibility of thermal stress or damage during cleaning.

What is the Best Thing to Clean Solar Panels With?

When it comes to cleaning solar panels, it is best to use distilled water and a soft brush attachment on your steam cleaner. Distilled water helps prevent mineral deposits on the often dirty solar panels, ensuring a streak-free clean. The soft brush attachment allows for gentle cleaning without causing any scratches or damage to the panel's surface.

Can I Use Dawn Dish Soap to Clean My Solar Panels?

While Dawn dish soap is effective for many cleaning tasks, it is not recommended for solar panel cleaning. Dish soaps, including Dawn, can leave behind a residue that reduces the panels' efficiency and hampers their performance. It is best to stick to distilled water and steam cleaning methods for optimal results.

What is the Best and Easiest Way to Clean Solar Panels?

The best and easiest way to clean solar panels is by using a steam cleaner. Steam cleaning offers a quick and efficient method to eliminate dirt, grime, and other contaminants from the panel's surface. The high-temperature steam dissolves the debris, leaving your solar panels clean, and ready to absorb maximum sunlight.

Can You Use a Pressure Washer for Solar Panel Cleaning?

Using a pressure washer to clean solar panels is not recommended. While pressure washers are effective for many outdoor cleaning tasks, they can cause damage to the delicate solar cells and their protective coatings. The high-pressure water stream can penetrate the panels' seals and lead to water ingress, potentially resulting in electrical hazards or damage to the system. It is best to avoid pressure washers and opt for safer professional cleaning methods like steam cleaning.

About the Authors

Kristina Tretyakova
Distinguished as a South Florida Top-10 student in 2021. Studying Marketing and Business Administration at FIU. Proficient in daily operations and skilled in cleaning, auto detailing and copywriting.
Kris Traczynski
As the visionary behind Fortador Steamers, I've revolutionized the cleaning landscape across both the USA and Europe. With a profound understanding of the cleaning industry, I've fostered expertise that sets new standards. My journey is one of innovation, commitment, and a relentless pursuit of exce

Learn More

Dry steam technology | How to choose best dry steamer for your needs


Comparing Fortador and Optima: The Battle of Industrial Steam Cleaners


Maintaining a Healthy Workspace in Manufacturing Facilities: The Power of Clean


Contact Us
Thank you! Your submission has been received!
This is some text inside of a div block.
Oops! Something went wrong while submitting the form.