Let’s be real—solar panels are one of the best investments for Mildura homes, where the sun’s almost always shining. But here’s the catch: they’re not self-cleaning. Dust, dirt, bird droppings, and even Mildura’s infamous dry winds can coat your panels over time, blocking sunlight and reducing efficiency.

If you’re wondering when to give them a good scrub to keep them running at peak performance, you’re in the right place. In this blog, I’ll break down the best times to clean your solar panels, share actionable tips, and explain why keeping them clean isn’t just a chore—it’s a smart way to save money on your energy bills.

Why Do Solar Panels Need Cleaning in Mildura?

Mildura’s climate is perfect for solar panels, but it comes with challenges. The dry winds, dust storms, and occasional rainstorms mean your panels won’t stay clean for long. A layer of dirt might seem harmless, but it can block sunlight and cause a noticeable drop in efficiency—sometimes up to 25%!

Here’s why regular cleaning is crucial:

• Boost Energy Efficiency: Dirty panels produce less energy, meaning higher electricity bills.

• Extend Panel Lifespan: Dirt and debris can cause wear over time, leading to costly repairs or replacements.

• Protect Your Investment: Clean panels give you the maximum return on your solar investment.

For a deeper dive into the impact of panel damage, check out our blog: How to Spot Damage on Your Solar Panels.

The Best Times to Clean Solar Panels in Mildura

1. After Dust Storms

Mildura’s semi-arid climate means dust storms aren’t uncommon. These storms can leave a thick layer of dirt on your panels, blocking sunlight and reducing energy output.

When to Clean:

• As soon as possible after the storm to prevent dirt from baking onto the panels in the sun.

• Use gentle cleaning methods to avoid scratching the surface.

Mike’s Tip: Don’t wait for rain to “clean” your panels. Rain often leaves streaks and mineral deposits behind, making things worse.

2. Before Summer Hits

Summer is when your panels will work the hardest, as Mildura’s long, sunny days generate maximum solar energy. Dirty panels in summer are like running your air conditioner with the windows open—you’re wasting potential energy.

When to Clean:

• Late spring is ideal, giving you clean panels just in time for peak sunlight.

Mike’s Tip: Clean in the early morning or late afternoon when the panels are cool. Cleaning during the heat of the day can cause water to evaporate too quickly, leaving streaks.

3. After Rainy Seasons

While Mildura isn’t known for heavy rainfall, when it does rain, it often leaves a film of dust and minerals on your panels. Rainwater can carry particles that stick to the panel surface, reducing efficiency.

When to Clean:

• A week or so after the rain, once the panels have dried. This allows you to remove any streaks or debris left behind.

Mike’s Tip: Use demineralised water for cleaning if you’re doing it yourself—it prevents water spots.

4. Twice a Year as a General Rule

If you’re not experiencing heavy dust storms or rain, cleaning your panels every six months is a good practice. This keeps them efficient year-round and prevents any long-term buildup.

When to Clean:

• Set reminders for spring and autumn to align with seasonal changes.

Mike’s Tip: A professional cleaning service can do the job more thoroughly and safely than a DIY approach.

How to Clean Solar Panels Properly

Cleaning solar panels doesn’t have to be complicated, but it does need to be done correctly to avoid damage. Here’s how:

DIY Solar Panel Cleaning

1. Turn Off Your Solar System: Safety first—always turn off your system before starting.

2. Use Soft Tools: A sponge or soft brush and a bucket of soapy water work wonders. Avoid abrasive materials that can scratch the surface.

3. Rinse with Clean Water: A hose with a gentle spray attachment will wash away dirt and soap.

4. Dry Naturally: Let the panels air-dry or use a microfiber cloth for a streak-free finish.

What to Avoid:

• Pressure washers: They can damage the panels or their mounting.

• Harsh chemicals: These can degrade the panel’s protective coating.

Why Choose Professional Cleaning?

Climbing onto your roof and cleaning panels can be risky and time-consuming. A professional cleaning service ensures:

• Thorough cleaning without the risk of damaging your panels.

• Safety for you—no ladders or awkward roof maneuvers.

• A stress-free experience with noticeable results.

Ready to let the pros handle it? Contact us today to book your solar panel cleaning service.

The Mildura Difference: Local Factors to Consider

Mildura’s unique climate makes solar panel cleaning more important than in some other regions. Here’s why:

• Dust Deposits: Regular winds carry fine dust that quickly coats panels.

• High UV Exposure: Dirt can cause uneven heating (hot spots), which may damage your panels over time.

• Seasonal Pollen: In spring, pollen from local plants can stick to panels, reducing their efficiency.

Mike’s Tip: Monitor your energy output through your solar inverter. If you notice a drop, it could be time for a clean.

FAQs About When to Clean Solar Panels in Mildura

1. How often should I clean my solar panels in Mildura?

Twice a year is a good starting point, but you may need more frequent cleaning after dust storms or during pollen season.

2. Can I wait for rain to clean my solar panels?

Rain can wash off loose dirt, but it often leaves streaks and deposits that require proper cleaning.

3. Is DIY cleaning safe?

DIY cleaning is safe if done correctly, but climbing on roofs can be risky. Professionals have the tools and experience to do it safely and thoroughly.

4. How much does professional solar panel cleaning cost?

Costs vary based on the size of your system and the condition of your panels. Contact us for a free quote!

5. Does cleaning solar panels really make a difference?

Absolutely. Clean panels can improve efficiency by up to 25%, which translates to lower energy bills and better performance.

External Resources for Solar Panel Maintenance

For more information on keeping your solar panels in top shape, check out these resources:

• How Often Should Solar Panels Be Cleaned?

• Maximising Solar Energy Efficiency

Keep Your Solar Panels Sparkling

Cleaning your solar panels might not be the most glamorous task, but it’s essential for getting the most out of your investment. Whether it’s after a dust storm, before summer, or just part of your regular maintenance routine, keeping your panels clean will ensure they’re always working at their best.

Need a hand? Book a professional solar panel cleaning service with us today. We’ll make sure your panels are spotless, safe, and ready to soak up the Mildura sun!