How To Clean Solar Panels From The Ground?

You may not need to do much to clean your panels depending on the degree of the debris. This is why we advise you to assess the panels first. Examine them to see how much trash, grime, and substance build-up has accumulated on the panels (are there any sticky substances, such as bird droppings?).

Then decide how you’ll clean the panels:

For Minimal Dust Build-Up: Use a Hose

If the messiness of your panel is primarily due to dust and grime build-up, you’ll probably only need a simple hose-down to clean it up. If your garden hose can reach your panels, that should suffice. Simply saturate them with water and you’re ready to go. You can set them out in the sun to dry.

Just make sure you don’t use high-pressure jets or a pressure washer to spray the panels. This could scrape or damage the panels, resulting in decreased performance and efficiency.

For More Extensive Mess: Scrub Them Down

If the debris on your panels is more than simply dust and dirt, and includes sticky stuff like bird droppings or sticky plant materials, you should scrub them thoroughly.

You don’t want to be too harsh on the panels again. Choose a gentle scrubber, squeegee, or brush to avoid scratching or damaging the panels. Also, choose a gentle soap that contains no chemicals that could hurt or degrade the panels.

After that, use these steps to clean the panels:

  • Fill a bucket halfway with warm water and a pinch of mild soap.
  • Using a hose or another low-pressure sprayer, rinse solar panels.
  • Scrub the panels gently with soapy water and the scrubber to remove any debris or buildup.
  • Remove any soapy water from the solar panels by thoroughly rinsing them.
  • Allow the panels to air dry.

And there you have it; it’s a rather simple procedure that requires little more than a scrubber capable of reaching across your panels. However, keep in mind that solar panels grow extremely hot on hot summer days. You could wish to tidy first thing in the morning or last thing at night.

Another Option: Have them Serviced

If you don’t feel like doing the work yourself, you can hire an expert to service the panels. If you bought solar panels straight from a manufacturer, visit the manufacturer’s website to see if there are any service providers in your area.

Many providers offer servicing plans in conjunction with the purchase of the panel. Regular maintenance and upkeep may be included in these programs (depending on the supplier). They could also include routine inspections to verify that the panels are operating as efficiently as possible.

We, on the other hand, would not choose this option if it were up to us. These services could end up being quite costly. You’re basically spending money in order to save money on your electricity bill afterwards. You’re obliterating your own cost-cutting efforts! And, because cleaning solar panels isn’t a particularly difficult process to begin with, we wouldn’t advocate hiring someone to do it in most cases.

Keep in mind that you’re simply comparing the cost of maintaining the panels to the cost of generating more energy with cleaner panels. These expenses will almost never be offset.

What is the best method for cleaning solar panels?

Your solar panels are usually flat, inclined, and on your rooftop if you have a domestic solar energy system installed. When was the last time you cleaned your roof? Most certainly not very often, if at all. What’s up with that? “Isn’t that what rain is for?” I hear you say. That reasoning also applies to solar panels.

You won’t have to clean your solar panels very often, if at all. After all, any filth that collects on them (such as dust or pollen) will be rinsed away the next time it rains. However, there are instances when cleaning your solar panels makes sense. If you have a lot of bird droppings on your panels, rain may not be able to wash them away easily, therefore cleaning them is a smart idea. You may also need to clean them from time to time if you live in a state that is prone to droughts or if the rain is only a light, misty rain.

Is it true that dirt and debris reduce the efficiency of your solar panels? And, if so, how much will it cost? In a nutshell, yes and no. And there isn’t much. Yes, dirt and debris can reduce the amount of sunlight that goes through to be converted into energy. However, the reduction in efficiency is minorperhaps 5% or less. And, with a normal 5kW solar system, this might be a $20 reduction in your monthly energy expenditure. Not on a monthly basis. And, even if we’re talking about drought-stricken places, when it does rain a few months down the road, everything will be washed away, and it might not be worth it to go to the trouble of cleaning it in the first place.

How to Clean Solar Panels

If you decide that your solar panels need cleaning, you have two options: hire a professional or do it yourself. Many solar firms will provide you with this service for a price, of course. They may include it as part of an annual maintenance package or recommend that you get it done on a regular basis when they come to install the equipment. The truth is that the amount you save on your energy bill does not exceed the money you must pay these providers to complete the work. Solar firms frequently demand a high fee for this cleaning, with little return on your energy expenditure.

On the other hand, if you choose to do it yourself, you’ll probably have everything you need at home. In most cases, all you’ll need is a hose and maybe some soap, and you’ll be ready to go. This might be useful in drought-prone places as well, because what you’re doing with the hose is essentially the same thing rain would do if there was more of it.

There are a few ways to tell if your solar panels need to be cleaned in the first place. The first is a visual inspection of the panels for trash, filth, and bird droppings, among other things. The other option is to employ a monitoring system to keep track of how well your solar panels are working and performing. This can notify you to any system maintenance requirements, whether mechanical, electrical, or cleanliness-related.

What Do You Use to Clean Solar Panels?

You can clean your residential solar panels with a range of items if you want to do it yourself. But first and foremost, let’s talk about the basics. Check with your solar installers and providers to see if they have any solar panel cleaning information, tips, or dos and don’ts for cleaning your system.

Cleaning your solar panels with a hose and a bucket of soapy water is the most effective method. In a similar way to how you would wash your automobile at home. Because you don’t want to scratch the panels, you should only use soapy water and a non-abrasive sponge to apply it. When cleaning your solar panels, keep in mind that you should avoid using any form of high-pressure water sprayer. The solar panels themselves may be damaged by a high-pressure attachment.

If you must use something other than water to remove bothersome bird droppings, make sure it is soft and bristle-free. Sponges are excellent for cleaning solar panels because they do not scratch them. If you want to use some soap on your sponge, use anything you’d use to clean your dishes with. Laundry detergents and other harsh chemicals may have a negative impact on your solar panels. Remember that in 99 percent of circumstances, plain water is the best option.

Keep in mind that when the sun shines directly on solar panels, they can become extremely hot. It’s preferable to clean the panels on a cold, gloomy day. Not just to avoid getting burned, but if you try to clean the solar panels when it’s extremely hot outside, the soapy water you use will evaporate fast, leaving a residue or smear on the panels that will reduce their efficacy.

Is It Worth It To Clean Your Solar Panels?

Experts are leaning toward “no” based on the research. Especially if you want to employ a professional firm to clean them instead of doing it yourself. The return on investment is simply insufficient to justify the effort. Let’s look at some statistics. Expect a 5 percent or less drop in output when your solar panels become dirty. That’s only when they’re filthy. In most regions, if the solar panels have dust or debris on them and their energy output is 5 percent lower than it is at other times, the next rain will wash away the debris and the solar panels will return to their peak efficiency. It will rain again, even if you live in a drought-prone location.

Furthermore, most solar panels are angled at such an angle that most buildup runs directly off the panel rather than adhering to the top. Even with tilted panels, there may be some little buildup on the lowest panel (due to runoff collecting at the bottom), but the reduction in output is so minor that it’s not worth worrying about.

Finally, climbing up a ladder, getting on your roof, and cleaning your solar panels yourself is a relatively tiny energy and cost tradeoff. This issue may start to hit home when you consider getting out there and carrying a hose up to the roof to clean them.

Maintenance and Upkeep

In general, you should let the rain clean your solar panels. Pay attention to your energy bills and usage month after month to keep track of your system’s performance. If your electric bill begins to fluctuate, it may be time to consider cleaning or other types of maintenance. If you suspect that swings in your energy cost are due to solar panel cleaning, wait for a good rain to see if the efficiency returns to normal. If that’s the case, you’re probably done. If the functionality is still broken, it’s likely that something electrical has to be fixed rather than just cleaned.

A visual check, a rainwater bath, and your staying on the ground (rather than stepping up a ladder) may be all the solar doctor needs to order when it comes to solar panel cleaning.

Is it possible to pressure wash solar panels?

Solar panels are a terrific sustainable energy source. There are numerous benefits to investing in a set of high-quality solar panels for your home, including low installation costs and ease of maintenance.

Solar panels are really simple to maintain. They just need to be cleaned a couple of times a year, with rainwater taking care of the most of the cleaning, so you won’t have to climb up on your roof to clean them.

There will be times, though, when you will need to clean your solar panels. Dirt and dust can quickly accumulate, reducing the efficiency of the panels, so you’ll need to roll up your sleeves and clean them.

It’s important to keep in mind that there are certain methods for cleaning solar panels. Using the incorrect cleaning approach can result in the panels being permanently damaged. So make sure you clean them properly every time!

Here are three things you shouldn’t do to clean your solar panels:

1. Make use of a high-pressure washer

Pressure washers are fantastic for cleaning the outside of your house, such as the roof and gutters, but they should never be used on solar panels. Yes, their tremendous reach and pressure make cleaning big parts of solar panels more easier, but there is a risk that the panels will be damaged.

Brushes with a hard bristle

Cleaning a solar panel using a brush and soapy water is one of the most effective methods. However, you must use the suitable brush, which should be a soft bristle brush, to avoid damaging the panels’ surface.

Hard bristle brushes, on the other hand, may cause surface damage, reducing efficiency or even preventing the panels from using energy. Even if you want to go lightly, never use a harsh bristle brush because it will almost certainly inflict permanent damage.

You can remove streaks with a soft sponge or cloth, or you can use a squeegee if necessary.

3. Cleaning fluids that are powerful

Because some of the dirt and grime on solar panels might be difficult to remove, it’s common to assume that stronger cleaning solvents will work better. Using cleaning products with powerful components, on the other hand, may harm the glass panels and diminish their efficiency dramatically.

Instead, for dishwashing, opt for liquid soap rather than anything with a high alcohol level.

Is it necessary to clean solar panels?

To generate electricity, your solar panels must be exposed to sunlight. Solar panel cleaning is normally not necessary unless you reside in an area where there is a lot of smog, dust, dirt, or sand blowing around. In most circumstances, a little rain every now and again will suffice to keep your solar panels clean and free of debris that could reduce production.

Is it possible to clean solar panels with vinegar?

Consider using vinegar to clean your solar panels in a natural and sustainable way.

We’ve all heard about how vinegar may be used as an all-purpose cleaner. Plus, it’s easy to find in your pantry. Though it may appear that vinegar is incapable of doing the job, it is an excellent element for keeping metal and crystal artifacts as clean as new.

You’ll need to dilute it a little to make a cleaning solution. Combine 1/4 cup vinegar, two cups water, and half a teaspoon liquid detergent (or any non-abrasive soap) in a mixing bowl. Put that in a spray bottle and you’ve got yourself a solar panel cleaning solution. As simple as that!

The vinegar aids in the removal of harder stains that may be more difficult to remove from the panels.

Is it possible to clean solar panels with Simple Green?

Solar panel production can be reduced by up to 40% due to dust, bird droppings, debris, and wildfire ash.

But your panels are spotless since you clean them on a regular basis, right? Isn’t it true that you clean them once a year? You cleaned them when they were brand new?

If you’re anything like the majority of us, you’ve never cleaned your solar panels before.

On average, dirty panels can reduce power output by 30% or more. On a 7kW system, we’ve seen as much as a 47 percent boost in power production. This corresponds to around $500 in annual savings.

So, how do you maintain the cleanliness of your solar panels? It’s a simple procedure, but it’s not that simple. A ladder, a soft brush and squeegee, a telescoping pole, a cleanser like Simple Green, and a hose with nozzle are all necessary.

Simple Green is a consumer-friendly cleanser that is safe for the environment, non-oxic, and biodegradable.

So, here’s how you go about it. First and foremost, put your safety first. Secure your ladder to the ground and the roof. Wearing a safety harness is also recommended. To begin, clean your panels early in the morning or late in the evening to avoid the heat of midday. Cold water does not like hot glass. For that matter, neither do I. Remove any loose dirt or debris from your solar panels by rinsing them. Use a low-pressure washer instead of a high-pressure washer. They have the potential to do harm. All you need is a garden hose and a garden nozzle.

Immediately rinse off the panel with clean water, and squeegee the panel dry to avoid water spotting. Continue with the rest of the panels in your system.

Done. It’s a straightforward procedure, as I already stated. But it isn’t so simple and quick. Check to see if your ladder is properly secured. We strongly advise you to wear a safety harness. This, in and of itself, necessitates some setup and ability. Keep an eye out for slick, wet roof surfaces. Also, make sure you drag enough hose onto the roof so that the hose’s weight does not pull it off. It’s not fun to watch the hose wriggle away from you and onto the ground.

Is it necessary to clean solar panels on a regular basis?

  • Cleaning solar panels is made much easier using solar panel cleaning kits. A biodegradable soap, a wiper, and a small brush or brush with a longer handle are included in the set. In a bucket, combine the soap and water. The bottle comes with instructions. Start carefully wiping the solar panels with the brush that has been dipped in the bucket. To clean the panels, use simple water or a soft brush to remove any filth or dirt that has accumulated.
  • It’s never been easier to clean solar panels! When solar panels are damp or wet, any dirt or debris that has adhered to them can be readily wiped away.
  • If you clean your solar panels with an abrasive sponge or soap, you risk scratching the glass. Solar panels should be cleaned with a soft rag or biodegradable soap.
  • When cleaning solar panels, it’s crucial not to use harsh materials because they can harm them, and solar panels are expensive to replace.
  • If you clean frequently, you might be able to eliminate any dirt by simply running a hose along the panels. Solar panel maintenance calls are down.
  • Use a long-handled wiper to clean the panels while standing on the ground for your safety and the safety of others.
  • If you need to get on the roof, use caution since once you start cleaning, the roof gets slippery, and you could fall off if you don’t use safety ropes or a harness to keep you safe.
  • Always keep an eye out for dirt on the solar panels to ensure that it doesn’t accumulate, as clean panels absorb more sunlight.
  • Many people wonder if solar panels need to be cleaned, and the answer is yes. Depending on the sort of solar panel you have, you may need to clean it weekly or monthly. In terms of solar panel cleaning, your solar panel manufacturer should be able to guide you.

Is it okay to clean solar panels with a hose?

Solar panel washing involves a lot of water. After brushing away dry debris, most dirt on solar panels can be removed using a garden hose.

While it may be tempting to blast solar panels with as much water as possible to speed up the cleaning process, high-pressure cleaning is more likely to cause fine cracks in their surfaces. This will degrade the solar system’s efficiency and encourage future difficulties. It could also void current warranties if you don’t follow the manufacturer’s solar panel maintenance guidelines. Before cleaning solar panels, remove any hoses with high-pressure attachments.

Is squeegeeing solar panels permissible?

By preventing sunlight from penetrating the glass and stimulating the electrons beneath, dirty solar panels can limit power-generating output by 20% or more. If not washed away, ash falling from wildfires has been observed to impair electricity production by up to 50%.

One of our solar energy monitoring locations is located on a sandy road in Templeton, California. 744 kWh were generated by the filthy panels. The solar panels were cleaned, re-tested, and allowed to warm up again. The clean system was producing 910 kWh at the time. Just an hour ago, the clean panels were producing 21% more electricity than the unclean panels. At 22 cents per kWh, the clean system produces $37 more energy per month, or $440 per year, than the filthy system. Depending on how dirty the panels are to begin with, the results may vary. When compared to the savings, washing off marginally dirty panels is probably not worth the time and effort. Below is a comparison of the before and after panels.

Note: Consult the solar panel manufacturer for precise cleaning instructions, and follow those instructions.


  • A gentle brush and an extension pole are required. I like the $15.49 one I found at Camping World. On one side, there’s a glass scrubber, and on the other, there’s a squeegee. The pole can be extended from 48 to 84 feet.
  • a hose that will reach your panels
  • Dawn dishwashing liquid, for example, is a non-abrasive, mild soap.

Clean your system while the weather is cool, either early in the morning or late in the evening. When it’s 100 degrees outside, the glass will not appreciate being sprayed with cold water.