RV Solar Panels: Which Type of Solar Panels are Best?

Last updated on July 23, 2025

Choosing the right RV solar panels is an important part of building an off-grid RV solar setup. Ideally, you want to buy the most efficient, durable panels available, but with the varied sizes, different panel types, and dozens of manufacturers to choose from, determining which solar panel is the best can be intimidating.

Rather than going at it alone, we explain the different types of solar panels to choose from and discuss the pros and cons of each to help you determine which RV solar panel type is best for you.

Different Types of RV Solar Panels

When it comes to choosing your RV solar panels, you have three options to consider:

• Cell type: monocrystalline or polycrystalline
• Panel construction: rigid or flexible
• Location of panel: portable or fixed

Solar cell types

The cell type of RV solar panels is one of the biggest decisions you will make. The cell type determines the charging efficiency, cost, and longevity or lifespan of the panels.

Monocrystalline solar panels

Monocrystalline solar panels are the most popular choice for RV solar panels. That’s because monocrystalline panels are single cells, making them more efficient and durable than other panel cell types. Its superior quality does mean it’s the more expensive option of the two. However, the higher cost is almost always worth it because of its performance.

• Usually darker (dark blue or black) and all one color
• Panels are made up of individual cells that are rounded on the edges

PROS:

• More efficient than polycrystalline panels (will produce more watts aka more power)
• Last the longest

CONS:

• Most expensive option

Polycrystalline solar panels

Polycrystalline solar panels are the more affordable option of the two. These panels are made up of several cells, which can lead to less efficient charging.

• Usually lighter in color
• Panels are made up of several cells that are rectangular or square.

PROS:

• Cheapest option

CONS:

• Less efficient than monocrystalline panels (produces less wattage per surface area)
• Typically larger in size than monocrystalline
• Don’t last quite as long

If your budget allows, monocrystalline is the best option for cell type, simply because you get the most efficiency with the least amount of space and will last the longest. This is especially true thanks to the advancements in solar panel technology in recent years. There are many affordable options for monocrystalline solar panels today.

Solar panel construction

The next decision you need to make is the panel construction. The construction of the panel determines the weight, durability, and surface area used by your solar panels.

Flexible panels

Flexible panels are by far the lightest option. They also have flexibility (hence the name) in their mounting position. If you have a weird-shaped roof, flexible panels may be the only option for you. However, we do not recommend getting flexible panels.

We had them on two of our RVs and both failed shortly after installation. One of our sets of solar panels caught on fire!

Play

PROS:

• Lightweight and flexible
• Low profile (not easily seen)
• No drilling is required for the installation

CONS:

• Less durable because cells are sealed under a protective plastic layer
• More prone to scratches but less likely to crack from a large impact
• More expensive than rigid glass panels
• Cannot tilt panels
• Prone to failure (and can even be hazardous)

Rigid glass panels

Rigid glass panels are protected by a layer of tempered glass. This means they are more durable and less susceptible to failure from objects hitting the panels. They are heavier than flexible panels, but they come with loads of other benefits, I believe make them the ideal option for an RV.

They are affordable, can be tilted for maximum solar exposure, and can be removed or replaced more easily than flexible panels. Those factors, combined with rigid panels’ durability, make them the best choice for RV solar panels.

PROS:

• More durable because cells are mounted under tempered glass
• More resistant to scratches and severe weather like snow and hail (but can crack from a large impact)
• Typically cheaper than flexible panels
• Can tilt to get maximum sun exposure

CONS:

• Typically mounted to a metal frame
• Thickest and heaviest option
• Installation requires drilling

Both panel construction types come in a wide range of wattage and are offered in both monocrystalline and polycrystalline cell types. Flexible panels are good for those with limited weight capacity, who have a curved RV roof, or who want to avoid drilling holes into the RV roof.

Location of panels

The last decision you need to make when choosing RV solar panels is the location of the panels. You can have your panels fixed, which means they are permanently installed on your roof. Or they can be portable. In other words, they can be moved as needed for maximum sun exposure.

Portable solar panels

Portable solar panels are not permanently installed on your RV. Rather, they can be moved to different locations. Most new RVs will have an outlet for plugging in a portable solar panel to your RV. However, if your RV is older, you’ll likely need to install an outlet yourself or plug the portable panel into your batteries directly.

Portable panels, like this 200-watt Renogy one, are usually fairly lightweight. They can be installed in just a few minutes and the ease of portability allows you to park in the shade while still getting solar exposure. The biggest drawback is the limitation of wattage. Most portable panels come in 100 to 200-watt ranges. This means you can’t have a large system to charge your batteries like you could on your roof.

It also requires you to set up the panel every time you park somewhere. When your panels are on your roof, you are receiving a charge anytime it has solar exposure.

• Good for weekend warriors, or those who boondock for short periods and want to “top off” their batteries.
• Nice option to supplement a fixed solar panel setup.
• Can be moved to benefit from maximum sun exposure (meaning you can keep your RV in the shade and move the panel to the sun)/
• Has its own charge controller.

Which RV solar panel is the best?

Determining which RV solar panels are best for you really comes down to your RV design, space, budget, and needs. Consider how much roof surface area is available for solar panels, if you have weight limitations, the size of your battery bank, and overall energy needs.

Once you have an idea of what solar panels are best for you, it’s time to choose your solar charge control to handle the energy input from the panels to your RV. After our failed flexible panel fiasco, we’ve decided rigid panels permanently mounted are the best fit for us.

On our current RV, we have 400 watts of rigid Renogy solar panels permanently mounted on the roof. We also have a 2,000-watt AIMS inverter, a Renogy 60-amp MPPT charge controller, and 480 usable amp hours of battery power.

Choosing the right RV solar panels can feel like an overwhelming experience when you’re first getting started. But as you can see, it’s not as hard as you may think. It ultimately comes down to your budget and needs.