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How Much Does It Cost To Install Solar Panels On An RV? (Find Out Here). Rv solar installation cost

How Much Does It Cost To Install Solar Panels On An RV? (Find Out Here). Rv solar installation cost

    How Much Does It Cost To Install Solar Panels On An RV? (Find Out Here)

    Camping in places where you cannot get electricity from a grid is a common adventure. Solar power installation on RVs is becoming more and more popular among campers. This power source only needs sunlight to charge RV batteries and power appliances.

    Installing solar panels on an RV can cost about 400 to 1000 or even more. The bigger your RV and the frequent you use it, the more you will spend on installation. There are RV solar panel kits available on the market so you can find one that will suit your RV.

    You cannot simply set a budget you want to spend on solar installation. The reason is that factors determine how much it costs to install solar panels on an RV.

    Alternative Energy Options is an Amazon Associate. As such, we earn a small commission with reader purchases. We also maintain business relationships with other vendors (full statement.)

    In this article, we will discuss the factors that affect the cost of solar power system installation on an RV and how much an RV solar power kit can cost.

    Top Three Factors To Consider When Installing Solar Panels On An RV

    The Size Of Your RV

    The size of your motorhome will impact the installation of solar panels. RV campers have four sizes divided by their classes:

    The larger your camper is, the more appliances you can put inside it. And if you have many appliances inside your RV, you need more solar energy to power them. Fortunately, you can install more solar panels on the roof of a large motorhome.

    Your RV’s Battery Capacity

    The size of your RV’s battery bank is essential as it tells how long you can stay in a camp. If you often go off-grid camping in areas far away from where there are electric hookups, you will need a large battery bank to support your camping needs. This large battery bank will take a long period to charge up.

    So, if you are planning to power your RV using solar energy alone and you have a large RV battery, say 12 volts and 20 amps in size, you need a 300-watt solar panel or more to charge it. You can also install 3 x 100-watt solar panels to achieve the wattage required by the RV battery.

    If you are not sure about the wattage of your battery bank, you can get it by simply looking for its voltage and ampere. You can find this information written somewhere on the battery. Then, multiply the voltage by the ampere, and the resulting number will be your RV battery’s wattage.

    Once you have the wattage of your RV battery, you will be able to figure out how many solar panels it will take to charge it.

    The Amount Of Electricity Consumed By Your RV Appliances

    While your RV’s battery bank will provide your appliances with the electricity, they need to work when no electric hookups are available. However, it is also essential to know the amount of electricity your RV appliances consume. This way, you can ensure that your battery and solar panels provide enough electricity for the vital appliances you need when camping.

    You can find out your RV power usage by installing a battery monitor. We recommend the Renogy 500A Battery Monitor.

    Renogy 500A Battery Monitor Features

    It is compatible with all RV batteries, offering an accurate real-time current and voltage draw measurement. The transparent shunt holder makes the device easy to install. At the same time, the 20 ft. cable lets you monitor the battery at a far distance.

    over, you can also estimate your motorhome’s RV power consumption manually. However, it would take a lot of math, so using a battery monitor is better and more accurate. (source)

    Components Of An RV Solar Panel System

    Equipping your RV with solar energy is not as simple as buying and attaching a few solar panels to the camper’s roof. Solar power systems for motorhomes have several components that ensure their safety and efficacy in providing the electricity you need.

    That said, the solar power system components you will install on your motorhome also significantly affect how much it costs to install solar panels on an RV.

    Solar Panels

    • Rigid – the heaviest, most durable, and most efficient type of solar panel.
    • Portable – you can place this type of solar panel anywhere on and off your RV, allowing it to capture sunlight even when you park your motorhome in a shaded area.
    • Flexible – lightweight and ideal for a motorhome with a molded roof. (source)
    much, does, cost, install

    A rigid solar panel can generate up to 300 watts of solar energy. On the other hand, portable and flexible solar panels have a maximum wattage of 150.

    If you are using a large battery bank for your RV, you can either install one 300-watt solar panel or two to three 150-watt of flexible or portable types.


    The majority of motorhomes utilize two battery banks. One of the batteries is for starting the engine, while the other is for running the DC-powered appliances. Both batteries usually have a voltage of 12 and 20 amperes, which means they have a wattage of 240.

    However, you need more than 240 watts of solar panels to ensure that you will not overload your system. You need enough solar panels to make 300 watts or more electricity.

    Motorhomes that rely on grid hookups have an inverter that provides 120 volts of electricity to power appliances. On the other hand, modern RVs utilize lithium iron phosphate batteries, which you can charge using solar energy. You can also charge the engine alternator of the RV via solar energy using a DC/DC charger.

    These batteries will charge more rapidly via solar energy. They can also power your appliances for longer, making them an exceptional choice for off-grid use.

    AC/DC Inverter

    RVs usually come with inverters that convert the solar panels’ direct current (DC) electricity into alternating (AC) electricity for your appliances need to run. For this reason, you may no longer purchase a new inverter that you can connect to your solar power system.

    But suppose you are planning to rely solely on solar energy to power your camper. In that case, it is ideal for switching to a high-quality inverter. Although high-quality inverters are expensive, they are more reliable and durable. So, you can ensure that your solar power system consistently produces and converts the electricity you need to power your electronics.

    A high-quality inverter ensures that your battery bank and appliances receive the correct type of electricity, thus preventing accidents like short circuits.

    Charge Controller

    A charge controller is a device that prevents your RV’s battery bank from receiving too much electricity. It regulates the flow of electricity by matching the solar panels’ output voltage to the voltage needed by the battery. As a result, your battery will not overcharge, thus preventing damage from occurring.

    When your RV’s battery bank has a low charge, the solar charge controller will supply a full flow of current from the solar panels. Once the battery reaches its maximum charge level, the solar charge controller will provide a lower electricity voltage known as the “trickle charge.” This way, the battery will remain fully charged, yet the flow of electricity will not be enough to overcharge it.

    over, there are two types of solar charge controllers:

    Pulse Width Modulated Charge Controller (PWM)

    It provides better control of the electrical flow from the solar panels to the batteries. PWM is also budget-friendly and provides better trickle charging capabilities. This type of charge controller is ideal for RVs used occasionally.

    Maximum Power Point Tracking Charge Controller (MPPT)

    expensive but more beneficial and efficient than PWM. An MPPT charge controller gives motorhome owners more control and expandability towards their solar power system.

    A PWM charge controller is ideal if you have a small, entry-level camper. On the other hand, an MPPT is suitable for large motorhomes with many appliances that the solar power system needs to run. (source)

    Transfer Switch

    This solar power system component allows you to switch the power source from the battery to shore power. A transfer switch is essential in a campground where grid hookups are available.

    Additionally, a transfer switch provides safety and convenience as you will no longer have to switch power sources manually. Once you connect the transfer switch to an AC power source other than what your solar panels produce, it will choose the appropriate power source based on where you want it to connect. For instance, you can prompt the transfer switch to power your refrigerator while driving. This way, you can turn the propane source on the road without cutting the power off your fridge. (source)

    How Much Does RV Solar Power Installation Cost?

    With all the factors and components mentioned above, it is safe to say that the cost of solar power system installation on an RV will depend on one RV to another. If you are an occasional RV camper, you do not have to spend much installing solar panels. Meanwhile, part-time and full-time RV campers must invest in a high-quality and more powerful solar power system.

    Fortunately, you can purchase RV solar kits depending on your RV’s electricity requirements.

    Solar Panel Installation Kits

    For Small Motorhomes

    If you own a small motorhome, a budget-friendly solar kit like the Renogy 200 Watts Monocrystalline RV Solar Panel Kit is a good choice from Amazon. You can also order directly from Renogy.

    • Two 100-watt 12 volts Monocrystalline solar panels
    • 30 ft. 10 AWG solar adaptor kit
    • 30 amps PWM charge controller
    • 16 ft. 10 AWG tray cable
    • Branch connectors
    • Cable entry housing

    Motorhomes already have battery banks and inverters, so you may opt to no longer purchase them. But a lead acid battery is ideal if you want to replace your batteries. This battery charges quickly, allowing you to power your electronics while camping off-grid.

    For Large and Frequently Used Motorhomes

    If you have a large RV or frequently camp off the grid, you need an RV solar installation kit with a high wattage and a few additional components. One ideal choice is the Renogy 400 Watts 12 Volts Monocrystalline Solar RV Kit. This solar installation kit includes:

    • four 100-watt 12 volts Monocrystalline Solar Panels
    • 16 ft. 1 AWG tray cable
    • 30 ft. 10 AW MC4 adaptor kit
    • three branch connectors
    • cable entry housing

    Off-Grid Camping

    For campers often camping off-grid, it is ideal to use high-quality batteries that can handle the amount of energy produced by solar panels. We recommend that you install lead lithium batteries as they can store more solar power. You can also discharge and keep them for an extended period without acquiring damage.

    A good battery for a solar-powered RV will cost approximately 200.

    over, you will also need a high-quality RV inverter, especially if you want to camp off-grid for an extended period. This way, you can ensure that your inverter efficiently converts DC to AC electricity. A high-quality inverter will allow you to run appliances without a grid electricity source.

    It is also ideal to use an RV battery monitor. This device lets you see your battery bank’s remaining capacity in real-time. This same kit can be source)

    Calculating The Amount Of Electricity Needed To Charge Your RV Battery

    Knowing how much power your batteries need to charge up is essential. You cannot install too many solar panels when you do not have enough batteries to store the electricity they produce. You also cannot have too few solar panels as they will not be able to charge the batteries to their total capacity.

    Most of the time, the capacity of your RV batteries will only be a few watts higher than the wattage consumed by your appliances. You can get the wattage of your RV’s batteries by following the calculation of the appliances’ daily power consumption. So, if your appliances consume 1200 watts of electricity per day, your battery needs to receive 1200 watts of solar energy from the solar panels.

    Assuming you plan to install 320-watt solar panels, you need four solar panels to provide the electricity your batteries, and RV appliances need.

    How Do You Install Solar Panels On An RV?

    Now that you understand the cost of installing a solar power system on your RV and how to get the number of solar panels you need, the next thing you need to learn is the actual solar power system installation. However, installing solar panels on your own is not ideal if you do not know enough about RVs and solar power systems. But if you think you can do the installation process by yourself, below is a guide to help you do the job:

    Find An Ideal Location For Your Solar Panels

    The first step to installing a solar power system in your RV is to find the solar panels’ mounting location. RV owners who utilize solar energy usually mount their solar panels to the RV’s roof. However, the mounting location may vary depending on the type of solar panels you use.

    much, does, cost, install

    If you are using rigid solar panels, the ideal mounting location is the roof of your camper. You will use screws to secure the panels in place. Meanwhile, you can also place your flexible solar panels on the roof of your motorhome. The only difference from rigid solar panels is that you can install them using screws or adhesive mounts.

    Regardless of the type of solar panels you are using, make sure not to mount them on locations where there are RV components that can cast shade over them.

    Securing The Solar Panels In Place

    You can use brackets to put a small gap between the panels and your RV’s roof. If you opt to use brackets, you need to apply a sealant to the brackets. The adhesive will ensure that the brackets stay in place even if it rains.

    Once the sealant is completely dry, you can proceed to screw the panels into the roof. Make sure that you are placing the screws on the panels’ frame.

    Avoid shooting the panels with screws, as this mistake could lead to irreparable damage.

    Install The Wires

    Your solar power system’s wiring should run from the panels to the charge controller. You can run the wiring through the refrigerator vent if you do not want to add wiring holes to your RV.

    If your refrigerator vent is too far from the charge controller, you have no choice but to drill holes where the wirings can run. You can run the wirings beside your RV’s plumbing pipe. Once the wires reach the charge controller, apply a sealant to the holes you made.

    Alternatively, you can drill holes and run your system’s wiring into the interior wall of your RV. This way, you can hide the wiring and make them look neat. Just make sure to seal every hole that you drill to ensure that there will be no leakage when it rains.

    Mount Your Charge Controller

    The nearest possible area to the batteries is your charge controller’s best mounting location. This way, you will only need to use a short wire to connect the batteries and charge controller. If you cannot place the charge controller beside the batteries, it needs to be at least within a yard from the batteries.

    After mounting the charge controller into the wall, you need to connect the wires to the charge controller. Your RV solar power kit will come with an instruction manual. Make sure to refer to it to learn the correct wiring procedure when connecting the solar panels to the charge controller.

    To ensure you connect each end of the wire correctly, we recommend using a multimeter to test the wire’s polarity. Then, use tape to indicate each wire’s polarity. Once polarity testing is complete, you can proceed to connect the cables to the solar panels, batteries, and charge controller.

    Install The Dc/Ac Inverter

    Chances are you have AC-powered appliances inside your RV. If you want to use them, you need to install an inverter to convert DC electricity produced by your solar panels to AC.

    The ideal installation position of the inverter is anywhere away from heat and other damaging elements. If you are unsure how to install the inverter, your RV solar power kit’s installation manual will tell you the steps.

    After finding the ideal inverter mounting position, connect the negative and positive wires to the inverter. Next, connect the inverter to your RV electrical system, making sure to connect the negative cables first.

    Once all the wires are running throughout your RV’s solar panels, charge controller, battery, inverter, and electrical system, your solar power system is good to go. You can now utilize sunlight to power your motorhome’s appliances. (source)


    Three significant factors affect the cost of installing a solar power system in an RV. These are the RVs

    An RV solar power kit can cost approximately 400 to 1000, depending on the abovementioned factors. If you plan to purchase an RV solar power kit, we recommend the Renogy 200 Watts Monocrystalline RV Solar Panel Kit and Renogy 400 Watts 12 Volts Monocrystalline Solar RV Kit.

    much, does, cost, install

    If you live in an RV full-time, you may even spend up to 3000 for installing solar power.

    RV Solar Panels: A Guide For Beginners

    Solar panels atop RVs are all the rage. Everybody’s installing them. But what are RV solar panels? How do they work, what can they do for you, and are they worth the investment? Let’s find out!

    What Are RV Solar Panels?

    In the 1800s, scientists observed something called the photovoltaic effect, where some materials would produce an electric charge and current when exposed to sunlight. Attempts were made over the years to create “solar engines,” as they called them, but most had very low efficiencies. It wasn’t until the 1950’s that scientists discovered that silicon (found in sand) could create a much more efficient solar panel.

    This initial discovery led to the development of solar cells that could harness the sun’s energy and turn it into electricity. The technology has evolved over the years, but the concept remains the same.

    A solar panel is a panel filled with solar cells that capture the sun’s energy and turn that energy into usable electricity that powers homes, businesses, coffee pots, and, yes – your RV!

    Let’s find out how it all works!

    How Do RV Solar Panels Work?

    Let’s imagine you have a couple of solar panels on the roof of your RV. If your RV is on the road or parked during the day, sunlight hits your solar panels, and cells on the panels absorb energy from the sun.

    Within your solar panels’ cells, circuits take the energy absorbed by the sun’s cells and turn it into electrical current. The electrical current is fed through wires to a charge controller that controls the battery’s current.

    So the system looks like this:

    This energy becomes DC (direct current) electricity that charges your RV’s house battery or batteries, essentially “storing” energy to be used to power devices and appliances in your RV or charge devices for your later use.

    This DC power from the solar panels and batteries is typically 12 volts. This DC power runs lights, appliances, and electronics in the RV.

    However, you can also take that 12-Volt DC, pass it through an inverter, and convert it to 120-Volt AC (alternating current) electricity (like the outlets found in a sticks-and-bricks house) to power 120-Volt devices such as a coffee pot.

    There are 120-Volt outlets scattered throughout your RV, but those don’t have power unless you’re using a generator or your RV is plugged into shore power.

    If you want to run a 120-Volt appliance when you’re boondocking in the desert, you can harness the sun’s energy through solar panels — charge controller — batteries — inverter, and voila! = 120-Volt electricity at your command!

    Theoretically, you can power anything with the sun’s energy provided you have enough solar panels, batteries, and conversion ability!

    How To Know How Many Solar Panels You Need For Your RV

    Knowing how much solar power you need for your camping comfort involves figuring out a couple of pieces of information. These two parts of the equation help you determine how many solar panels you’ll need for the sun’s power to deliver the electricity you want. The two parts of this equation are:

    • How many watt-hours will you use each day? (energy used)
    • How much energy do your solar panels provide to your battery/batteries? (energy stored)

    You must balance all of this for an optimal system. Solar panels without enough batteries to store all of the power they produce will waste your money and not provide the power you need.

    Conversely, one solar panel and lots of batteries will not allow enough of the sun’s energy to be harnessed to fill those batteries for your use!

    much, does, cost, install

    Figuring out this balancing act can take some work and requires an entire article of its own to explain, but we can distill down the basics here.

    Calculating How Much Energy You Use

    First, you need to know how much energy you use in a day. There are a couple of ways you can do this. The first involves math. Estimate how much power you’ll consume while boondocking in your RV by learning what each device or appliance you want to use consumes and multiplying that by the number of hours you’ll use that device or appliance.

    Here’s an example: You have one television that consumes 90 Watts. You estimate that you’ll watch television for approximately two hours per day. So 90W x 2h = 180 Watt/Hours per day

    You can do the same for every appliance or device you may want to power as you boondock, and you would add the total of Watt-hours consumed. From there, you can estimate how many panels you need.

    Calculating Energy Generation and Storage Needs

    A decent assumption is that a 100-Watt solar panel will generate on average 350 Watt-hours of power per day. However, this will vary significantly by location and time of year. This article by Mortons on the Move explains a way to get a more accurate result by using PVwatts.

    You’ll also need to know how many batteries you’ll need to store that amount of power! One 100 ah 12volt Battle Born battery has about 1200 Watt-hours storage capacity.

    Keep in mind that your solar panels will only give you the stated number of Watts under perfect conditions. Perfect conditions = direct sun pointing directly at the panel. On a rainy day, you won’t get 100 Watts from your 100-Watt solar panel. If you’re parking in the shade, you won’t get 200 Watts from your 200-Watt solar panel.

    It’s also challenging to estimate the amount of power you’ll use on a given day because days are different. You may be outside all day today enjoying nature, and fall into bed and watch 15 minutes of television tonight. Tomorrow could be a rainy day, and you’ll stay inside your RV, do a lot of work on your laptop, and watch a couple of hours of television in the evening. So estimating high is usually a good idea!

    Rather than estimating your daily power consumption using math, some people prefer to simply go out camping without electrical hookups and monitor their battery usage over a typical day. Installing a battery meter like the Victron BMV712 before installing solar can give you an accurate reading of how much power your RV needs.

    RV Solar System Components

    Before we take a look at how you install a solar system, let’s review the RV solar system components:

    Battery Bank

    Your battery bank is the heart of an RV’s power system. Without a battery, an RV has no way to store power. The battery is where energy provided by the sun is stored for your use. Your solar panels will charge the battery bank.

    But not all battery banks are created equal, and not all are suited to the unpredictable charge cycles of solar systems. Lithium batteries for solar applications are the superior choice over lead-acid.

    RV Solar Panels

    Your RV solar panels will sit on the roof of your RV collecting energy from the sun in the solar cells and transferring that energy (through a charge controller) to your battery bank. Your solar panels may lay flat, or you may choose to employ a mounting method that allows you to angle the solar panels toward the sun.

    Charge Controller

    The charge controller mounts inside the RV. Wires run from your solar panels to the charge controller and from the charge controller into your battery bank. The purpose of the charge controller is to control the rate at which your batteries charge. The charge controller is required to prevent overcharging and in the case of an MPPT charge controller, operate the panels as efficiently as possible.


    The electricity from your batteries is 12-Volt DC electricity. With this, you can power all 12-Volt devices and appliances as well as the 12-Volt (cigarette lighter) ports in your RV. If you want to use 120-Volt AC electricity to power a coffee maker, laptop, Instapot, or anything that requires AC, you’ll need an inverter that transforms 12V DC power to 120V AC power.

    You’ll mount your inverter inside your RV as close to your battery bank as possible, and your AC appliances and devices will receive the transformed (from DC to AC) power from that inverter.

    Do You Need To Use RV-specific Solar Panels?

    No! Any type of solar panel can be made to work with an RV; however, there may be some challenges.

    First is space available. An RV roof may have lots of stuff on it and require the use of smaller panels. If the roof is wide open, full-size residential panels like used on homes can be used for RV solar panels.

    The second challenge with non-RV-specific panels is the voltage they operate at. Most RV solar panels are around 17-20 volts which will work with most PWM charge controllers to charge a 12-volt system. Home solar panels are usually 40-70 volts and cannot be used with PWM charge controllers.

    You can use MPPT style controllers as long as they have a high enough voltage rating. Using an MPPT controller allows the use of most of any solar panel for an RV.

    How To Hook Up Solar Panels to RV Batteries

    Now that we know how many solar panels you want to add to your RV let’s figure out how to connect them to your RV batteries to produce the electricity you need!

    Solar electric systems for RV’s vary enormously, especially if installing a larger system, make sure you are confident working with electrical wiring before taking this on. For systems up to a few hundred watts or kits, the voltages are not dangerous and can be installed by anyone. Regardless of the size, the following instructions are a high level of how the components should be wired.

    Let’s assume that you’ve purchased a kit containing the solar panel system parts, and you have a battery or battery bank installed in your RV.

    • A solar panel (or more than one, depending on what you’ve opted to buy).
    • A charge controller.
    • A wiring harness (and possibly connectors, adapters, and mounting brackets)

    You may also want a battery monitor and an inverter (to turn that 12V DC power into 120V AC power).

    Steps for Connecting RV Solar Panels to Your RV Batteries

    Here are the steps to connecting your solar panels to your batteries:

    • Mount your solar panels on the roof of your RV.
    • Mount your charge controller inside the RV as close to your batteries as possible.
    • Run your wiring from the solar panels into the RV and over to the charge controller. (You can run your wiring through a refrigerator vent or through the holes where the plumbing enters the RV if these are located near your batteries. If not, you can drill a hole through the roof of your RV to run your wires and thoroughly cover and caulk any drilled holes.) You should install a fuse or circuit breaker on the wires for this run.
    • Connect the wires from your charge controller to your battery bank. A fuse slightly larger than the charge controller’s rated current should be installed on these wires.
    • At this point, the system is fully installed but the RV solar panels are not connected to the charge controller. Before making the final connection it’s important to double-check all wiring to make sure polarity (positive and negative) are all correct. Once confident you can plug in the solar panels to the charge controller. We recommend doing this at night or with the solar panels covered by a blanket to prevent a spark.
    • This step is optional, but if you want to use 120-Volt AC appliances, you’ll want to mount an inverter inside your RV, as close to the batteries as possible, and run appropriate wiring to that inverter.

    Note: If you are wiring your solar panels/controller directly to your battery bank, there is no need to disconnect the existing converter in your RV. Both the converter and the solar panels will be able to supply charge to the battery bank.

    Are RV Solar Panels Worth It?

    If you always camp at campgrounds and RV resorts where you will be paying for electrical hookups to power your RV and your various devices and appliances, then investing in a solar system may not be worthwhile.

    However, if you like to boondock – to stay in areas where there are no electrical hookups – beaches, city parks, state parks, the desert, a solar panel system is an excellent addition to your RV lifestyle. Solar panels provide silent power and can minimize the need for a noisy generator to recharge your batteries.

    Solar panels are a remarkable development in renewable energy! As an RVer, a solar panel system frees you! It allows you to go anywhere and stay anywhere, harnessing the incredible power of the sun to address all of your electrical needs.

    Solar panel buying guide for RVs, campervans and travel trailers: Everything you need to know

    Want to outfit your camper with solar panels? Read on.

    Taylor Freitas is a freelance writer and has contributed to publications including LA Weekly,, and Hospitality Technology. She holds a B.A. in Print and Digital Journalism from the University of Southern California.

    If you own an RV or campervan, you’ve probably considered investing in solar panels for your vehicle. Depending on your lifestyle and energy consumption habits, solar panels for RVs can be an excellent investment.- but are they right for you?

    Before you start shopping around for solar panels for your RV, it’s important to understand the basics behind them, including what they’re used for, how to install them and how to maintain them. We’ve answered each of these questions (and more) in this guide, so you can decide if RV solar panels are right for you.

    Can solar panels save you money?

    Interested in understanding the impact solar can have on your home? Enter some basic information below, and we’ll instantly provide a free estimate of your energy savings.

    What are RV solar panels?

    RV solar panels work just like residential and commercial solar panels except on a smaller, more transportable scale. Once they’re installed on your RV, motorhome or camper, solar panels collect sunlight and convert it into usable electricity for your vehicle. In turn, you can use this electricity to power the appliances, lights and sockets in your RV.

    Without solar panels, you’ll need to rely on another power source for electricity, such as a generator or campsite hookup. RV solar panels provide a convenient and environmentally friendly alternative to these traditional sources since they rely on renewable power.

    Can solar panels save you money?

    Interested in understanding the impact solar can have on your home? Enter some basic information below, and we’ll instantly provide a free estimate of your energy savings.

    How many RV solar panels do you need?

    Unlike residential and commercial solar systems, which are designed to power an entire home or business, RV solar systems typically deliver a more modest output. This usually isn’t an issue since you don’t use as many lights and appliances in your RV as you would in a brick-and-mortar property.

    So how many solar panels will you need for an RV? It depends on a few factors, including your energy consumption habits, the efficiency of the panels and the amount of sunshine your home receives each day.

    Calculating your average daily energy consumption is the first step to determining what size RV solar system you need. To do this, you’ll need to make a list of the appliances you want to use, how much power they require and how many hours per day you’ll use them.

    For example, let’s say you have a 500-watt microwave that you want to use for 15 minutes each day. By multiplying these figures, you can determine that you’d need to generate 125 watts of electricity just to use your microwave for that amount of time. Repeat this process with every device or appliance.

    To figure out how much electricity your system will generate per day, you need to multiply your system size by how many hours of direct sunlight your panels would receive daily.

    For our example, let’s assume we have an RV solar system that’s composed of four individual solar panels generating 100 watts each, giving us a total system size of 400 watts. We’ll also assume that we’re in a reasonably sunny area that receives at least five hours of sunlight per day.

    With some quick math, we can see that this system will generate 4,000 watt-hours (Wh) of electricity per day. You can use this output as a benchmark to compare against your energy needs (calculated above), then adjust the number of panels and wattage accordingly.

    For reference, a 4,000-Wh system is generally enough to run small appliances and turn on the lights.- but it won’t support heavy-duty appliance usage. In fact, even the largest RV solar panel systems aren’t designed for constant or excessive electricity usage. So if you need tons of power, solar panels won’t be the best choice.

    Configuring an RV solar panel system

    There are three kinds of solar panels for RVs: monocrystalline, polycrystalline and amorphous.

    • Monocrystalline panels are the most efficient (and most expensive) of the three, so they will generate the most energy in the least amount of time.
    • Polycrystalline panels are slightly less efficient, but they’re a durable and reliable option.
    • Amorphous panels are newer to the market. They aren’t as efficient as their counterparts, but the thin and bendable construction makes them easy to install.

    In addition to solar panels, there are several other components that you’ll need to complete your RV solar system, including:

    • Solar inverter, which converts the solar energy from DC to AC power
    • Charge controller, which protects the storage system from overcharging
    • Solar battery. which stores the generated energy

    These components are often bundled with solar panels, which is great for first-time solar installers. If you already have solar panels that you want to use, you can purchase these items separately.

    Although it is possible to use residential solar panels on your RV, it’s not an option that we recommend. That’s because these types of panels are larger and take up more roof space than the RV-specific products, so you may not have enough room on top of your vehicle. Also, the voltage on residential panels may not be compatible with the other components of your RV solar power system.

    Not sure where to shop? Online retailers like Amazon have a vast selection of solar panels and starter kits for RVs, along with customer reviews of each product. Stores like Camping World and Home Depot also have a decent range of options.

    Installation and maintenance

    Once you’ve found and received the right solar panels for your RV, it’s time to install them. Fortunately, installing RV solar panels is fairly straightforward and shouldn’t require a professional.

    If you’ve purchased solar panels that need to be mounted to the roof, they should have come with installation instructions. Typically, this involves minor handiwork like fastening your panels to your RV using brackets. Amorphous solar panels are even easier to install because they come with an adhesive backing that you can quickly affix to your roof.

    Don’t want to attach the solar panels to your RV? There are also portable briefcase-style solar sets that can be unfolded and propped up to absorb sunlight when you’re not driving. When you’re done, you can tuck them away.

    Once your system is up and running, maintenance should be minimal. When you use solar power as an energy source, you don’t need to worry about buying fuel or creating noise like you would with a generator. Plus, many RV solar panels come with long-term performance warranties (usually 25 years) so you can feel confident that you’re making a Smart investment.

    Cost and rebates

    The overall cost of your system will depend on factors including the type of panels you choose and how much electricity you need to generate. If you need lots of power, you’ll need to buy more equipment.- driving up the price.

    You can find an RV solar system kit for any budget, with options starting around 150. However, if you’re looking for a bundle that has everything you need to get started, you should expect to pay closer to 250 to 500. Renogy and Windy Nation are two of the best-known brands for RV solar systems, but there are plenty of high-quality options to consider.

    If your RV is your primary or secondary residence, you can save money on your solar investment by claiming the federal residential solar energy credit. which provides a 26% tax credit on solar systems purchased and installed through 2022.

    Are RV solar panels right for you?

    It’s difficult to argue with the benefits of solar energy, but RV solar panels might not be right for everyone. If you live in your RV and often take it off-grid (where there are no campground hookups), then solar can be a convenient and eco-friendly alternative to gas-powered generators. However, solar might not be worth the investment if you only use your RV once or twice per year or only stay at campgrounds or RV parks.

    about solar panels:

    Your Guide to RV Solar Panels: Components, Installation, and

    Which is more practical for your RV, a generator or solar panels?

    David Kuchta, Ph.D. has 10 years of experience in gardening and has read widely in environmental history and the energy transition. An environmental activist since the 1970s, he is also a historian, author, gardener, and educator.

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    It’s increasingly common to see solar panels on the roofs of recreational vehicles (RVs). While solar panels can’t replace an internal combustion engine and turn your RV into an all-electric vehicle, they can allow you to run your lights and appliances cleanly rather than relying on a fossil-fueled generator.

    Solar panels also give you the freedom to camp off-grid and in places that don’t allow generators, rather than having to find a spot in a crowded campground with an available hook-up. And of course, with solar panels, you can reduce your carbon footprint.

    Here, we discuss RV solar components and whether they are worth investing in for your next RV trip.

    RV Solar Components

    RV solar is not as simple as attaching solar panels to the roof and plugging in appliances. Here are the main components in an RV solar system.

    Solar Panels

    Panels can be flexible, portable, or rigid. Lightweight flexible panels are better suited when an RV roof is molded rather than flat, while portable panels can be placed anywhere on or off the vehicle, so they can capture sunlight even if the RV is parked in the shade. Rigid panels are much heavier, but they are also more durable and efficient. Panels may generate 150 watts in flexible and portable panels and up to 250 to 300 watts in rigid panels.


    Most RVs have two batteries. A 12-volt lead-acid/AGM starting battery is used to start the engine, while a 12-volt RV house battery bank is used to run the DC-powered appliances, such as fans, lights, and water systems.

    An AC/DC inverter can provide 120-volt power from a shore power hookup at an RV campground to power air conditioners, microwaves, and other energy-intensive appliances. In more modern RVs, older lead-acid RV battery banks have been replaced by lithium iron phosphate batteries charged by solar panels and the RV’s engine alternator via DC/DC chargers. Together, these provide much more Rapid charging and much longer-life battery banks, especially suited for off-grid use.

    Some RV owners upgrade to lithium-ion batteries, which are lighter, more efficient, maintenance-free, can hold more energy, and have a longer lifetime. The downside is they cost significantly more.

    Solar Charge Controller

    A solar charge controller protects your battery by regulating the flow of electricity from solar panels to the battery. The controller matches the voltage output of the solar panels to the voltage capabilities of the battery or batteries.


    Many RVs already have inverters that convert DC power from your 12-volt battery into 120-volt AC power used by your lights and other electrical equipment. expensive inverters can produce more reliable and consistent power needed to run sensitive equipment like electronics or medical equipment.

    Transfer Switch

    A transfer switch allows you to switch the source of your power from the battery to shore power when parked in a campground, or to turn off a propane source when you are driving.

    Solar vs. Generator: Which Is Better?

    It’s no surprise that solar panels are more environmentally friendly than fossil-fuel generators. Here are some other factors to consider:

    • Energy: Solar panels require adequate sun to charge your batteries, while generators require adequate fossil fuels.
    • Space: A generator and its fuel take up a significant amount of interior storage space. Solar panels are limited by the amount of roof space.
    • Flammability: Fuels for generators (usually diesel, gasoline, or propane) are flammable. Some states prohibit the use of propane generators while driving.
    • Maintenance: Generators need regular maintenance and can leave sulfate residues in batteries. With no moving parts, solar panels need little maintenance other than dust and debris removal.
    • Power Speed: Generators provide instant power. Solar power is slower.
    • Costs: Solar panels usually cost more to install than a generator, but once installed, the sunshine is free and infinitely renewable.
    • Noise: Running a generator at night in a crowded campground will not win you any friends. Absolutely quiet solar panels, however, do not generate anything at night.
    • Emissions: Generators emit greenhouse gases, carbon monoxide, and particulate matter, while solar panels are emissions-free. The manufacture of solar panels is not carbon-free, but neither is the manufacture of generators or the fossil fuels that run them.

    Installing Solar Panels on Your RV

    Installing solar panels on an RV is no more complicated than installing them on the roof of a home.

    Treehugger Tip

    If you are uncomfortable or inexperienced in working with electrical systems, hire a professional, such as a professional RV converting company.

    When you’re ready to purchase and prepare for installation, remember to:

    • Calculate how many panels you will need. Identify the power requirements of your appliances and how many hours per day you use them.
    • Consider what equipment your RV already has. A number of RVs for sale on the market already come solar-equipped or solar-ready. For safety and efficiency, be sure that your RV has heavy-gauge wiring adequate to supply the full amount of power from your panels to your batteries.
    • Buy everything at once. Each component of your RV solar system needs to be compatible with each other. RV solar panel kits are more expensive than buying each component separately, but their components are already compatible.

    Installing an RV solar system consists of upfront costs that can be expensive. But these costs may save you money in electricity and fuel costs, as well as camping fees. Solar panels will also reduce your greenhouse gas emissions. If you want to go completely emissions-free, consider a car-camping road-trip in an electric vehicle.

    Depending on the amount of sunshine you get and the amount of energy you use, a single 100-watt solar panel is likely to be able to keep a 12-volt DC battery charged. It is likely you’ll want multiple higher-wattage panels and perhaps multiple batteries to give you more power for a longer period of time.

    Depends on your usage. The larger upfront cost of solar panels, compared to a generator, pays itself off if you frequently rely on solar power off-grid. However, if you only park your RV in campgrounds with shore power, it’s probably not worth your money and effort to invest in solar panels.

    If your RV is not solar-ready, you may need more than a minimal 100-watt solar panel kit with mounting brackets and a solar charge controller, which can cost as little as 150. With a lithium-ion battery and multiple panels on your roof, the cost can be a few thousand dollars.

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