We provide all sizes of rigid, semi-rigid (walk on) and flexible solar panels for RVs. Our panels are specially designed to work well when partially shaded and have the highest power output solar cells commercially available. We have designed and built the panels to handle harsh environments. They are ideal for use on RVs. Our solar panels are designed in the USA and built to our specifications.
Flexible or Semi-rigid solar panels taped down with double sided VHB tape are excellent solutions for RVs. Easy installation, low windage, lightweight. We can walk you through your installation and wiring if you'd like, call 773-965-2546. RV solar kits are purchased here, detailed kit information here.
Flexible or Semi-rigid solar panels taped down with double sided VHB tape are excellent solutions for RVs. Easy installation, low windage, lightweight. We can walk you through your installation and wiring if you'd like, call 773-965-2546. RV solar kits are purchased here, detailed kit information here.
High Performance RV Solar Panel Specifications Summary
PERC / HJT Series
PERC (Passivated Emitter and Rear Contact) cells are about 5% less efficient than Sunpower cells and cost about 25% less. These modified conventional cells produce 6 to 12 percent more energy than conventional monocrystalline solar cells. Premium PERC solar cells have an extra layer within the back side of the cell. This allows some of the sun’s rays to reflect back into the solar cell, increasing the amount of energy produced resulting in a conversion efficiency of up to 24% with our newest HJT cell panels. The manufacture of the panels can be automated with PERC and HJT cells (Sunpower cells must be handmade). This enables us to provide the same high quality at a lower price per watt. All materials are the same in the Sunpower and PERC and HJT panels.
We also provide even higher end solar panels with A+ grade Sunpower cells, see here or grid below for data.
We also provide even higher end solar panels with A+ grade Sunpower cells, see here or grid below for data.
Grade A+ Sunpower Cell Solar Panels
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Walk on solar panels on RV roof with mounting kit, held with VHB tape
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Click below to learn more about specific solar panel types
The key to a high performance, high quality marine grade RV solar panel that will last is the quality of the solar cells used in the panel. Our solar panels have essential blocking and bypass diodes built in (to prevent power from flowing into shaded panels or from batteries into solar panels at night), and potted (filled with silicone) junction boxes to protect the electronics from environmental damage. Our rigid solar panels have strong anodized aluminum frames and marine grade sealants. Our semi-flexible and semi-rigid solar panels average the same output per area as our rigid panels and are constructed with high quality ETFE laminates that won't deteriorate (turn milky) or delaminate from intense heat and UV exposure. They are the highest quality panels available for RV use.
A Few Facts About RV Solar Panels
Panel Type - There are many articles written on the two types of solar panels also referred to as photovoltaic panels (PV) ; monocrystalline and polycrystalline. Monocrystalline panels are made up of single crystal silicon wafers. Polycrystalline panels are made using silicon wafers that have a multiple crystalline structure. There are pros and cons to each type of panel. Monocrystalline panels have a higher output per square inch in direct sun. They can be sensitive to shading and output may degrade faster on cloudy days. Polycrystalline panels tend to have a lower output per square inch in direct sun but are not as sensitive to being shaded. It is important to note that today's newer high quality polycrystalline panels perform within 5% of monocrystalline panels in full sun. The premium monocrystalline SunPower cells used in our solar panels provide the best all around performance of any solar cells on the market.
Panel Solar Cell Quality - Because RVs have a relatively confined space, maximum power output per surface area is very important. The quality of the solar cells used in solar panels is a key factor in determining the panel output. Solar cells are passed under a standard light source and graded as to their output (1-10). Grades are grouped into classes. Class A (and A+) solar cells are grades 8-10, Class B solar cells are grades 4-7 and so on. Solar cell quality follows a bell curve; there are many more Class B solar cells than Class A. We at CMP specify only the best Class A-9 (A+) solar cells for use in our panels which results in a panel efficiency of 16-24%. Less expensive Class B and C panels are often used on land based solar farms where space is not an issue. Though more expensive, our customers have reported that our solar panels often outperform the performance rating on the panel label.
Panel Solar Cell Quality - Because RVs have a relatively confined space, maximum power output per surface area is very important. The quality of the solar cells used in solar panels is a key factor in determining the panel output. Solar cells are passed under a standard light source and graded as to their output (1-10). Grades are grouped into classes. Class A (and A+) solar cells are grades 8-10, Class B solar cells are grades 4-7 and so on. Solar cell quality follows a bell curve; there are many more Class B solar cells than Class A. We at CMP specify only the best Class A-9 (A+) solar cells for use in our panels which results in a panel efficiency of 16-24%. Less expensive Class B and C panels are often used on land based solar farms where space is not an issue. Though more expensive, our customers have reported that our solar panels often outperform the performance rating on the panel label.
Average 5 Sun Hours in a Day
The Importance of Solar Cell Quality - Not All 100 Watt Solar Panels Are Created Equal -
High quality high performance solar cells will produce more power at various sun angles than lower quality solar cells; up to 30% more power. An important consideration in determining how much solar power you need is how many watt hours or amp hours of power you can expect to generate in a 24 hour period. Let's say you cruise in an area that receives an average of 5 hours of full sun a day. The average is computed based on the seasonal sun angle and the sun angle from morning through evening. A 100 watt solar panel with average efficiency solar cells may produce 100 watts x 5 hours or 500 watt hours of power in a day. At 13 volts that's about 38 amp hours in a day. A 100 watt panel with high efficiency solar cells will produce up to 30% more power in a 24 hour period or 100 watts x 6.5 effective hours or 650 watt hours of power in a day. At 13 volts, that's about 50 amp hours in a day. 38 amp hours vs. 50 amp hours in a day is significant for an RV. Add more panels in the mix, say 400 watts and we see 152 amp hours vs.200 amp hours, a difference of 48 amp hours. This simple analysis does not take into consideration the impact of clouds or shading both of which will make the disparity even greater. Clearly, the higher the quality of the solar cells the more power produced over time.
Panel Shape - The largest market for solar panels is commercial applications where many many panels are mounted on a roof or in a field. These panels are usually rectangular in shape often twice as long as wide. This shape is often not ideal for RV applications. Often a more square shape is preferable.
Marine Grade - It's no secret that the RVing can be tough on equipment. To withstand the rigors of various RV environments, solar panels should have strong stout anodized aluminum framing, should be well sealed and waterproof, and have the electrical box on the back of the panel encased in an inert non-corrosive waterproof material (like silicone) to protect the electronic components. Our solar panels are designed with bypass diodes to significantly reduce the impact of shading that so often occurs when RVing.
Choosing the right panel for your needs will require study and/or discussion with PV panel experts. Our staff at Custom Marine Products are ready to help you design the best solar system for your needs. Contact us via email or phone (773-965-2546) to discuss your project.
High quality high performance solar cells will produce more power at various sun angles than lower quality solar cells; up to 30% more power. An important consideration in determining how much solar power you need is how many watt hours or amp hours of power you can expect to generate in a 24 hour period. Let's say you cruise in an area that receives an average of 5 hours of full sun a day. The average is computed based on the seasonal sun angle and the sun angle from morning through evening. A 100 watt solar panel with average efficiency solar cells may produce 100 watts x 5 hours or 500 watt hours of power in a day. At 13 volts that's about 38 amp hours in a day. A 100 watt panel with high efficiency solar cells will produce up to 30% more power in a 24 hour period or 100 watts x 6.5 effective hours or 650 watt hours of power in a day. At 13 volts, that's about 50 amp hours in a day. 38 amp hours vs. 50 amp hours in a day is significant for an RV. Add more panels in the mix, say 400 watts and we see 152 amp hours vs.200 amp hours, a difference of 48 amp hours. This simple analysis does not take into consideration the impact of clouds or shading both of which will make the disparity even greater. Clearly, the higher the quality of the solar cells the more power produced over time.
Panel Shape - The largest market for solar panels is commercial applications where many many panels are mounted on a roof or in a field. These panels are usually rectangular in shape often twice as long as wide. This shape is often not ideal for RV applications. Often a more square shape is preferable.
Marine Grade - It's no secret that the RVing can be tough on equipment. To withstand the rigors of various RV environments, solar panels should have strong stout anodized aluminum framing, should be well sealed and waterproof, and have the electrical box on the back of the panel encased in an inert non-corrosive waterproof material (like silicone) to protect the electronic components. Our solar panels are designed with bypass diodes to significantly reduce the impact of shading that so often occurs when RVing.
Choosing the right panel for your needs will require study and/or discussion with PV panel experts. Our staff at Custom Marine Products are ready to help you design the best solar system for your needs. Contact us via email or phone (773-965-2546) to discuss your project.
Solar Tax Incentive - As long as there is a bathroom, kitchen, and at least a bunk onboard and your RV is used in the United States, it qualifies. This Federal tax credit is a 30% credit on all qualified expenses to purchase and install solar panels and a solar system (including any installation charges), with no maximum limit for equipment placed in service after 2008. Plus you may have tax credits in your state.
How much solar power do you need on your RV?
The amount of power needed while RVing depends on many factors including the energy used by appliances and lighting, the output of the engine alternator, the climate and the length of time away from shore power. These and other factors will determine the amount of solar power and thus size of the solar panel(s) you may need for your RV.
Check out our seminar slides titled Selecting the Proper Solar System and our tutorial titled Guide to Selecting and Sizing a Solar Charging System under our SUPPORT section. Working with Ed Foster our PV engineer, we have developed several worksheets to assist you in analyzing your on board power generation and consumption and estimating your solar power requirement. Print out our Solar Power Calculation Worksheet and use it as a guide to calculate your power generation requirement. Several other worksheets can be downloaded in our Manuals and Info section, and you can find a solar sizing app there as well.
Check out our seminar slides titled Selecting the Proper Solar System and our tutorial titled Guide to Selecting and Sizing a Solar Charging System under our SUPPORT section. Working with Ed Foster our PV engineer, we have developed several worksheets to assist you in analyzing your on board power generation and consumption and estimating your solar power requirement. Print out our Solar Power Calculation Worksheet and use it as a guide to calculate your power generation requirement. Several other worksheets can be downloaded in our Manuals and Info section, and you can find a solar sizing app there as well.
Easy to Assemble RV Solar System Kits
Properly matching solar panels to charge controllers can greatly increase the system charging efficiency, reducing battery charge time and increasing battery life. Our complete solar panel kits provide everything you need to install and operate an RV solar system; solar panel, hardware, charge controller Solar Controllers, solar wire, MC4 connectors and instruction manual. Contact us for help in designing a custom kit specific to your needs.
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Semi-Flexible RV Solar Panels with SunPower Solar Cells |
Our SunPower monocrystalline cell flexible 55 - 145 watt high efficiency solar panels are manufactured to our specifications by highly acclaimed solar panel manufacturers.
Unique features of our semi-flexible marine grade RV solar panels include the following:
Unique features of our semi-flexible marine grade RV solar panels include the following:
- Quality materials - We use impermeable ETFE laminates that will not cloud of degrade with exposure to intense UV light.
- Grade A+ SunPower solar cells - The panels are comparable in performance to our rigid panels.
- Mounting flexibility - Flexible panels will contour and flex against curved surfaces with a maximum bending radius of 30 degrees, ideal for mounting on an RV roof.
- Mounting options - Each panel can be affixed by high bond tape or screw mounting. Grommets are an added bonus for ease-of-installation. VHB tape from 3M is an excellent and fast solution for mounting flexible solar panels on RV roofs (similar to tape used to hold molding on cars).
- Plug and play - All panels come with industry standard waterproof MC4 connectors on 3 foot (1 meter) long pigtails. Walk on panels have a 6 foot duplex cable.
- Maximum output with shading - The panels are equipped with blocking and by-pass diodes so a shaded panel has minimal effect on the solar array performance. Good for when parked under trees and such.
- Purchase options - These panels can be purchased individually or as a complete easy to install kit.
- Durable - Although not recommended, the flexible panels can be lightly stepped on, walk on panels can be driven on, rigids don't step on at all as they are glass.
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Semi-Rigid Marine Grade RV Walk On Solar Panels with SunPower Cells |
CMP has just released a new series of semi-rigid walk on RV solar panels. With a strong aluminum backing and very thick ETFE laminate non skid surface, these panels can be walked on and can conform to a slightly curved surface (5 degrees). These panels are ideal for mounting on an RV roof as you can walk on them without fear of damaging them. We use premium SunPower Gen III solar cells with an efficiency rating of up to 23.7%, the highest efficiency available anywhere. There is no glass and no aluminum frame so these panels are considerably lighter than our rigid panels but heavier and stiffer than our semi-flexible panel series. The expected life of these panels is 15 years. The panels are available with a white or black backing. They are available in 110,120, 150 and 175 watt power output.
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Rigid Marine Grade RV Solar Panels with SunPower Cells |
The ideal RV solar panel must be highly efficient (maximum output per surface area) and robust enough to withstand harsh environments across the country. We offer various sizes and types of solar panels to meet the unique needs of our customers. For an RV with modest power requirements, we recommend our 110 - 140 watt panels and for an RV with greater power requirements we recommend our 140 - 200 watt panels. These panels are excellent for mounting on an RV roof.
All CMP our solar panels are high quality, high output Class A+ marine grade and backed with a 5 year manufacturers and CMP warranty.
All CMP our solar panels are high quality, high output Class A+ marine grade and backed with a 5 year manufacturers and CMP warranty.
Our rigid glass monocrystalline solar panels using premium SunPower solar cells are some of the most efficient panels available at over 23% efficiency. These marine grade solar panels will perform extremely well in both full and partial sun. When integrated with our Tracer BN or Xtra-N MPPT controller, this combination provides the highest output per sq. inch of any most system available.
Our 105 watt monocrystalline solar panel uses Class A+ Bosch solar cells and performs at 17.9% efficiency. This marine grade solar panel will perform extremely well in both full and partial sun. It is built to withstand harsh environments. You can expect at least 34 amp hours on a sunny day.
Our 100 watt polycrystalline solar panel is an excellent overall performer in sun and cloud due to the use of very high quality Class A solar cells. It is tolerant of some shading from trees, A/C unit, etc. As with all of our rigid solar panels, the electrical box is sealed (potted) with inert silicone to eliminate any possibility of corrosion.
Our 150 watt polycrystalline solar panel uses the same technology as our popular 100 watt panel, is 16+% efficient and will perform well in both full and partial sun. This panel is tolerant of partial shading from trees, antenna, A/C units, etc. It is ideal for top-of-pole mounting.
What are the best RV solar panels?
The best RV solar panels have five essential components:
1. Sunpower cells - even if a cell is partially shaded they still produce power. Sunpower's A+ grade cells (Maxeon) are among the best available putting out up to 23.7% efficiency.
2. Potted (silicone filled) junction boxes - so saltwater cannot corrode the electronics.
3. Easily mountable, either semi-flexible or rigid panels with stout anodized aluminum framing, depending on the application.
4. A+ grade solar cell quality. Cheaper panels will have lower quality, less efficient cells. Space is always at a premium in RV applications so the highest efficiency cells available are imperative. Highly efficient cells produce considerably more power at lower sun angles than lower grade cells.
5. Have bypass diodes to significantly reduce the impact of shading that often occurs when RVing.
What is the difference between a cheap RV solar panel and an expensive RV solar panel?
High quality high performance solar cells will produce more power at various sun angles than lower quality solar cells; up to 30% more power. An important consideration in determining how much solar power you need is how many watt hours or amp hours of power you can expect to generate in a 24 hour period. Let's say you RV in an area that receives an average of 5 hours of full sun a day. The average is computed based on the seasonal sun angle and the sun angle from morning through evening. A 100 watt solar panel with average efficiency solar cells may produce 100 watts x 5 hours or 500 watt hours of power in a day. At 13 volts that's about 38 amp hours in a day. A 100 watt panel with high efficiency solar cells will produce up to 30% more power in a day or 100 watts x 6.5 effective hours or 650 watt hours of power in a day. At 13 volts, that's about 50 amp hours in a day. 38 amp hours vs. 50 amp hours in a day is significant in an RV. Add more panels in the mix, say 400 watts and we see 152 amp hours vs.200 amp hours, a difference of 48 amp hours. This simple analysis does not take into consideration the impact of clouds or shading both of which will make the disparity even greater. Clearly, the higher the quality of the solar cells the more power produced over the course of a day.
How much solar power do I need on my RV?
It depends on how much power your RV uses and what you are trying to accomplish. Running a radio for an afternoon will use considerably less power than a refrigerator, lights, water pump, and a computer while RVing full time. Sizing your solar system is not an exact science and it may be best to leave space on your solar controller to size up as needed. As they say, you can never have too much power! An abundance of power is much more fun than a deficit. We have a google docs sheet available for edit to help you figure out the power you need, see it here: https://docs.google.com/spreadsheets/d/1CnNTXkCZ6kqdcLZ_kXOVL3F_L_zgdWxvnv8pe7XjC8A/edit?usp=sharing Of course feel free to call us any time to discuss your needs, we've built hundreds of solar systems and are happy to share our knowledge.
Can I power my refrigerator with a 120 watt panel?
Most likely yes. It will depend on the battery bank you have to run it when the sun isn't shining. Refrigerators on RVs are one of the most frequent uses for solar power. Here is a google docs sheet available to help you figure out the power you need on your RV: https://docs.google.com/spreadsheets/d/1CnNTXkCZ6kqdcLZ_kXOVL3F_L_zgdWxvnv8pe7XjC8A/edit?usp=sharing Generally a refrigerator in an RV draws 5 amps and is on we estimate 10-12 hours a day, depending on temperature outdoors.
Call us any time for help with your RV's solar panels or solar system, we're happy to talk you through the design of your custom solar system. We specialize in RV solar and all types of RV solar panels and systems. We pride ourselves on our service both before and after you purchase.