With the concept of green travel and low-carbon living becoming a hit, many RV manufacturers are installing matching solar systems on the roofs of their RVs before they leave the factory. Many owners who do not yet own one are also eager to try out the van solar installation, if you are because you are struggling to know what type of solar panels to choose, then this article may be helpful to you.
Roof mounted solar panels for RV can generally be categorized into two main types: rigid vs flexible solar panels.
In this post, I’ll go over the pros and cons of these two different types of van solar panels, as well as some simple installation methods and considerations.
Flexible Solar Panels
As suggested by their name, flexible solar panels for RV are more adaptable and can bend to fit slight curves, making them suitable for the rooftops of RVs and vans. Because they do not use glass and heavy backing materials, they are lighter and more suitable for vehicles like vans and SUVs, which may not have strong load-bearing roofs.
Pros:
- High adaptability: They can conform to the roof’s mild curves, making them applicable to a variety of vehicle models.
- Ease of installation: Their lighter weight makes these panels easier to install without the need for heavy mounting structures; they can be directly installed on the RV roof.
- Aesthetic integration: With a low profile, they blend seamlessly with the rooftop.
Cons:
- Lower efficiency: Flexible panels typically have a lower conversion efficiency compared to rigid panels.
- Durability concerns: They are generally not as robust as rigid panels, are more prone to physical damage, and tend to have a shorter lifespan.
Rigid Solar Panels
Rigid solar panels are the most common type of solar panels, usually referred to as glass laminated solar panels, and offer higher energy conversion efficiency and longevity.
Pros:
- High efficiency: provides higher energy conversion rates, allowing more power to be generated for the same size.
- Durable: Rugged construction, more resistant to harsh weather and physical impacts.
- Long lifespan: rigid panels typically last longer than flexible panels.
Cons:
- Heavier weight: requires a stronger support structure to carry it, and you need to seek the help of a professional van solar installer.
- Complicated installation: may require drilling holes or the use of complex fixings, which can cause damage to the roof.
- Doesn’t adapt to curved surfaces: not the best choice for curved roofs.
Rigid solar panels are suitable for class A motorhomes, which usually have a large, flat roof area suitable for installing more efficient rigid solar panels; fifth wheel trailers, which offer extensive roof space ideal for installing multiple rigid panels to meet high energy needs; and travel trailers and toy haulers, where the roofs are generally flat and sturdy, capable of accommodating rigid solar panels, providing a stable and efficient energy supply.
Choose from Sungold: Flexible or Rigid?
Choosing the right solar panels is a crucial step in equipping your van or RV for off-grid adventures. With the increasing popularity of sustainable travel, both rigid and flexible solar panels offer unique benefits suited to different needs. Rigid panels are valued for their durability and efficiency, while flexible panels are excellent for fitting curved surfaces and reducing weight.
Understanding these options is essential for selecting the best solar solution for your journey. Let’s compare two models from Sungold Solar — the SGD-M2-250W and the SG-TF-M2-270W — to determine which might be right for your vehicle.
| Feature | SGD-M2-250W (Rigid) | SG-TF-M2-270W (Flexible) |
|---|---|---|
| Product Image |  |
 |
| Maximum Power (Pmax) | 250W | 270W |
| Voltage at Pmax (Vmp) | 27.6V | 41.8V |
| Current at Pmax (Imp) | 11.32A | 6.46A |
| Open-circuit Voltage (Voc) | 23.4V | 48.9V |
| Short-circuit Current (Isc) | 10.69A | 6.78A |
| Module Efficiency | 22.00% | 22.7% |
| Weight | 13.56 kg | 4.73 kg |
| Dimensions (mm) | 1420 x 880 x 35 | 1790 x 765 x 3 |
| Waterproof Rating | IP65 | IP68 |
| Warranty | 10-year, 25-year service | 6-year, 20-year service |
| Certifications | CE, ROHS | CE, ROHS |
| Maximum System Voltage | 1000V DC | 600V DC |
| Temperature Coefficient (Pmax) | -0.38%/°C | -0.35%/°C |
Key Differences:
- Flexibility: The SG-TF-M2-270W is a flexible panel, allowing for installation on curved surfaces with a minimum radius of 1m. It’s particularly light, making it ideal for applications where weight is a concern.
- Efficiency and Power: Both panels offer similar efficiencies, but the SG-TF-M2-270W provides a higher maximum power output.
- Durability and Waterproofing: The SG-TF-M2-270W has a higher waterproof rating (IP68), suggesting better performance in wet conditions compared to the SGD-M2-250W’s IP65 rating.
- Warranty and Lifespan: The SGD-M2-250W offers a longer warranty and service life, indicating it might be a more durable option over the long term.
Sungold Solar is a company specializing in the development, production, and distribution of high-quality solar energy products, with a particular focus on RV applications. RVers, who often travel outdoors or in remote areas, have a high demand for reliable and efficient energy solutions, and Sungold’s solar solutions are designed specifically for RVers to provide an environmentally friendly, convenient, and stable energy supply.
Feel free to contact us for more information on van solar panel pricing and more specialized information on van solar installations.
