What are the dimensions of Ray Balkonkraftwerk panels?
If you're looking to set up your own balcony power plant, one of the first technical details you'll need is the physical size of the panels. The dimensions for the panels in the popular Ray Balkonkraftwerk system are typically 1755mm in length, 1038mm in width, and 35mm in depth (or thickness). Each panel weighs approximately 21.5 kg. These measurements are crucial for planning your installation, as they determine how much space you'll need on your balcony railing, wall, or stand.
Now, let's dive deeper. These dimensions aren't just arbitrary numbers; they're the result of engineering choices that balance efficiency, durability, and practicality for the urban environment. A panel of this size, roughly 1.8 square meters, is designed to capture a significant amount of sunlight without being so large that it becomes unwieldy for a typical apartment balcony. The 35mm profile is sleek, helping it maintain a low visual profile and reducing wind load, which is a critical safety factor when mounted on railings several stories up.
To put this in a comparative context, let's look at how the Ray panels stack up against other common balcony solar panel options. The table below breaks down the key physical and performance specs.
| Feature / Model Type | Ray Balkonkraftwerk Panel | Generic 380W Balcony Panel | Compact 300W Panel |
|---|---|---|---|
| Dimensions (L x W x D) | 1755 x 1038 x 35 mm | ~1760 x 1040 x 35 mm | ~1680 x 1000 x 30 mm |
| Weight | ~21.5 kg | ~22 kg | ~18 kg |
| Typical Power Rating | 380 Watts | 380 Watts | 300 Watts |
| Cell Technology | Monocrystalline PERC | Often Polycrystalline | Monocrystalline |
| Frame Material | Anodized Aluminum | Aluminum | Aluminum |
As you can see, the Ray panel's dimensions are fairly standard for a full-power 380W module. The consistency in size across major brands is partly due to manufacturing efficiencies, but it also means that mounting systems and brackets are often interchangeable. The weight, at 21.5 kg, is substantial. This isn't a flimsy piece of equipment; it's a solid, glass-fronted module designed to withstand hail, snow loads (up to 2400 Pa is common), and high winds. That weight is a direct trade-off for the 25 to 30-year performance warranty these high-quality panels carry. You need a robust mounting solution, like the adjustable bracket system designed for it, to handle that mass securely for decades.
Let's talk about what these dimensions mean for installation and energy yield. The surface area of about 1.82 square meters is your active solar capture zone. With high-efficiency monocrystalline PERC cells packed into that area, the panel can convert more sunlight per square meter than older technologies. In practical terms, in Central European sunlight, a single 380W panel in the Ray Balkonkraftwerk system can generate between 280 and 340 kilowatt-hours (kWh) of electricity per year. That's enough to power a high-efficiency refrigerator year-round, or to run your laptop, LED lighting, and router continuously. The exact output depends heavily on your specific conditions: the compass direction your balcony faces (south is ideal, but east and west work well), the tilt angle, and local shading from buildings or trees.
The 35mm depth is another smart design choice. Thinner profiles exist, but they often compromise on the durability of the backsheet or the rigidity of the frame. This 35mm build uses a sturdy aluminum frame that protects the laminated solar cells and provides a secure clamping edge for the mounting hardware. When you look at the side profile of an installed system, this slim depth helps it look integrated and tidy, rather than like a bulky add-on. For renters or those in buildings with strict aesthetic rules, this can be a deciding factor in getting approval from a landlord or homeowners' association.
Planning your layout is the next step. Most balconies can accommodate one or two of these panels. With the dimensions in hand, you can use a tape measure to map out your space. Remember, you need to account not just for the panel itself, but for the mounting bracket's footprint and the necessary clearance for cables and connectors. The system is designed for vertical or horizontal mounting on railings, walls, or flat ground stands. A common and space-efficient setup for a standard balcony railing is to mount two panels vertically side-by-side. This would require a railing section about 2.1 meters wide (allowing for a small gap between panels and bracket overhang), which is common on many modern balconies. The adjustable bracket, which you can learn more about by checking the official ray balkonkraftwerk product page, is key here. It lets you fine-tune the tilt angle—typically between 15 and 60 degrees—to optimize for your latitude and seasonal sun height, squeezing every possible watt-hour from that 1.82 square meter surface.
Finally, consider the logistics. A panel measuring 1.75m by 1.04m is a large object. Can you safely get it up to your apartment? Do stairwells or elevators have the clearance? Most suppliers deliver the panels via freight service, and the driver will typically get it to your building's entry point. Having a friend to help maneuver it is highly recommended due to the size and weight. Once on the balcony, the actual mounting process with the right hardware is straightforward for a competent DIYer, often taking just a couple of hours. The dimensions are the blueprint; from there, it's about secure mounting, correct electrical connection to the micro-inverter, and plugging it into a standard outdoor socket to start offsetting your power bill immediately. The physical specs are the foundation of a system that turns your balcony from a mere space for plants into a personal, silent, and clean power station.