Wie viel Power hat ein Solarmodul?

That is a conventional solar panel. Many do not really trust such a solar module to do anything, especially not with such modest weather as we have today. And then there is also the rumor that more energy is used for the production of a solar module, than a solar panel can ever give up again. That's reason enough to make a video about this topic. That is why we are devoting ourselves today to the question: How much power does a solar module have? Let's first clarify the question of manufacturing energy. It takes around two to three years for modern solar systems to until the energy comes back in that was used to make it.

From then on, the system is in the plus. Let's build a solar system in southern Europe, then this period is shortened because from the same solar system more energy comes out due to the higher solar radiation. It only takes a good year there until we can use solar energy to bring in the manufacturing energy again. The rumor that we need more energy than a solar system can deliver is far-fetched. There is definitely nothing to it. Now we turn to the question of how much power such a solar module has. The nominal electrical power of such a solar module is somewhere between 250 and 350 watts. You can get from a good 300 watts today certainly run out with high-performance modules. This is what a solar module delivers but only in perfect sun conditions, that is, in midsummer, when we have clear blue skies. Under these conditions, the sun throws us up to 1000 watts per square meter from the sky.

1000 watts, that's about the power which such an immersion heater, a small hair dryer or a small toaster has. And that's what we can expect from the sun per square meter. Now we have significantly less of what the sun gives us. And we can just look it up on the internet. We have a nice weather site on the University of Technology and Economics in Berlin wetter.htw-berlin.de This page shows us that we currently only have 100 watts per square meter. That means: just ten percent of a perfect sunny day. Then, of course, a solar module only delivers ten percent of its output. That's rather modest what most people mean. You can't even imagine 1000 watts per square meter in such weather. And we don't even have to wait for the sun and stay here for a few days. We have 1000 watts per square meter in our laboratory, a solar simulator that can deliver that. And now let's take a quick look at it. Here we have our solar simulator with high-power lamps.

And in the device we can really simulate a beautiful sunny day with full irradiation 1000 watts or one immersion heater per square meter. And to show that, I'll start the device and turn on the lights. Now that the lamps are burned in have we really achieved full irradiation. 1000 watts per square meter, that's what I wanted to show you. To do that, I have to protect my eyes first. And then let's take a look at the device to see what 1000 watts per square meter really is. It's hard to believe what kind of power the sun has. So don't underestimate the sun. We have a lot more power here than one would expect the sun to do. In the sun simulator we saw what 1000 watts per square meter mean. When we have this full sunlight on the module, then it actually delivers around 300 watts of electrical power. With the humble weather we saw outside it's just ten percent, that is 30 watts.

Now we have to see what has been seen over the year is to be expected from such a solar module. And if we align this solar module optimally towards the sun, then such a solar module can deliver an average of 14.4 percent of its output here in Berlin. That would be 43 watts. But the solar module then delivers this 24 hours a day, 365 days a year. Of course, this is also a bit unusual for a solar system: 24 hours. We have no sun at night. Let's turn off the night then it is around 29 percent of the performance, what a solar module delivers on average per day and that would be 86 watts. Many definitely think that this is still placid and modest. But whether that's really that little We’re going to do a little experiment here in the laboratory in a moment look at a pedal generator. We have our pedal generator here. We took a 35 year old bike and clamped it here. And there's a little generator back here which we can set in motion by pedaling. It supplies electrical energy. And we feed this into the electrical grid via a solar inverter. In other words, with this bike we can now directly replace the solar module.

And now we'll just have a look how strenuous it is to generate the stated values ​​for the solar module. And because it's exhausting, I've already taken off my jacket. And of course we also have to pay attention to safety. And then we can start our experiment right away. Now the inverter has connected to the grid, and I'm right here at the feed. My muscle strength goes into the network here. The inverter is now slowly increasing its output.

That means I have to pedal harder all the time to increase my performance. We are slowly approaching the first stage. 10 percent power, that would be 30 watts, which the solar module delivers. I've roughly achieved that. It's still okay. But I have a lot of respect for what the solar module delivers here. The next level is slowly being reached. I have to pedal 43 watts so that I have the daily average output.

That means what I'm kicking here now I would have to do this around the clock, 365 days a year, 24 hours a day to replace the solar module. The next level is going to be harder to reach. I have to work hard to generate 86 watts. That is what the solar panel would deliver 365 days, 12 hours a day. And then I can already say, I don't think I would be able to do it for even one day, 12 hours straight. My respect for the solar module increases with every step I pedal here. If I should trample on top performance now, then I would have to provide 300 watts of pedal power here.

I've tried this a couple of times. At 200 watts I lose my strength at some point. In principle, it is impossible to really hold out for a longer period of time. I'm really happy that we have a solar module here, what those 300 watts when the sun is shining, relatively easily from the hip without exerting oneself and sweating and having to struggle delivers. And I can sit nicely on the terrace and enjoy the solar power and make me a delicious coffee. A photovoltaic module is usually about lines and an inverter coupled to the electrical network. And we lose on the way some of the power this solar panel provides. Then we have pollution and shading and other losses. Over the year, around 20 percent of the solar module's energy is consumed lost on the way to the network. Nevertheless, a solar module, if we align it optimally in Berlin, that's about 37 degrees to the south, Feed around 300 kilowatt hours of electrical energy into the grid. That is quite remarkable. I wanted to trample on the pedal generator I would have to deliver the daily average of 86 watts for about three and a half thousand hours.

That would be pretty exhausting. Humans also have an efficiency of around 20 percent, like solar modules. You'd have to eat a lot to be able to kick so much at all. If we just look at a packet of spaghetti: Such a packet delivers one kilogram of cooked spaghetti and has around 1,400 kilocalories. We'd have to pedal for three and a half thousand hours with 400 kilocalories and Consume 1.4 million kilocalories. And for that we would need around 1000 kilograms, i.e. a ton of spaghetti per year, to be able to pedal so much at all. Most of them don't just have a single module when they have a solar system. There are 42 solar modules on the roof of my house. And if I wanted to trample that, then I would need a whole bachelor's seminar what I would have to bring to my home, set up 42 pedal generators, 42 tons of spaghetti that we would have to buy and cook every year.

And I'm glad that I really have a solar system here, who does it all for me calmly and calmly. Nobody has to pedal here. And the solar modules have considerably more power than you really think they can be. The question that you have to ask yourself again at the end: Do you already have a solar system that works for you? If not, think about it. If you liked the video, the spaghetti or the solar panel, then just put a like. I would be happy about it. Otherwise we have on my video channel many more videos on the same topic. And if you don't want to miss a new video, you can simply subscribe to the channel. See you next time then..

You May Also Like