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Important note about the solar modules: The company Tenka Solar GmbH has its headquarters in Munich and is a subsidiary of JY Capital, the solar modules are NOT produced in Germany. In this video I show you how I can easily and legally upgrade my 800 watt balcony power plant Yuma Flat 800 Pro to 1600 watts and thus triple my yield. Here are the links to the company Yuma* in Cologne and amazon.de*: https://yuma.de/?ref=TVSOLUTION Update from May 2024: With the voucher code TVSOLUTION, which you can enter in the shopping cart, you get an attractive immediate discount of 30 euros! Tool for solar panel cable PV system solar panel cable, 1 pair https://amzn.to/3CZi1r6 The links to Yuma and amazon.de are affiliate links. If you buy through them, I receive a small commission. Of course, you don't pay any more for this. Thank you very much! Don’t forget to like the video, comment and subscribe to the channel.