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Last time I calculated the return on investment of a photovoltaic power plant, today we will look at specific numbers for a specific power plant of our colleague Pletron. A few notes: The return will be better (shorter) if the power plant has an optimal size (power). The return will be better if you consume all the electricity that the power plant is capable of producing. When no electricity remains on the roof, so to speak. You do not always have ideal conditions (direction and slope of the roof) and nothing is shading you, all of this will be reflected in the return. If you charge an electric car, the return will improve. You will not produce much in the winter months. Calculate for yourself how a possible subsidy will affect the return. I would like to thank Zdeněk / Pletron, the author and operator of the online games Pán Hradu and Dark Elf https://www.panhradu.cz/ for their cooperation. Registration and playing are free! Vidlák's DIY challenge. If you have a useful machine of your own design at home (stove, minitractor, PV generator, perpetual motion machine) and you want to show it off to the world, we can make a video about it together... Let me know, the email is listed at the bottom of the page. / @vidlak001