This Ukrainian guy has been trying to develop his home brew solar focusing system to power homes on the cheap for the past 10+ years.
cross-posted from: https://lemmy.world/post/6019065
Some of this stuff would be very easy to copy or modify.
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Yes. been following his work for over a year now. I am in the process of building my house but hopefully next year I will have more time to work on energy side of things. I plan to build solar collectors similar to the one from videos where you concentrate sunlight using mirrors and heatup oil. If I manage to get good results and warmup the oil to over 100C (400C should be possible), I plan to build sand-battery in the ground.