I have often wondered how to get free electricity at home.
There are many options, but they are very expensive to implement.
Having rummaged in aliexpress, I found not expensive solar panels on 12V. I ordered two pieces.
Link to solar panels.
By connecting the solar panels in parallel, I doubled the charging current.
Then the battery charge controller also picked up from the site.
Link to the controller.
I connect the parallel-connected panels to the controller. Here, all the connections are understandable.
The output from the controller is powered by a 12V battery, as noted on the controller itself.
All battery charging went, respectively, in the presence of sunlight.
Then, after charging the battery, it is necessary to make 220 from 12V.
For this we need an inverter 12-220 volts.
Link to the inverter.
We connect the inverter to the battery and get 220V.
Yes, I agree that the current strength is not enough to start the refrigerator or washing machine. But for a laptop with a Wifi router, 10 hours is enough.
Cost: ~ 1902