I love the simplicity of this! From what I understand the principle is basically to use solar energy to pump up water into an overhead water tank during the day, and let the water running down from the high tank at night, power a turbine to generate electricity at the night. Brilliant! This way, we avoid substitute environment polluting batteries with clean hydro energy.
I’m not technically qualified to do such an installation myself. But I think there may be some limitations with the solar equipment I used in my installation.
Basically in India, our public water supply has insufficient quantities of water. So the water supply has low force and will barely reach taps on the ground floor. So each house has a sump at ground level to collect water from the public supply. The house owner then pumps it up to an overhead tank which circulates water to all taps in the building.
Now the guy who installed the solar panels told me that it doesn’t have enough power to run water pumps, washing machines, kitchen mixies, etc. He said all these equipment require an initial high load to get started, and the solar panel system I have is incapable of providing this initial power surge. To clarify, ‘my $550 solar system has three solar panels of 100 watts each that charge a 850VA battery via an invertor (30Amp/12V charge controller), and can generate about 1–3 units of electricity a day.’
Maybe the solar panel systems that are available to you are higher powered. But thank you for making me aware of this, and I will definitely keep it in mind when I do my next solar system.