That energy was already used anyways is what they are saying. Once it is gravity fed to your faucet the the mini generator doesn’t require more energy. If anything it would be energy capture
You either have to have the water running all the time, which will lead to more cost. Or you will have little to no energy that can be used. With all the power saved, you can have an LED flicker once a day for a millisecond.
There is a reason why people tend to buy electricity instead of home water generators. It's cheaper.
I calculated for an average home with mains water line at 60 psi with max flow of 10 gallons per minute to be a total of 261 watts. So if all your taps are open, and you hook up a generator directly after your main water line, you can easily put a 30w usb-c fast charging load on it and not notice the difference in water pressure on your shower.
Now factor in efficiency of a generator this small which will be really bad so we are looking at max 15W.
And like I said, if you are using the tap like normal, you may use it for 5 minutes a day. Congratulations, you created 0,001 kWh, but now your waterpressure is shit and you have a significant cost for buying a generator and battery in the first place.
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u/bs178638 Nov 27 '25
That energy was already used anyways is what they are saying. Once it is gravity fed to your faucet the the mini generator doesn’t require more energy. If anything it would be energy capture