This is not a special water pipe, I’m talking about the ordinary water pipes that is used by a city to distribute tap water. And, this is not the small pipes around the house, I’m talking about the huge pipes that engineers made for water distribution in the city.
Why water pipes? Water is pumped through these pipes so we could use it. It uses pressure to push through water and uses electricity. So, how can it produce electricity?
Just like windmill generators, it uses the same concept on generating electricity by using a motor that generates current when the armature inside the the turbine rotates between two polar field magnets. Now, by using the same turbine, you can put this to apply it on water pipes to generate electricity. And, you are talking about 24-hour, round-the-clock electricity for the whole city.