The Dam is built to retain the water. More electricity is produced if the water is more in the reservoir
bulletSluice Gates: These can open and close to regulate the amount of water that is released into the pipes.
bulletPotential energy in the retained water is transferred into kinetic energy by water flowing through the pipes with high speed.
bulletThe force and high pressure in the water turns a series of shafts in a generator. Spinning shafts in the generator charges millions of coils and magnets to create electricity, which is regulated by a transformer. This is then transported via cables to homes and factories.