Hydroelectric power converts a drop and flow of water into electricity through a turbine and generator. This piece works through the output equation, turbine selection, dam, run-of-river, and pumped-storage plants, governors and grid regulation, fish passage and the environment, and digital twins and variable-speed pumped storage — covering both the equipment and the operations.
September 4, 2026 Power Engineering PrimerGeothermal power is a stable energy source sitting right under the feet of volcanic Japan, yet even though the country ranks third in the world for resource potential, installed capacity captures only a fraction of it. This article diagrams the difference between flash and binary systems, the risks of resource assessment and drilling, the regulatory tangle around hot springs and national parks, and next-generation technologies such as EGS and supercritical geothermal.