The Mechanicville Power Station Built in 1897 — The Generators Never Stopped

In 1897, a concrete powerhouse was being lowered into the Hudson River at Mechanicville, New York — not beside the water, but inside it. The generators being bolted into those turbine pits were designed by a man named Charles Proteus Steinmetz, and if his calculations were wrong, the machines would make that known in a way that could not be mistaken. This video covers the construction of the Mechanicville Power Station and the mathematics that made it possible. You will learn how Steinmetz's 1892 paper on the law of hysteresis — sixty-one pages published in the Transactions of the American Institute of Electrical Engineers — gave engineers a way to calculate energy losses in iron before a single machine was built. That formula meant a generator could be designed in a Schenectady drafting room and trusted to behave predictably twelve miles away on a riverbed. Three things this video examines in detail: what hysteresis actually is and why it threatened early generator design, how Steinmetz and his collaborator Ernst Berg applied that mathematics to the seven 750-kilowatt three-phase generators going into the Mechanicville turbine hall, and what it meant to build a powerhouse that the Hudson River ran through rather than around. The investors were skeptical. The riverbank crowds had no idea what was inside. Steinmetz was watching to see whether the numbers held. Iron & Engine covers the machines that built America — the engineering behind them, the men who ran them, and what was lost when the knowledge left with the men. --- Contact: [email protected] © Iron & Engine 2026 Thank you for choosing to spend your time watching this. We put considerable effort into researching and producing these videos with the goal of providing you value. We know many people are concerned about AI — We want to be upfront: we use it as a tool to elevate the storytelling and create an immersive experience, not to trick anyone or produce slop. When real photographs or sources aren't available, we use conceptual art to fill the gaps. Our goal is to bring you things you never knew about topics you care about. Thank you for your time and your kindness! Attributions: Queltehues Hydroelectric Plant, construction (1).jpg By AndyScott, licensed under Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0). License: https://creativecommons.org/licenses/... https://commons.wikimedia.org/wiki/Fi... Boysen Dam Construction on the Boysen Project - Pick-Sloan Missouri Basin Program, 1947-1952 -throwbackthursday.jpg By Bureau of Reclamation, licensed under Creative Commons Attribution-ShareAlike 2.0 Generic (CC BY-SA 2.0). License: https://creativecommons.org/licenses/... https://commons.wikimedia.org/wiki/Fi... Niagara Mohawk Building (Niagara Hudson Building), Erie Boulevard and Franklin Street, Syracuse, NY (54417849553).jpg By Warren LeMay (from Chicago, IL, United States), licensed under Creative Commons Attribution-ShareAlike 2.0 Generic (CC BY-SA 2.0). License: https://creativecommons.org/licenses/... https://commons.wikimedia.org/wiki/Fi...