The inventor of the Railroad Windfarm was taught Ecological Engineering by Dr. John Todd when the field was in its infancy. Ecological Engineering is the art and science of designing and building ecosystems to perform work. Engineered ecosystems are designed to evolve to use a particular wastewater as feedstock.  
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As Founder and Executive Director of the non-profit Aquatic Restoration Technologies, the inventor of the Railroad Windfarm created several engineered ecosystems including an industrial zero discharge subsurface marsh for petrochemical wastewater treatment and a residential graywater treatment and reuse system.
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Ecological Engineering is applied to trains to yield the Railroad Windfarm. It's the technological equivalent of an engineered ecosystem. Instead of converting organic wastes to resources it harvests and recycles wasted renewable energies.
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One Ecological Engineering design principle is using a minimum of 4 separate but linked ecosystems. The Railroad Windfarm mimics engineered ecosystems by using several technologies linked together by computer. The linked technologies are aerodynamics, batteries, regenerative brakes, solar panels, trains, and Vertical Axis Wind Turbines.   
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The underlying premises of the Railroad Windfarm are, harvesting the kinetic and solar energies of trains, and almost all trains run on electricity generated by diesel turbines.
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The Railroad Windfarm is a mobile power plant in its own right, but its primary benefit is eliminating transmission lines by transmitting power with railcar mounted batteries. The batteries are charged by the Railroad Windfarm or renewable energy facilities.
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The Patent features 5 railcars. For desalination, electrolysis, and the features, functions, and benefits of over twenty types of railcars see More Options.