Energy Return on Investment (EROI) Comparator — 2D Flow Diagram

Behind every energy transition debate sits one deceptively simple ratio: how much energy a source delivers back for every unit of energy spent building, fuelling and running it. This 2D diagram renders that ratio as a literal flow — a steady stream of particles carries invested energy into a converter, and a second stream, scaled directly by the selected source's EROI, carries the returned energy up into a silo whose height makes the gap between fossil, nuclear, hydro, wind, solar and biomass generation immediately visible. Pan and zoom the diagram, switch between unbuffered and storage-buffered methodologies, compare all seven sources at once in the bar chart, and read live net-energy and energy-payback numbers computed from the same formulas used in real energy-transition analysis.