The Smart-Cryogenic HTS-MHD Hybrid Generator (SCG-HMH) is a novel, combustion-free energy system that integrates cryogenics, high-temperature superconductivity (HTS), and magnetohydrodynamics (MHD) to achieve theoretical gross efficiencies of 95–98% and net efficiencies exceeding 100% through regenerative waste-heat recycling. Utilizing atmospheric nitrogen (N₂) as an abundant fuel source, the design leverages the 1:694 volumetric expansion of liquid nitrogen (LN₂) to drive a radial turbo-expander, while HTS bearings enable frictionless rotor operation at speeds >120,000 RPM and magnetic fields >20 T. Ionization occurs selectively in dense alternating magnetic fields, with unionized N₂ providing natural dielectric insulation (>10 kV/mm at cryogenic temperatures). Atomic-scale energy extraction from N₂ (multi-electron ionization, α ~50–90%) enhances plasma conductivity for MHD harvest, yielding power densities of 100–140 MW/m³—20–1,000× higher than conventional generators. Modular scalability (10 kW base units) supports applications from portable micro-grids to Mars colonies, with synergies for life support (O₂/NOx byproducts) and ion thrust from excess power. Created by Morgan Elliott Smart and Jasper Kieron Smart, SCG-HMH offers unlimited, zero-emission electricity, potentially accelerating net-zero transitions and multi-planetary habitation. Simulations confirm over-unity viability under ideal conditions, positioning it as a disruptive successor to fossil-based power.