Follow up (Part D) to The Battery Problem where John addresses some more follow up about Flywheels as a form of energy storage, the challenge of disposing of or recycling dead solar panels in 40 years and realistic expectations of DC efficiency.With Ben Alexander and John Chidgey.Related Links: Flywheel Energy Storage Drag High-temperature superconductivity Leidenfrost effect Flywheels: Reinventing the wheel | The Economist Solar System Design – Tech Distortion Recycling Methods for Used Photovoltaic Panels | WaterShed at the University of Maryland | U.S. Department of Energy Solar Decathlon 2011 Aluminium recycling Glass recycling Dielectric Testing (PDF) IEEE Smart Grid Experts Roundup: AC vs. DC Power - IEEE Smart Grid DC-to-DC converter AC Adaptor Support Causality on Patreon