These should come in handy in retrofits: https://www.nextbigfuture.com/2009/01/365-megawatt-superconducting-motor.html https://www.nextbigfuture.com/2009/01/365

These should come in handy in retrofits: https://www.nextbigfuture.com/2009/01/365-megawatt-superconducting-motor.html https://www.nextbigfuture.com/2009/01/365-megawatt-supercond....