The conventional step-up grid transformer electromagnetically connects the generator to the grid or load directly which causes the generator to produce Generator Armature Reaction which requires an 80% increase in input energy and result in an 80% increase in waste over the no-load condition. The patented Bi-Toroid step-up grid transformer electromagnetically isolates the generator from the grid or load while reversing Generator Armature Reaction which results a 4% DECREASE in input power and a 4% DECREASE in waste over the no-load condition. Overall cost savings of 84% to the energy producer, consumer and planet.