Averaging the sawtooth waves:
407 / 4 = 101.75mA * 5V = 508.75mW input
210.5V into 1MΩ = 44.3mW positive output
857V into 1MΩ = 734.4mW negative output
Total output 778.7mW
Maybe I misunderstood the shapes of the graphs, but I don't think so. Perhaps the simulator isn't reporting peak voltage correctly. The values do seem to change when I slow the simulation down, but I don't have the patience today.
