I have one of the last Bionx systems installed on a road bike of mine. It is neat but overall I think electric systems are better suited to >2 wheel recumbents. That is because the weight of the battery system means that you still expend a considerable amount of energy just balancing the bicycle upright. That and the lowered efficiency overall.

So thoughts on how to go about this? I'm thinking a 2x1 trike (because I only have 1 bionx wheel) I guess with a rack over the rear wheel and maybe a cargo area for utility. Otherwise, there don't seem to be many recumbent manufacturers.