I think you are right. The only issue I see with the electric units is the "system integration" isn't what people are used to. What I mean is, you have a cord laying across the pool deck, versus the nice connection point to the water powered pool sweeps. It seems minor, but I think this comes into play. If there is a more efficient pump that just drops in, saves some power, and allows people to not "change" their habits/system, I would think the country could save some serious energy. Anyway, I'll take a look at the electric sweeps. They seem maintenance intensive and flimsy for the cost.