Because no Poco that I know of penalises domestic customers for the phase shift caused by running electric motors in the home. That's why we have a grid - it self-balances by averages. Large industrial and office users are encouraged to balance out their shift by arranging balancing of loads from their motors and fluorescent lighting by phase shift penalties. Thus this device is useless in the home, as already discussed here several times: you only pay for watt you use!
