Here's a quote of what I tried to post to the youtube message board for the x-power site.

Quote
This is nothing but a power correction capacitor- it may reduce peak current as measured on a clamp ammeter, but is going to do NOTHING to reduce overall power consumption as measured on a typical residential home kWh meter.

Marketing this towards industrial users who have more complex meters and are charged per power factor is one thing, but marketing this for home use on the claims that it will reduce electric bills is completely fraudulent.

SURPRISE, he moderates comments. Guess my comment there isn't going to show up, nor are anyone else's.