Read that and got to this ludicrous claim:

> The inverter models are marginally better at converting the total power they draw from an outlet (the apparent power) to useful work (the active power). However, your residential electricity bill is calculated based on active power use, so an inverter microwave won't save you any money.

If any power company has the ability, much less the inclination, to not charge you for your appliances waste heat that would be news to me.