Units?
You're using some funky units there, that don't make sense.
The TV is maybe using 0.5w, but not watts per hour, that makes no sense as watts already includes a temporal component.
Not to be confused in any way with kWh, kilowatt-hours, which is most definitely NOT kilowatts "per" hour, but rather an amount of energy consumed, as opposed to watts, which is a measure of power draw.