Electronic – Convert VAh to kWh


Sorry, this might be a stupid question as I'm not an electrical person.
I'm analyzing an electricity consumption dataset and the consumption is measured by apparent energy (VAh).

How do I convert this VAh to kWh as normally seen on a power bill? Or are they the same thing, just different ways to call?


Best Answer

You need to know the power factor, which is highly depedant on your application. Then you simply use this formula: $$ P = S * PF $$ where

P = actual energy
S = apparent energy
PF= Power Factor

This answer tells us, that power factor in general public households can be expected to be greater than 0.9.