huh?
How many kW does it take to run a light bulb for 6 months? is that your question?
What size light bulb?
The number of kWs do not depend on time. If it is a 100 watt bulb, it will use 0.1 kw of power. Initially, after a hour, after 6 months, it is still using 0.1 kw of power.
Perhaps you mean kw-hours? which is a unit of energy.
A 100 watt bulb will use 0.1 kw-hr in one hour, 2.4 kw-hr in one day, 72 kw-hr after one month, and 432 kw-hr after 6 months of continuous use.
