Cost of about 350 watts cfl per month

How much would u expect around 350 watts of cfl light on 16-8 a month would cost in the uk just trying to get a rough idea of how much this would all cost, does using a cfl cost less than hps lighting etc

168 KWH per month - you need to look at your bill and see what your cost per KWH is and multiply by the 168 KWH used per month.
At my rates you will use about $16.00 per Month.

Now is this 350W actual CFL? Or something like you have 55W CFL = 250W Equivalent of a regular bulb

This gets asked three times a week...

350 watt of cfl not eqiuvenlent

350 watts is 350 watts whether hps or cfl so 16 x 350=5.6 kw aday x 31=173.6 kw amonth i get charged 10p kw so that would be £17.36 amonth