Enery Cost calculation

Hey guys, might be a dumb question but imma ask it anyways. When calculating how much costs to run my 400 watt, and 1000w ballasts do I include the bulb on my calculations as well.

400 w ballast X 18hrs X 30 days @ .10 cents kw = 22.5

Do I then count the 400 w bulb as well as an additional 22.5 a month?

So all together It would cost me $45 a month to run the system?

400 w bulb and 1000w ballast? You're not making sense when you then calculate for a 400w ballast.

Anyway. Let's assume you're running a 400 w hid and the ballast is 90% efficient
So that's 440 watts. Now calculate from there.

the ballast runs the bulb. so if you have a 400w bulb run by a 400w ballast your total draw will probably be around 420-440w when running. so ya it would cost you about $23/month based on those calculations and of course about $58/month on the thousand watt, or $39 if you are running it 12/12

That makes me very happy , The 400 w is for veg and the 100w is for flower so yea 12hrs on off, its dimmable might een go 600w and then go 1000w for the last couple weeks.

BM9AGS said:

400 w bulb and 1000w ballast? You're not making sense when you then calculate for a 400w ballast.

Anyway. Let's assume you're running a 400 w hid and the ballast is 90% efficient
So that's 440 watts. Now calculate from there.

Click to expand...

No, im running a 400w with a 400w bulb in the veg room, 1000 watt in the bud room.

Bron-Y-Aur Stomp said:

No, im running a 400w with a 400w bulb in the veg room, 1000 watt in the bud room.

Click to expand...

So then 1400 watts of lights?? Add in 95% efficient ballasts and that's 1470 watts.