While I was looking electricity bill for the first time of the company I work, I was surprised how much they pay. $3000 per month and $5000 during summer. Even it's not during the summer, this 50 employee two story building seems spending much.
I measured usages on computers, I ended up on around $600 including servers a month.
Now when I noticed they have lots of fluorescent lights, 4 lights in on mounting bracket, every 5 feets in the hall way and 4 lights every 2 feets in room. I need to take out 2 of 4 and also maybe recommend to replace the fluorescent lights with energy savings.
I looked at the stroage room, the maintenance guy seems using T8 (32w, Syvinia 2800 lumens ) and T12(40w Philips) lights. Does 32w light actually use 32w all the time?
And each light mounting bracket has two ballasts. The maintenance guy seems he doesn't understand what ballast type is in there and use either T8 or T12 lights. First, I'm not sure if it's safe to interchange light type different than the ballast in the bracket. I think I have to open the cover and see each ballast type in it to find out. If the ballast type is T12, can I use T8 light on it or should I replace with T8 type ballast if I want to replace T12 to T8 light?
I'm not an electrician, but feel there's something we could do to lower the bill.