woo man, 2000watts is a bit much for 14 by 14ft. you may only need one of those lamps, but the more the marrier. it's pretty hard to give a cannabis plant too much light. the most common problem with too much light is too much heat. utility bill will be a lot higher, especily during the veg. phase. i would guess a buck or two a day. you can buy timers for your fans. if you want to go all out their are some really nice climate control timers that you can set your fans, co2, temp, and humity all at once or you can go the cheap way and buy some more light timers(be shure they can be cut on and off several times a day)and use them for your fans. alough with that much light you may need them on the entire day. remember to cover the smell of your exuast fan so not to alarm your neighbors.