Your numbers are off, so don't exaggerate.
My November Jupes use 875W each and hash at about 675 GH.
My Ants use ~380W each and hash at about 190GH, so the power usage differential is not as bad as you made it out to be.
There is no way 3 Ants use 1500W unless you have a really crappy power supply. They use more like 1200W at the wall.
Ants use about 2W/GH at the wall. November Jupiters use about 1.3W/GH at the wall.
I said october jupiter, it is pulling 750-780w and running 650 -640GH per second.
My unlocked Ant gives 180GH for 380W a friends clocked one gives 205GH for 480w so my numbers are not to far off, just rounded up/down.
edit: NOVEMBER jupiters were always terrible GH/W ratio in my opinion, hence why i said October.
When you got your NOVEMBER i got an upgrade board, which gave me 700GH (5 x 140) for about 760w, better performance than you got.
Edit: I am completely sorry, I did not even say October Jupiter, I did say an OC jupiter though and november can not be OC yet as far as i am aware.
edit: if anyone wanted proof. KnC october 4 board hashing at 639gh/s drawing 670w, including the control board it reads at 750w