just get a cumming power 375kw generator...and some deisal fuel.
Let's say you've got 50,000 square feet - each 1,000 watt light is going to cover maybe 25 square feet each - you're going to need 2,000 lights - that's 2,000,000 watts alone - plus the extra wattage the ballast consumes plus pumps, fans, etc etc etc - how come it's so hard for most in this thread to really grasp the concept of how BIG this operation would be........and that's just going with one layer of flat gardening. If you're going to go up and do multiple levels or stacked rotary gardens, those figures would skyrocket.
Cost per kilowatt in the bay area is around $0.239 - that's $239 per megawatt (million watts) - if you're running just that lowball figure of 2 megawatts, you're looking at $239 per hour at least 12 hours per day - that's $2,868 per day, that's $86,040 per 30 days, that's $1,046,820 a year - and that's on the low, low, low side. Realistically speaking, you're really looking somewhere in the neighborhood of spending $3,000,000 a year just for electricity. That doesn't include rent or property taxes, supplies, personnel, etc etc etc - this would be an ENORMOUS operation if done efficiently.