I have a friend who is getting investors to help start up a hydroponic system in a 200,000 square foot warehouse. He is using the new LED grow lights and growing troughs on multiple tiers. He wants to provide the fresh produce for restaurants. Here is a starting point to learn about LED type grow lights that won’t run up you electricity bill and will allow you to grow produce faster, hydroponically:
http://www.advancedledlights.com/
That is the type grow lamp I have.