[Shivetya]

well normally farms cannot grow up, skyscraper style. Also, situating the building properly should allow for some of it to also be used for power generation. Then lets go further, make it tall enough that the warm air rising from the bottom could be used to generate power.

[idibidiart]

right, that's the point of stacking and other structure-wise efficiency enhancement... I didn't go as far as the warm air rising =)

[idibidiart]

see this other structural pattern for maximizing use of available light (be it LED light or sun light)

http://online.wsj.com/news/articles/SB1000142405297020355030...