Originally Posted by Sir.Humphrey.Appleby
I doubt both of these statements. It is cheaper right now to import tomatoes from the southern hemisphere than growing them in greenhouses locally. Transportation is really really cheap over very long distances, and heating is really expensive.
And greenhouses cost a lot less than towers.
Emphasis on cheap RIGHT NOW
. Back in 05-08 when things were crazy food prices inflated a huge amount due to price of oil. The entire rationale of this proposal is that you would have local, year round, cheap produce that would not only cut back on GHG emissions, but substantially reduce dependance on fossil fuels.
Second: heating would not cost a dime in these facilities because all the energy required would be produced on site by burning waste to generate electricity. These proposals are for self-sustaining, off the grid, production facilities.