Part of the thought was to also reduce transport cost.  So if you have effectively the harvest and distribution localized one would reduce footprint in other ways.<p>That being said I&#x27;m not saying &quot;expensive urban rooftops&quot; are where we should be doing this.  I was simply suggesting there are other changes afoot that are, for example, increasing yield.  Any location will have pros on cons such as locality, cost, infrastructure, space reuse, etc.