I just replied to your other comment, but even a local network can't feed a city. Let's do some more math.

Los Angeles has about 18 million people, and on average they take about 2 acres of land to feed (it can be less for vegetarians, but lets assume they are just normal people here)

That's 36 million acres needed, which is about 56,000 square miles, which is an area of 280 miles by 200 miles of nothing but farmland.

You quite literally can't even feed Los Angles with a 100 mile diet, even if it was surrounded by nothing but farms (which it isn't)

In fact, California only has about 25 million acres of farmland in total (8 million irrigated, and the rest for animal grazing)

Source local food sounds good, but we import food for a reason. Cities require a ridiculous amount of farm land to feed.

You could have 5 floors, and it still wouldn't be enough. You could have 30 floors and it wouldn't be enough.

I don't think you understand the scale of farming to human. Even if you're entirely vegetarian it's on the order of 0.5-1 acre per person to grow the required food. That's 20,000-40,000 square feet. Even if hydroponics were involved and cut that by a factor of 10, you'd still be at 2000 square feet per person. A typical grocery store is 25-50,000 square feet, so let's go with the most generous and say 5 floors of 50,000 square feet you could produce enough food for.... 125 people.

The math doesn't math. No reasonable amount of food growth is ever going to be possible inside a city.

My vision is

Ground floor: Cafeteria / service kitchen

2nd Floor: Production Kitchen / food packaging

3rd Floor : Aquaponics & fertigation

4+ : greenhouse.

It is a solution in search of a problem. And it would create far more expensive problems than it proposes to solve. The Soviets already did this kind of thing--the same Soviets who deliberately starved millions to death with manufactured food shortages.

Lol. Welcome to 'growing seasons'

@TORFdot0@lemmy.world

The school cafeterias could remain open 24/7 for everyone. Sure, taxes would go up about 50% or so, but free sloppy joes would be well worth it, amirite?