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WWII Bomb Shelter Becomes Hi-Tech Salad Farm
asjk points out a story of how a World War II bomb shelter, situated 33 meters beneath the streets of London, has been turned into a high-tech hydroponic farm. "The growing system uses energy-efficient LEDs instead of sun, no pesticides, needs 70 percent less water than growing plants in open fields, and less energy than a greenhouse." The computer-controlled environment is designed to shorten the growth cycle of plants like coriander and radishes. They're currently only using about a quarter of the gear necessary to fill up the shelter, but they can produce 5,000-20,000 kilograms of food per year, depending on what they raise. Co-founder Steven Dring said, "We've got to utilize the spaces we've got. There's a finite amount of land and we can grow salads and herbs — which start losing flavor and quality as soon as you cut them — in warehouses and rooftops in cities near the people who will eat them. Use the rural land for things like carrots, potatoes and livestock."
The article (or shall I say shameless advertisement) goes out of its way to talk about how much they shower the growing plants with "nutrients," but says not one iota about the nutritional content of the final product and how it compares to organic or conventionally grown produce.
Which nobody is claiming ... what they're saying is, given a finite amount of land, and the fact that nutrients are lost once you harvest and begin shipping ... you can also grow some food close to where the people who will eat it actually live. And you can do it year round.
Efficiency, in this case, includes year round production, shipping, and the ability to have certain kinds of fresh produce without having to ship it around the world.
Unless you have a way to ship lettuce from Peru to London which is solar powered, you're kind of missing one of the points. Local production has its own efficiencies and benefits.
Lost at C:>. Found at C.