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suman suhag's avatar

I think it makes sense to build in cold climates, but not the ocean.

Regardless of what you pay for electricity, all of it turns into heat.

In warm climates and in the ocean that heat is just waste that must be dumped into the environment at additional expense. And the ocean has the additional disadvantage that the data center must be water tight and expensively maintained. People can’t breathe underwater. Computers don’t work underwater. And mussels and barnacles grow on all surfaces under the sea, including the heat exchange surfaces of a submerged data center. So any installations under water are going to be more expensive to build and maintain than one on land.

But in cold climates the heat is a valuable resource that can be sold, eliminating the cost of paying for that energy in the first place. For example, has no one ever thought of using a data center to heat a greenhouse? Seems like a no brainer to me, when the only alternative for fresh winter fruit is importing it from thousands of km away.

All you have to do is raise the humidity of the data center’s intake air to 25% (simple and cheap, because a spray of water will evaporate on its own), and then pass the exhaust (heated) air into a green house (with a second uptake in humidity for the plants). Modern LED lighting is very energy efficient and will provide light for growing fresh tomatoes in Winnipeg in January.

Oh, who am I kidding. In Canada, you would grow cannabis and make more money selling weed than the data center could ever make. Come to think of it, you could dry the buds on top of the data center’s computers to raise the humidity to a safe level.

So building where electricity is cheap and the waste heat can be sold makes perfect sense. So build in places like Manitoba and Quebec, both of which have brutal winters and are mass exporters of inexpensive, non-polluting hydroelectric power.

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