We need to talk about the biggest lie in tech: the word “Cloud.”
Whoever came up with the marketing for “the Cloud” deserves a lifetime achievement award in gaslighting. They made it sound so peaceful. You picture your photos, your backup files, and your 47 unfinished Google Docs floating gently in the sky like cotton candy, carried on a summer breeze.
In reality, the Cloud is not in the sky. The Cloud is a massive, windowless warehouse off a highway somewhere, packed floor-to-ceiling with thousands of screaming hot computers that are currently drinking enough water to hydrate a small town.
And ever since we all decided we needed AI to write our emails, summarize our PDFs, and generate pictures of cats wearing astronaut suits, those warehouses have developed a serious fever.
Your Laptop Fan, Multiplied by Ten Million
You know that sound your laptop makes when you open twenty Chrome tabs and try to run a video call at the same time? That jet-engine whirrrrr where the bottom of the keyboard gets hot enough to toast bread?
That’s because computer chips are basically tiny, overly dramatic heaters. Every time a processor does math (and remember, to a computer, everything is math), it pushes electricity through millions of microscopic pathways. That creates resistance, and resistance creates heat.
Now imagine a room the size of six football fields, stuffed with racks of the most powerful, power-hungry chips on Earth, running at 100% capacity, 24 hours a day.
If you don’t cool a data centre down, the silicon literally melts, the servers crash, and suddenly half the planet can’t load Instagram or check their bank balance. For years, giant air conditioners did the trick. Then came the AI boom.
Why Asking a Chatbot a Question Costs a Bottle of Water
Training and running modern AI models takes an absurd amount of computing power compared to regular old internet browsing. The chips get so hot that blowing cold air on them is like trying to put out a braai with a handheld paper fan.
So, data centres switched to liquid cooling… pumping millions of litres of chilled water through pipes right next to the servers, or evaporating water in massive cooling towers to carry the heat away.
Researchers found that having a medium-length conversation with an AI chatbot essentially evaporates about a 500ml bottle of fresh water at the data centre just to keep the servers from overheating. Multiply that by hundreds of millions of people asking AI to rewrite their CV or explain why their houseplant is dying, and suddenly tech companies are competing with local communities for drinking water.
Which led engineers to ask a slightly unhinged question: What if we just threw the computers in the ocean?
Step 1: Put the Internet in a Submarine
A few years ago, Microsoft decided to test this with something called Project Natick. They packed 855 servers into a giant steel cylinder (basically a shipping container cosplaying as a submarine), sealed it shut, and sank it 35 metres deep off the coast of Scotland.
Everyone thought it was a publicity stunt. Instead, it was genius.
First, the ocean at the bottom of the northern sea is naturally freezing, so the water flowing past the outside of the tube cooled the servers for free. No freshwater wasted.
Second… and this is the part that blew engineers’ minds, the underwater servers broke down at one-eighth the rate of servers on land. Why? Because on land, humans are the problem. We walk into server rooms, we bump into racks, we let dust in, and the oxygen and humidity in the air slowly corrode the delicate electronics.
Inside the underwater tube, they pumped out all the oxygen, filled it with dry nitrogen gas, and locked the door for two years. With no humans touching them and no oxygen to rust the parts, the computers lived their absolute best, unbothered lives at the bottom of the sea. (Honestly, locking yourself in a quiet bubble away from people sounds kind of nice. I get it, servers.)
Today, companies in places like China are actually building commercial underwater data centres, dropping massive server pods into the ocean like high-tech artificial reefs.
Step 2: Cut Out the Middleman and Buy a Nuclear Plant
Cooling is only half the headache. The other half is where to get the electricity to run the cooling systems and the chips without collapsing the local power grid.
A single massive AI data centre today wants as much electricity as an entire city of a million homes. Solar and wind are great, but servers don’t take a nap when the sun goes down or the wind stops blowing. They need relentless, 24/7 power.
So Big Tech has entered its Bond Villain era… they are literally buying up nuclear power plants.
Microsoft signed a deal to restart the Three Mile Island nuclear plant in the US just to power its AI servers. Amazon bought a massive data centre campus plugged directly into a nuclear power station. Google and Oracle are investing in “Small Modular Reactors“… basically mini nuclear plants that can be parked right next to a server warehouse like a giant, radioactive generator.
Think about the journey we’ve been on. Thirty years ago, we were excited to send an email over a dial-up modem that screamed at us if someone picked up the house phone. Today, we are sinking hermetically sealed nitrogen tubes to the ocean floor and firing up nuclear reactors so we can ask a chatbot what to make for dinner with half an onion and a tin of baked beans.
Next time your phone tells you your photos are “safely backed up to the Cloud,” don’t look up at the sky. Look towards the ocean and maybe pour yourself a glass of water while there’s still some left.
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