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Jet engines & AI power

Why are there jet engines at a data center?

I saw a photo of what looked exactly like jet engines — rows of them, on trailers, sitting in the dirt outside an AI data center — and my first thought was, "that's obviously AI-generated." It wasn't. It's exactly what it looks like. Here's what I found when I went down the rabbit hole.

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The short answer

They couldn't wait for the grid

The power grid is full. To plug a big new building into it, you get in line — the "interconnection queue" — and that line runs north of five years, about seven in the data-center capital of Northern Virginia. The AI companies are racing each other in ninety-day sprints. They did the math and decided not to wait: bring your own power, bring it this year.

So what do you buy when you need a gigawatt of electricity now? The fastest big generator civilization has ever built — a jet engine. They call it an "aeroderivative gas turbine": an aircraft engine adapted to spin a generator instead of pushing a plane, running on the same natural gas that heats a house.

What's real, what's a myth

Once you see the photo, three things surprise everybody

TRUE

They're literally jet engines. Aeroderivative gas turbines — GE's LM2500 and LM6000 come off the same CF6 family that flies 747s. Air Force One runs four of that family's engines.

TRUE

They run on natural gas, not jet fuel. A jet engine doesn't care what the fuel is — it just needs heat. Swap the injectors, run a gas line, feed it the same gas as a furnace.

TRUE

Some are pulled off scrapped 747s. ProEnergy rebuilds retired airliner cores into ~48 MW power plants — ~40,000 homes each. About a thousand more 747 engines retire this decade.

MYTH

"They're just backup generators." No — these are the primary power, running the building around the clock, often "behind the meter" and never touching the public grid.

MYTH

"It makes power from thrust." No — the hot gas spins a turbine on a shaft that turns a generator, the way a driveshaft turns your car's wheels. No thrust involved.

MYTH

"The fast option must be easy to get." No — even the jet engines are sold out to 2029–2030. That's why they're scavenging dead 747s.

The questions everyone's asking

Jet engines at a data center — FAQ

Are those really jet engines at a data center?
Yes — and that's the part that breaks your brain when you first see the photo. The industry name is an "aeroderivative gas turbine," which is a boring name for a wild object: an aircraft jet engine adapted to spin a generator instead of pushing a plane. The two workhorses, GE's LM2500 and LM6000, come off the same CF6 engine family that has flown Boeing 747s, 767s, and the DC-10 for fifty years. Four engines from that same family hang under the wings of Air Force One right now. So it isn't like a jet engine — the hot core literally is one.
How does a jet engine run on natural gas instead of jet fuel?
Because a jet engine doesn't actually care what the fuel is. Every jet engine and nearly every gas power plant runs the same trick — the Brayton cycle: suck in air, squeeze it hard, spray in fuel and light it, and let the blast of hot gas roar through a turbine. The combustor will happily burn jet fuel, diesel, natural gas, or hydrogen. It just needs something to turn into heat. Jet fuel was only ever in there because that's what an airplane can carry in its wings. A machine bolted to the ground next to a gas pipeline has no such problem — so they swap the fuel injectors, run a gas line in, and feed it the same natural gas that heats a house.
Are they really rebuilt from old airplane engines?
Some are, and this is the almost-poetic part. Keep the distinction honest: the new GE units are newly built — derived from the aircraft design. But a company called ProEnergy buys retired engine cores pulled off scrapped 747s, rebuilds each one into a roughly 48-megawatt power plant — enough for about 40,000 homes — and has sold 21 of them. Because the last 747 rolled off the line in early 2023 and the world's jumbos are aging out all at once, roughly a thousand more of those engines are expected to come available this decade. Say it right: some are derived from jet engines; some literally are one, pulled off a dead 747.
How much power is that, really?
One of these turbines makes about 35 to 50 megawatts, and a big AI campus needs hundreds of megawatts — up to a full gigawatt — so a single site runs dozens. The cleanest named example is the OpenAI-and-Crusoe "Stargate" site in Abilene, Texas, which ordered 29 GE turbines — about a gigawatt of aircraft engines in one field — plus a batch of the rebuilt-from-747 units. For a yardstick: the Hoover Dam makes about two gigawatts. So one field of these jet engines is roughly half a Hoover Dam, sitting in the dirt behind a warehouse full of computer chips.
Aren't these just backup generators, like every data center has?
No, and this is the thing most people get backwards. Every data center has always kept small diesel generators out back for when the grid blinks. This is not that. These jet engines are the main power supply — the thing actually running the building, around the clock. An AI data center has no rush hour and no night; it runs flat-out, so the turbines effectively never stop. A lot of the time the power doesn't even touch the public grid: it runs straight from the turbine into the servers, "behind the meter" in the jargon — a private power plant for a private supercomputer.
Isn't a jet engine a wildly inefficient way to make electricity?
Running on its own, one of these turbines converts only about 37 to 42 percent of its fuel into electricity, and it throws off more carbon dioxide per unit of power than the average American grid. A proper power plant would bolt a second stage onto the back to capture the wasted exhaust heat and push efficiency toward 60 percent — a "combined-cycle" plant. But that second stage is huge, expensive, and slow to build, and slow is the one thing these companies won't tolerate. So they run them "simple-cycle" — naked, fast, a little wasteful — because in this race speed beats efficiency every time. (And no, the engine isn't blasting exhaust at a windmill — the hot gas spins a turbine on a shaft, the way a driveshaft turns your car's wheels.)
Why not just plug into the grid, or build nuclear?
The grid is full. If you want to plug a big new building into the American electric grid, you get in line — the "interconnection queue" — and that line is measured in years, north of five on average and about seven in data-center-heavy Northern Virginia. Nuclear is even slower: a big plant takes ten to fifteen years, and as of 2026 the U.S. has zero reactors under construction. A data center needs power in a year or two. A jet engine is the one big power source you can actually have running before the quarter ends. That speed is the entire reason these things exist.
Why is there a power shortage at all?
It isn't electric cars and it isn't air conditioning — it's AI itself. The International Energy Agency projects that global data-center electricity use will roughly double by 2030, to about the total power consumption of Japan. The appetite is genuinely hard to picture, and the grid can't build fast enough to keep up. Demand is exploding while supply is stuck in line. The jet engines are what that collision looks like on the ground.
Do the jet engines run out too?
This is the twist that turns the whole thing into a loop. Having fled the multi-year grid line, the AI companies ran straight into another one: all three of the big turbine makers are now booked solid into 2029 and 2030. The fast escape hatch became its own waiting list — which is precisely why a company like ProEnergy is out in the desert boneyards harvesting engines off dead 747s. When you can't buy a new turbine until the end of the decade, a rebuilt airliner engine you can have this year starts to look like a bargain. The bottleneck didn't disappear. It just moved down the hall.
Who is Byte Bungalow?
I'm Robert. I've spent more than twenty years around generators and power — I thought I knew what a "big generator" looked like, and then I saw a field of jet engines sitting in the Texas dirt and had no idea this world even existed. So I went down the rabbit hole. I'm not an insider and I'm not pretending to be an expert on turbines — I read the documents and the spec sheets, I say which parts I couldn't pin down, and I'd rather you check me than trust me. If you build these, run them, or live close enough to hear them, the comments are where you set me straight.

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Where this came from

Sources

I'd rather you check me than trust me. The facts on this page trace to these.

Independent commentary. Not affiliated with GE Vernova, ProEnergy, Crusoe, OpenAI, or any company named here, and nothing on this page is an endorsement. I'm not an engineer and not a turbine expert — this is what I found reading the documents, told in plain English. Power figures are approximate and vary by model, configuration, and temperature.

Still chasing this

The one I want to figure out next

Are these actually temporary? Or do we come back ten years from now and the jet engines are still sitting there — behind the sound wall — because the permanent power plant nobody built never got built? These sites started feeling to me like portable classrooms for electricity: they show up because the real building isn't ready. If you build these, run them, or live close enough to hear one, tell me what this looks like from your side — and tell me what I missed.