Behind a long blast wall on the southern edge of Lake Nona sits a building almost nobody is meant to notice. It has hardly any windows. Next to it stands a water tank holding two million gallons, and buried in the ground beneath it is a tank of diesel fuel large enough to fill a backyard swimming pool several times over. It is one of the most important buildings in Orlando’s “city of the future,” and you have almost certainly never heard of it.
That is the quiet paradox of Lake Nona. A place sold as frictionless, futuristic and brand-new leans, in the end, on the least glamorous idea in Florida: that sooner or later the power goes out, and somebody had better have planned for it.
A city built on a cow pasture
Not very long ago, this was cattle country. In 1996 the London-based Tavistock Group quietly bought up roughly 7,000 acres of old pasture and citrus land in southeast Orange County, a flat green nowhere between the airport and the county line. For years it mostly stayed that way: fence wire, scrub, cows, and power lines marching across an empty horizon toward somewhere more important.
What changed it was a medical school. In 2005 the University of Central Florida needed somewhere to put one, and Tavistock offered land — 50 acres and a cash gift to seed the fundraising. That single decision pulled in everything after it. Over the next few years a research institute, a children’s hospital, a veterans’ hospital and a cluster of health-science buildings all agreed to come, and a stretch of cow pasture started calling itself Medical City.
For a while the two worlds overlapped on the same frame: longhorns grazing a weedy field in the foreground, and behind them a billion dollars of hospital rising out of the flatwoods. Then the fences came down, the cattle went somewhere else, and the city of the future had the ground to itself.
Medical City
The medical school opened its doors, and the rest followed close behind. Nemours built a 130-bed children’s hospital that opened in 2012, all glass and colored panels. UF Health put up a research center; the University of Central Florida’s own hospital arrived later, run jointly with HCA. The whole thing was master-planned on a clean sheet of paper — wide boulevards, buried utility lines, a town center, and the kind of promotional language (“innovation,” “wellness,” “the city of the future”) that gets printed on banners.
But under all the future-talk, Medical City had quietly signed up for a very old and very serious obligation. A research park can close for a hurricane and reopen Monday. A hospital cannot. The moment you put operating rooms, intensive-care units and children on ventilators onto a patch of Florida, you have promised something absolute: the power here is never, under any circumstances, allowed to stop.
Florida, for its part, makes exactly one promise back, and keeps it reliably: sooner or later, a storm will come across the state and knock the lights out for days. The city of the future was built directly into that fact.
The hospital that opened three years late
The clearest sign of how hard that promise is to keep came from the veterans’ hospital. The government broke ground on the Orlando VA Medical Center in 2009 and said it would open in 2012. It did not. It opened in May 2015 — years behind schedule and tens of millions of dollars over budget, after a public feud between the VA and its contractor that landed in congressional hearings. It was one of the first entirely new VA hospitals the country had built from the ground up in decades, and it became a national case study in how badly a big build can go.
And yet one piece of that troubled project was finished early, quietly, and almost perfectly — and it’s the piece this whole story turns on. Before the hospital itself was anywhere near ready to open, its power plant was already built, tested, and waiting.
The building with no windows
They call it the Central Energy Plant. It was finished in 2012, a long low box of tilt-up concrete and structural steel, built behind a wall and designed to meet a “mission-critical blast rating” — the kind of standard you apply to a building you cannot afford to lose. It cost about $42 million, and its entire job is to keep the hospital campus running when everything outside it fails.
What’s inside reads like a list written by someone who has decided never to be caught off guard. Eight emergency generators, together able to produce about 20,000 kilowatts — enough electricity for a small town. Five big chillers to make the cold water that air-conditions the hospital, because in Florida losing the air conditioning in an ICU is itself a medical emergency. Three industrial boilers for steam. A two-million-gallon tank of water. And, buried in the ground, a 208,000-gallon reservoir of diesel fuel.
Put plainly: this one building can make its own electricity, its own cooling, its own steam, and hold its own water and fuel — enough to run a two-million-square-foot hospital for days with nothing at all coming in from the outside world. No grid, no water main, no fuel truck. It won a national construction award in 2013, which is a strange thing to celebrate about a building most people will never see — but then, the whole point of it is to be unnoticed.
The most futuristic thing in the city of the future turned out to be a windowless concrete box full of diesel — built because Florida always, eventually, turns off the lights.
Back on the ordinary grid
Here is where the story quietly turns on itself. All that armor — the blast wall, the eight generators, the quarter-million gallons of fuel — wraps around the hospitals. It stops at the property line. The homes of Lake Nona, the Laureate Park bungalows and the gated streets with their brick pillars and wrought-iron crests, draw their power the same way every other Orlando neighborhood does: from the regional grid, one utility, one set of lines.
The lines here are newer, and buried, which helps. But buried lines still feed from poles, transformers and substations out in the open weather, and Central Florida is hurricane country. When Charley, Frances and Jeanne crossed the state in 2004, when Irma came through in 2017, when Milton raked Orlando in 2024, the power went out across the whole region — and the houses of the city of the future sat in the dark with everyone else.
So the two halves of Lake Nona answer the same Florida question in completely different registers. The hospitals answer it with a bunker, eight generators and days of buried fuel. The neighborhoods answer it with a flashlight and a cooler of melting ice — unless a homeowner has gone and installed, on a pad beside the house, a much smaller version of the very thing humming behind that blast wall.
Stand on one of those streets the next time a storm knocks the power out and the whole “city of the future” goes as dark as any subdivision. A mile away, behind its wall, the plant will be running — eight generators, a tank of water, a reservoir of fuel, keeping the hospitals lit without so much as a flicker. The future, it turns out, isn’t the glass and the banners. It’s the windowless box that assumed the lights would fail, and made sure that for the people who couldn’t afford the dark, they never would.
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