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CATALYST Prediction Not checkable as stated
Behind-the-meter nuclear data centers have no credible case for decades
“I don't think there's a credible argument for behind the meter nuclear at a data center in the near future. And by near future, I mean, The next couple of decades.”
Brian Janous Sep 12, 2025 ▶ 35:44 When to colocate data centers with generation
CATALYST Prediction Not checkable as stated
Janous: US data center constraints will persist through 2030 and beyond
“All the stuff we thought we were going to build in this country, or thought we could build, a lot of that's not going to get built, because of all the things we've just been talking about. Like, I think that, and this problem is going to persist for the forese…”
Brian Janous Sep 3, 2026 ▶ 40:30 What comes after the data center backlash?
CATALYST Prediction Not checkable as stated
Janous: Vast majority of computation will remain in 100MW+ data centers
“I still believe that the vast majority of the computation is going to be done in large data centers. Large being defined as hundred megawatts or more in my world.”
Brian Janous Sep 3, 2026 ▶ 44:52 What comes after the data center backlash?
CATALYST Assertion Partly supported
Solar and batteries have killed Texas's $9,000 per megawatt-hour price spikes
“The only argument, you know, you ever had for building something like a baseload generator in Texas is that sometimes the price would go to 5000 or 9000 dollars a megawatt hour, but with the massive amounts of solar and storage coming out of the grid, which yo…”
Brian Janous Sep 12, 2025 ▶ 15:33 When to colocate data centers with generation
CATALYST Prediction Not checkable as stated
Janous: Compute demand will exceed available power supply through 2030.
“It's possible, though I suspect that given the, my fundamental belief is that the demand for compute, let's just say through twenty-thirty, will exceed the available power in the market. And therefore, the marginal value of the next watt or gigawatt, frankly, …”
Brian Janous Dec 5, 2024 ▶ 23:47 Explaining the 'Watt-Bit Spread'
CATALYST Prediction Open · timeframe Jun 2034
Janus: AEP will not connect 90 gigawatts in next decade
“There's no reason to believe that AEP is going to connect 90 gigawatts in the next 10 years.”
Brian Janous Jun 13, 2024 ▶ 13:35 Under the hood of data center power demand
CATALYST Prediction Not checkable as stated
Janus: AI Training Loads Will Not Run as Intermittent Renewable-Following Workloads
“So I think it's a little bit overblown to say, and I think this is also true of Something like the conversation around crypto, but that these are highly curtailable loads that you could just, you know, attach a training model to a wind farm and only run it, yo…”
Brian Janous Jun 13, 2024 ▶ 22:39 Under the hood of data center power demand
CATALYST Prediction Not checkable as stated
Janus: Nuclear Power Will Not Solve Data Center Bottlenecks This Decade
“The focus that these companies have right now is getting data centers online in the next, Two, three, four years, and nuclear is not going to solve that problem.”
Brian Janous Jun 13, 2024 ▶ 28:31 Under the hood of data center power demand
CATALYST Prediction Not checkable as stated
Janus: Hyperscaler climate targets are probably not achievable on time
“And so there is, I think at this point, a point of coming to grips with the fact that those targets are probably not achievable in the time horizons that they had all set.”
Brian Janous Jun 13, 2024 ▶ 37:59 Under the hood of data center power demand
GREEN BLUEPRINT Prediction Not checkable as stated
Janus: 2x more efficient AI chips will lead tech giants to deploy 2x more chips
“And, you know, I had someone ask me the other day, well, what happens if, you know, if NVIDIA comes out with a chip that's twice as efficient? And my response to that is, well, then Meta or Microsoft or Google will plug in twice as many chips. If they have the…”
Brian Janous May 21, 2024 ▶ 21:44 Energy is now the ‘primary bottleneck’ for AI
GREEN BLUEPRINT Prediction Not checkable as stated
Janus: Utilities Can Meet Load Growth Without Heavy Natural Gas Buildout
“I think we can. I think there is a lot of levers that we have at our disposal, you know, and I have, I've had empathy for my friends in the southeast. I know that they're under a lot of pressure, and I know that, you know, they, they're at the tip of the spear…”
Brian Janous May 21, 2024 ▶ 32:40 Energy is now the ‘primary bottleneck’ for AI
GREEN BLUEPRINT Prediction Didn’t hold up
Janus: Advanced nuclear and fusion will not solve grid problems this decade
“They're not solving any problems this decade, right? That is a 20 thirties and probably a late 20 thirties. Opportunity.”
Brian Janous May 21, 2024 ▶ 49:20 Energy is now the ‘primary bottleneck’ for AI
GREEN BLUEPRINT Prediction Not checkable as stated
Janis: Electricity supply, not GPU shortages, will bottleneck AI growth
“We'll find a way to make more chips. There's a lot of capital in that space. I, I'm more concerned about can the electrons keep up with the growth.”
Brian Janous Mar 6, 2024 ▶ 4:11 New demand is straining the grid. Here’s how to tackle it.
GREEN BLUEPRINT Prediction Not checkable as stated
Janis: Grid bottlenecks will prevent data centers from doubling energy use quickly
“I'm skeptical that we're actually going to achieve that growth rate without some significant movement in terms of how fast we're investing in grid infrastructure.”
Brian Janous Mar 6, 2024 ▶ 6:18 New demand is straining the grid. Here’s how to tackle it.
CATALYST Assertion Not checkable as stated
Janous: Data centers use little water compared to agriculture and golf courses
“And if you look at the actual facts, like, data centers do not use that much water relative to, you know, fill in the blank, almonds, avocados, golf courses, you know, so.”
Brian Janous Sep 3, 2026 ▶ 6:59 What comes after the data center backlash?
CATALYST Assertion Not checkable as stated
Janous: GE Vernova builds 2.6 GW capacity for one-gigawatt data center
“In fact, I was talking to Someone from GE Vernova yesterday, and he was talking about for this gigawatt data center, they're having to build 2.6 gigawatts of capacity across generation and batteries and everything else.”
Brian Janous Sep 3, 2026 ▶ 25:47 What comes after the data center backlash?
CATALYST Assertion Not checkable as stated
Off-grid Texas data centers pay up to 10x more for electricity
“If you look at it in a place like Texas, for instance, where the average price for electricity on any given day is actually pretty low. Like the real time price may be sitting around 20 dollars a megawatt hour. So you go off grid in Texas and you're paying som…”
Brian Janous Sep 12, 2025 ▶ 15:02 When to colocate data centers with generation
CATALYST Prediction Not checkable as stated
Virtual power plants will soon bridge grid capacity for large data centers
“So it does take some work to get it, and you're right, no one's done it at a, at any real scale yet but I think we're gonna see it pretty soon.”
Brian Janous Sep 12, 2025 ▶ 30:49 When to colocate data centers with generation
CATALYST Prediction Not checkable as stated
Land constraints will keep on-site renewables a niche data center solution
“That's still going to be a relatively small percentage of the overall market because we can't put everything in West Texas, right? We still are going to have The tendency to want to be closer to major metros where that sort of land availability is going to be …”
Brian Janous Sep 12, 2025 ▶ 33:38 When to colocate data centers with generation
CATALYST Prediction Not checkable as stated
Janous: Building simultaneous remote gigawatt data centers will cause severe labor delays.
“But if all, if too many people try to do that all at once, you're going to create a labor problem and you're going to have significant delays in getting a lot of this infrastructure stood up.”
Brian Janous Dec 5, 2024 ▶ 11:18 Explaining the 'Watt-Bit Spread'
CATALYST Assertion Supported
Janous: Full-stack data center CapEx, including GPUs, costs $25M per megawatt.
“The cost of a data center today in terms of the full stack CapEx deployment all the way through GPUs is about 25 twenty-five million a megawatt or twenty-five billion a gigawatt”
Brian Janous Dec 5, 2024 ▶ 39:29 Explaining the 'Watt-Bit Spread'
CATALYST Assertion Supported
Janous: AEP's data center demand forecast surged 275% in five months
“If you go even back to January of this year, PJM had Roughly four gigawatts of anticipated data center demand for AEP by 2030, and by May, AEP revised that up to closer to 15, in just five months, right?”
Brian Janous Jun 13, 2024 ▶ 15:27 Under the hood of data center power demand
CATALYST Assertion Partly supported
Janus: Every New Dublin Data Center Must Install On-Site Gas Generation
“So now every new data center in Dublin is getting a natural gas generator behind the meter so it can be flexible and, you know, avoid that contribution to system peak.”
Brian Janous Jun 13, 2024 ▶ 31:19 Under the hood of data center power demand
GREEN BLUEPRINT Assertion Not checkable as stated
Janus: Most utility employees have never worked during an era of load growth
“Most people that work at a utility today have never worked at a utility during an era of growth.”
Brian Janous May 21, 2024 ▶ 13:45 Energy is now the ‘primary bottleneck’ for AI
GREEN BLUEPRINT Assertion Supported
Janis: Hyperscaler electricity procurement tranches have reached gigawatt scale
“The tranche sizes each year that you're having to go out and procure are now being measured in the gigawatt scale. So you're no longer immaterial to utilities load forecast. In fact, in many cases, you are the utilities load forecast.”
Brian Janous Mar 6, 2024 ▶ 4:48 New demand is straining the grid. Here’s how to tackle it.
GREEN BLUEPRINT Prediction Not checkable as stated
Janis: Nuclear and fusion will not address near-term power demand
“I definitely think that we over-index on counting on, quote, energy miracles, because, again, going back to what we were talking about before, it takes a long time to build this stuff. So we are not going to have significant contribution of, say, nuclear energ…”
Brian Janous Mar 6, 2024 ▶ 8:21 New demand is straining the grid. Here’s how to tackle it.
GREEN BLUEPRINT Assertion Supported
Janis: RMI study shows GETs unlock over 6 GW on PJM grid
“There was a great RMI study that just came out very recently that looked at the PJM system and determined that you could unlock in excess of six gigawatts of extra capacity, and this is, I mean, PJM's a 90 gigawatt system, so six gigawatts is not nothing. That…”
Brian Janous Mar 6, 2024 ▶ 14:33 New demand is straining the grid. Here’s how to tackle it.
GREEN BLUEPRINT Prediction Not checkable as stated
Janis: The US faces a massive deficit of powered land
“We're going to have a huge deficit of powered land in this country to serve, again, not just data centers, but also all the domestic manufacturing that's looking for the same thing and hydrogen and other things that are also going to be looking for clean energ…”
Brian Janous Mar 6, 2024 ▶ 17:17 New demand is straining the grid. Here’s how to tackle it.
CATALYST Assertion Partly supported
Janous: Data centers spurred massive civic investment and job gains in Quincy
“There was a fantastic story just in the last week about Quincy Washington building a fifteen million dollar aquatic center and they have a hundred and fifty million dollar state of the art school and their unemployment rate has gone from like 29% to six percen…”
Brian Janous Sep 3, 2026 ▶ 5:45 What comes after the data center backlash?
CATALYST Assertion Supported
Janous: Electricity prices did not rise for 100 years during grid expansion
“Electricity prices did not go up for a hundred years as we massively expanded the grid.”
Brian Janous Sep 3, 2026 ▶ 21:01 What comes after the data center backlash?
CATALYST Prediction Open · timeframe Dec 2030
Janous: Terrestrial data centers will remain the vast majority through 2030
“I just look at the pie of total data centers by 20 30 and pick your date in the future. I'm a big believer of terrestrial data centers are still going to be, like, the vast majority of the way we build data centers. Like, I just don't, I'm not sure how much it…”
Brian Janous Sep 3, 2026 ▶ 37:16 What comes after the data center backlash?
CATALYST Assertion Open · timeframe Sep 2028
AI training data centers are beginning to abandon backup generators
“I think with some of the AI training sites, we've seen it's more of a move away from backup generators.”
Brian Janous Sep 12, 2025 ▶ 7:17 When to colocate data centers with generation
CATALYST Assertion Supported
Janous: Data center developers can enter utility queues for just $10,000.
“And some of them are big tech companies, and some of them are just two guys with a truck that decided they were going to be data center developers, and they go get a queue position, and they have to pay 10,000 dollars, that's it, to get in the queue.”
Brian Janous Dec 5, 2024 ▶ 12:47 Explaining the 'Watt-Bit Spread'
CATALYST Assertion Supported
Janus: Microsoft's energy demand grew from hundreds of megawatts to gigawatts
“Over that decade, we had gone from a baseline of, you know, a couple hundred megawatts, and we were growing at a relatively rapid pace, but that's also kind of a small denominator. So the incremental tranches every year that we had to go procure were measured …”
Brian Janous Jun 13, 2024 ▶ 7:23 Under the hood of data center power demand
CATALYST Assertion Supported
Janus: Data Centers Account for Nearly 20% of Ireland's Electricity
“It's almost 20% of the entire country of Ireland's electricity are data centers, and they're almost all in Dublin.”
Brian Janous Jun 13, 2024 ▶ 31:00 Under the hood of data center power demand
GREEN BLUEPRINT Assertion Supported
Janus: Amazon Talen Nuclear Deal Uses Existing Capacity, Not Net New
“Amazon Talon deals is, it's sort of a corollary to what John's talking about, where, you know, what you're doing is saying, Go, go to where the power is... Here you're just saying go to where the capacity is, right? And you could argue whether it's clean or no…”
Brian Janous May 21, 2024 ▶ 41:20 Energy is now the ‘primary bottleneck’ for AI
GREEN BLUEPRINT Assertion Supported
Janis: Big tech data centers account for at least 15-20 GW
“Even if you just take the, all the big tech companies and ignore the rest of the data centers, that alone is, is probably at least 15 to 20 gigawatts of capacity.”
Brian Janous Mar 6, 2024 ▶ 6:03 New demand is straining the grid. Here’s how to tackle it.
CATALYST Assertion Supported
Janous: Land represents just 1% of a data center's 15-year total cost.
“I mean, on a total cost basis, you know, over a fifteen-year period, and, you know, TCO is the way we think about it in the world, land is about one percent. Of the cost to operate a data center. You know, the full stack with servers and everything.”
Brian Janous Dec 5, 2024 ▶ 16:05 Explaining the 'Watt-Bit Spread'
CATALYST Assertion Supported
Janus: AEP runs rare 765 kV transmission system attractive to hyperscalers
“They operate one of the highest voltage Systems in the country. So they operate a seven 65 KV system which is, you know, higher than what anyone else has. There's a little bit of seven 65 in New York as well.”
Brian Janous Jun 13, 2024 ▶ 14:07 Under the hood of data center power demand
GREEN BLUEPRINT Assertion Supported
Janus: Big tech hyperscalers grew from hundreds of megawatts to gigawatts by 2020
“Early in the two, you know, 2010 time frame, Microsoft, Amazon, Google, you know, they maybe all had a few hundred megawatts of data center capacity. Well, now you get to the end of that decade, now they're all sitting on a few gigawatts of capacity”
Brian Janous May 21, 2024 ▶ 11:11 Energy is now the ‘primary bottleneck’ for AI
GREEN BLUEPRINT Assertion Not checkable as stated
Janis: Microsoft had 100 to 200 MW data center capacity in 2011
“I think when I joined Microsoft in 2011, there was somewhere between a 102 hundred megawatts of data center capacity, which is not nothing, but compared to what it is today is pretty minuscule.”
Brian Janous Mar 6, 2024 ▶ 2:04 New demand is straining the grid. Here’s how to tackle it.
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