To The Moon

Fun post this week. I want to write about my own (newly formed) definition of AGI.

I think we'll hit AGI (or we can claim AGI) when as a society we decide the marginal unit of energy is better spent on a GPU (or whatever compute primitive exists at the time) than on a human. Said another way - when the energy consumed by compute becomes greater than the energy consumed by humans, we're making the implicit decision that we get higher utility out of sending energy to machines.

All definitions of AGI are super wishy washy anyway, so why not through another into the mix! The reason I like this one is it's quite quantitative. I’ve run the math, and the answer is 2033 (as you’ll hear me describe later, it’s all a bit “funny math dragging assumptions to the right) but that’s what makes it fun!

First - let’s start with some definitions. In today’s world people use power vs energy interchangeably, but they’re different. Power is a rate (how fast you’re using energy at any given time), while energy is a quantity (how much you’ve used over time). An oversimplified analogy - power is the speed your car is going (mph), energy is the total distance (miles) you’ve traveled. A car going 60mph for 2 hours has covered 120 miles. A data center pulling 100MW for 2 hours has consumed 200 MWh (mega watt hours).

From a unit standpoint, watts are the unit of power. My lightbulbs might be 9W It needs 9W to turn on). I keep it on for 1 hour, and I’ve used 9Wh. Kilo / Mega / Giga / Tera are just scaling prefixes (1,000x, 1,000,000x, etc). When we hear power figures quoted for data centers we often describe them in mega watts or giga watts. For example, the Colossus 1 data center that xAI rented to Anthropic this week is quoted as 300MW. What does this mean? It means Colossus 1 needs transmission lines, substation(s), generation source(s) that can sustain 300 million watts of instantaneous draw. Think of this more as a physical infrastructure problem.

This data center won’t consume 300MW x 8,760 hours / year. Maybe it runs at 70-80% utilization (but AI training clusters are “running” constantly at higher utilizations).

The confusion most people have with power vs energy, is the “hour” component is not “division” it’s “multiplication.” It’s not MW per hour, it’s MW-hours (and yes, I just wrote a “it’s not X it’s Y sentence…tried to edit it out so it doesn’t sound like AI slop, but the it’s not X it’s Y just made too much sense). Super quick math to make this concrete - let’s say my house consumes 1KW for 10 minutes, then 1.3KW for 50 minutes. To calculate the total energy used:

• From 0 to 10 minutes: drawing 1 kW for 10/60 of an hour = 0.167 kWh

• From 10 to 60 minutes: drawing 1.3 kW for 50/60 of an hour = 1.083 kWh

• Total energy over the first hour ≈ 1.25 kWh

Let’s also use the 300MW Colossus site, running at 80% utilization(ie running 80% of the time)

• 300MW x 8,760 hours / year x 80% utilization = 2,102,400 MWh

• This translates to 2,102 GWh, or 2.1TWh

• So the energy consumption over a year is 2.1TWh

I walked through that lead in so that I could then bring it back to my new definition of AGI! When will total energy consumed by machines be greater than humans. To answer that, let’s first try to get a baseline on how much energy is consumed by humans to sustain human life! A very meta question…Obviously there’s no easy answer, but I used Claude to help frame it (ie guesstimate it). Focusing on just US.

Here was Claude’s answer: 27,600 TWh of total US energy consumption. This is how Claude broke it down:

Narrow definition:

• Residential energy use: 5,600 TWh

• Food systems (ag + processing + transport+ retail): 2,900 TWh

• Healthcare delivery: 590 TWh

• Water + sewage treatment: 290 TWh

• Total = 9,400 TWh

Moderate Definition. Everything in the narrow definition plus:

• Personal transportation: 9,400 TWh

• Commercial buildings: 4,100 TWh

• consumer goods manufacturing: 2,000 TWh

• Total = 20,500 TWh

Most Aggressive Definition

• According to the US Energy Information Administration (EIA) the US consumed 94.2 quads of energy in 2024. Converting that to TWh = 27,600 TWh

• This is all the estimate for all of the energy the US economy consumes, in any form, measured at the source. Every barrel of oil burned in a car. Every cubic foot of natural gas burned in a furnace. Every ton of coal or pound of uranium fed into a power plant. Every BTU of solar or wind generated. etc. A figure you may see quoted if you ask Claude how much electricity is consumed annually in the US is closer to 4,000 TWh (but that is just looking at the electric grid > offtake figure). Most energy is never electricity to begin with (and that’s the gap). This is the difference between the 4,000 TWh figure and the ~28,000 TWh figure

• The gap between the “moderate” definition and “aggressive” definition is largely military, freight, etc

So in summary, we can look at annual human energy consumption in the US as

• 9,400 TWh in most conservative case

• 20,500 TWh in the moderate case

• 27,600 TWh in the most aggressive case

What’s a good assumption for total annual data center energy consumption? I asked Claude, and the answer was ~300TWh. Here’s how the math breaks down

• Roughly 40GW of total data center capacity (this felt slightly high, but the Claude estimate was based on all hyperscalers, all labs and neolabs, and al neoclouds in the US)

• If you assume 80% utilization, then:

• This equates to 280TWh of data center energy consumption

So today, the data center energy consumption is 280TWh. Earlier, I said the “moderate” estimate for annual energy consumption to support humans was 20,500TWh. This means today, data centers consume 1% of the energy humans do. Long way to go to AGI :)

So when will we hit the 50% threshold?? Let’s do some more “funny math” :). Let’s say annual population growth is 0.5%, end users consume 1-2% more energy per year, but we get 1-1.5% energy efficiency gains / year. This leads us to ~0.5-1% annual growth in energy consumption, or 21,440 TWh in 2030.

Now, let’s assume OpenAI is going from 2GW in 2025 to 30GW in 2030. And let’s assume the rest of the industry grows at the same rate (maybe aggressive, but just for fun let’s make that assumption). This would get us to 12,600 TWh in 2030 used for data centers. The lines are getting closer! 12,600 TWh for data centers vs 21,440 TWh for human consumption = almost 40%!

Ok final assumptions :) Let’s assume data center growth continues at the same rate in 2030 and beyond as it’s projected to from 2025 to 2030. And let’s assume human consumption continues at ~0.75% / year beyond 2030. When do the lines cross?? The answer is 2033!! This would continue an exponential, which is very hard to do…But if we went from 40GW today to 600GW in 2030, at the same rate we’d be at ~3TW in 2033. Doing all the funny-math converting that to TWh gets us to ~22,000TWh by data centers in 2033. Extrapolating the human consumption at 0.75% / year gets us to ~22,000 TWh in 2033. The lines have crossed!

Of course, this is all assumption upon assumption upon assumption, and I’m no energy expert at all, but thought it’d be fun to run through this exercise.

AGI by 2033!

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