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  • AI Now Eats 31% of All Data Center Electricity.

AI Now Eats 31% of All Data Center Electricity.

Microsoft spent $41 billion on capex last quarter — about $450 million a day — and still can't build fast enough.

The Capital Current
The Capital Current

Jul 30, 2026

• THE GRID

Azure Crossed $100 Billion. The Grid Felt Every Dollar.

I was refreshing Microsoft's investor page at 4:01 p.m. yesterday. The numbers loaded. I skipped past revenue. Went straight to Azure.

43%.

That's how fast Azure grew last quarter. Not the 40% Wall Street expected. Not the 39% from the prior quarter. Forty-three percent. For the full fiscal year, Azure revenue topped $100 billion for the first time ever.

Revenue hit $90 billion for the quarter. Earnings came in at $4.81 a share. Both beat estimates by a wide margin. But Azure is the number that matters most to us.

MSFT Q4 Revenue
$90.0B
Azure Growth
43%
Q4 Capex
$41B
Cloud Revenue
$59.3B

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That 43% has a power cord attached. Every dollar of Azure runs through server racks. Racks live in data centers. Data centers eat electricity. Microsoft spent $41 billion on capex last quarter — about $450 million a day. Most went to data centers and chips.

And it still wasn't enough. Microsoft says supply is "constrained at least through 2026." They can sell more cloud than they can build.

Last week, Alphabet reported its own beat. Revenue up 24%. Cloud up 82%. Then it raised 2026 capex to $195–$205 billion. The stock dropped 7.1%.

Microsoft's stock rose about 1.1% after hours.

Why the split? Azure at 43% proved the spending is paying off. Alphabet's revenue grew, but the capex scared investors. Microsoft showed the returns are arriving faster than the bills.

Now zoom out. Gartner says global data center power use will hit 565 terawatt hours this year. Up 26% from 447 TWh in 2025. AI servers now eat 31% of all data center electricity. By 2027, they'll surpass conventional servers in power use.

The U.S. alone will consume 204 TWh in data centers this year. One-third of that feeds AI.

Worldwide data center power demand will reach 132 gigawatts in 2026 and 290 GW by 2030, per Gartner. At that level, grid supply won't keep up.

Copilot passed 30 million paid seats — up from 20 million last quarter. Every new seat means more compute. More compute means more power.

Microsoft just proved AI demand is real. Now someone has to prove the grid can keep up.

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• BLACKOUT WATCH

Cracks in the System

  • NERC flagged three regions at "elevated risk" for blackouts this summer. New England is losing firm power imports from its neighbors. The Pacific Northwest faces drought and below-normal snowpack, cutting hydro output. Both regions were flagged before the latest wave of data center load requests hit the queue. NERC added 58 GW of new generation this cycle — but it's still not enough in the places that need it most.

  • Data center opposition blocked or delayed 75 projects worth about $130 billion in Q1 2026 alone. Data Center Watch called it the largest single-quarter concentration on record — roughly equal to all of 2025 in just three months. Active opposition groups more than doubled, from 396 at the end of 2025 to 833 by March. Over 300 state-level bills were filed in the first six weeks of the year. These aren't scattered protests. This is an organized national movement slowing the buildout.

  • Microsoft grew Azure 43% — and still can't build fast enough. The company says it remains supply-constrained "at least through 2026." It has reportedly explored buying capacity from Amazon and Google to fill the gap. When the biggest spender in the industry is shopping for spare servers from its rivals, the supply curve isn't bending. It's breaking.

The market is pricing AI demand as infinite. It's not pricing the extension cords as finite.

• RESISTANCE

Texas Draws the Line on Data Centers

Texas was the dream. Cheap power. Light regulation. Plenty of land. Data center developers poured in.

Now the rules are changing — fast.

Yesterday, the Texas Tribune reported that ERCOT and the Public Utility Commission are asking lawmakers for more authority over data centers. They want to control how these massive loads connect to the grid.

⚠ Regulatory Shift

Texas PUC is rewriting transmission cost rules so data centers pay for the grid upgrades they require. Large loads must post financial security before connecting and pay transmission costs from day one. Final rules expected by December 2026.

Governor Abbott kicked this off in June. He directed the PUC and ERCOT to "shield Texans from data center infrastructure costs." His point was blunt: if data centers want Texas power, they pay for the wires.

The PUC went further. Two weeks ago, it approved "ride-through" rules. Data centers must stay online during grid frequency swings. No more tripping offline and making the system unstable for everyone else.

Right now, all Texas power users share transmission costs through a formula called 4CP. Data centers have been riding on that shared pool. The PUC wants that to end.

New York imposed a one-year moratorium on new large data centers. Texas took a different path. It's not saying no. It's saying pay your share.

The Sierra Club noted the shift this week. The PUC's proposed rules would stop spreading data center infrastructure costs across all ratepayers. That's a big change in a state that built its brand on cheap, easy power.

The message from Austin is clear: you can build here, but you're picking up the check.

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