ERCOT Wants Data Center Cuts Before Reserves Hit 2,000 MW

ERCOT chief executive Pablo Vegas will ask the Texas Legislature for authority to require data centers to cut their power use “even before an emergency is declared”, Bloomberg reported on 11 November. Today the grid has to be at level two of a three-level emergency before ERCOT can ask data centers to reduce demand; Vegas wants to require cuts at level one or earlier.

On ERCOT’s own definitions, level two begins when reserves fall below 2,000 MW and level one below 2,500 MW. Moving the trigger would mean cuts start with 500 MW more reserves left, 25% more, by our arithmetic.

What Vegas Is Asking For

Bloomberg reported that Vegas “would like to require facilities to scale back when the grid is at level one or even before that first indicator of electricity scarcity”. We could read only the opening of Bloomberg’s report; the part we read does not give the size of the cuts or a bill number.

ERCOT’s grid conditions page says level one means reserves “are below 2,500 MW and expected to remain below for 30 minutes”, with no controlled outages. Level three, below 1,500 MW, means “Controlled outages are underway, which impact all customer classes, including residential, commercial, and industrial”.

The reserve levels at which ERCOT’s three energy emergency levels begin, from ERCOT’s grid conditi
The reserve levels at which ERCOT’s three energy emergency levels begin, from ERCOT’s grid conditions page; today’s level two trigger and Vegas’s ask are as Bloomberg reported. The 500 MW gap is our arithmetic.

Business Pill · Who Pays for the Grid

An evergreen Business Engineer explainer on who pays when the grid is extended for large loads such as data centers. It teaches the general idea only and does not discuss ERCOT or this request.

The key insight: As we read it, Vegas is asking to move the point at which data centers must give way from 2,000 MW of reserves to 2,500 MW or higher, 500 MW earlier by our arithmetic, in a grid where 5.9 GW of large loads were energized in 2026, ERCOT told the Texas Senate.

The Reserve Lines in Numbers

ERCOT set these lines in a November 2023 update, raising level one from 2,300 MW and level two from 1,750 MW. It said the system “must maintain 1,500 MW of operating reserves to avoid potential Under-Frequency Load Shedding (UFLS) activation”.

Against the grid’s record peak demand of 91,134 MW, set on 22 July, the level one line is 2.7% and the level two line 2.2%, by our arithmetic. ERCOT’s 29 July presentation to the Texas Senate listed 5.9 GW of large loads energized in 2026, about 2.4 times the level one line, as we reported in Hinojosa’s Freeze vs Data Centers Seeking 4.6x Texas Peak.

What Senate Bill 6 Already Allows

The 2025 law, Senate Bill 6, already tells ERCOT to “establish a threshold before or during an energy emergency alert”. At that point it may give notice that large loads with on-site backup generation “may be directed to either deploy the customer’s on-site backup generating facilities or curtail load”. The law counts backup generation that can serve at least 50% of on-site demand.

The same law asks ERCOT to build a service to “competitively procure demand reductions from large load customers with a demand of at least 75 megawatts”, with at least 24 hours’ notice. Loads connected after 31 December 2025 must have equipment that lets them be curtailed during firm load shed.

As we read the law, it lets ERCOT set a threshold before or during an emergency alert for large loads with backup generation; Bloomberg reports that today the point at which ERCOT can ask data centers to cut is level two.

Where It Sits in Texas Politics

The Legislature convenes on 12 January, according to the law firm Foley & Lardner, which wrote that the governor ordered an audit of every data center in ERCOT’s interconnection process in August and that ERCOT expects to finish in December. Governor-elect Gina Hinojosa has said she will freeze electricity rates, as we set out in Hinojosa’s Day-One Power Price Freeze Faces a 30-Day Clock.

The tax side of the same debate is in Data Center Tax Breaks in Texas, Georgia, Ohio Near $2.5B.

The Structural Read

As we read the numbers, the reserve lines are thin against the size of the grid: the level one line is 2.7% of the 91,134 MW record peak, by our arithmetic, and the 500 MW gap is about the size of six or seven loads at the 75 MW large-load threshold Senate Bill 6 uses.

As we read the law, Senate Bill 6 already asks ERCOT to procure demand reductions from loads of at least 75 MW with 24 hours’ notice; a requirement before an emergency would add an obligation on top of a competitively procured service.

Bloomberg, 11 November 2026

“The boss of Texas’s electric grid will ask the state legislature for authority to require data centers to decrease power usage even before an emergency is declared.”

Three Implications

FOR DATA CENTER OPERATORS Senate Bill 6 already lets ERCOT direct large loads with on-site backup generation to deploy it or curtail load once all available market services are used.

FOR THE GRID ERCOT says level three, below 1,500 MW of reserves, means controlled outages for all customer classes.

FOR THE LEGISLATURE Foley & Lardner says lawmakers convene on 12 January, and that ERCOT expects to finish its audit of data centers in its interconnection process in December.

The Business Engineer Lens

This story maps onto the Business Engineer framework The State of AI Data Centers.

The framework says: “The structural bottleneck isn’t computing, it’s electrons.”

As we read it, Vegas’s ask is about who gives up electrons first when reserves run thin, and moves data centers ahead of the emergency stages. The framework predates the request and does not discuss it.

What Is Not Established

The size of the cuts Vegas wants, which data centers they would cover and how they would be paid for are not in the part of Bloomberg’s report we could read. No bill is named there. We did not contact ERCOT for this piece.

The reserve lines are ERCOT’s current published definitions; the 2.7% and 2.4 times figures compare a reserve margin with a peak and with connected load, and are scale markers, not forecasts.

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The Bottom Line

ERCOT’s chief wants to require data centers to cut power at level one, when reserves fall below 2,500 MW, or earlier, instead of level two at 2,000 MW, Bloomberg reported. That is 500 MW more reserves left when cuts begin, by our arithmetic.

95,000+ executives read Business Engineer for the AI strategy frameworks cited by ChatGPT, Claude, and Perplexity.

A note on sourcing. We could read only the opening two paragraphs of Bloomberg’s 11 November report. The emergency levels are from ERCOT’s grid conditions page and its 1 November 2023 release, and the law’s wording from the enrolled text of Senate Bill 6. The session date and audit timing are from a Foley & Lardner client alert. The peak and large-load figures are from ERCOT’s 29 July Senate presentation, as we reported on 10 November. The 500 MW gap and the ratios are our arithmetic. We did not contact ERCOT for this piece.

Sources: Bloomberg, 11 Nov 2026 · ERCOT grid conditions page · ERCOT release, 1 Nov 2023 · Texas Senate Bill 6 (2025), enrolled text · Foley & Lardner, 11 Nov 2026

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