A coalition of data center developers wants the Texas grid operator to change the rule that decides who gets shut off first when electricity runs short, and it is arguing that the state’s largest new power customers will build outside the grid entirely if the answer stays no.
The Global Capacity Alliance, a group founded by the power developer V-Wire, posted a proposal and a supporting engineering study to ERCOT, the nonprofit that runs the electric grid for most of Texas, on Sept. 10, and followed with draft rule language on Sept. 15. Both were placed on the agenda of the grid operator’s Large Load Working Group for Sept. 17, the committee where the rules governing enormous new electricity customers are written before they reach a vote.
ERCOT created a fast-track status that lets a data center start drawing power before all the engineering studies are finished, in exchange for agreeing to be cut first in a squeeze. The proposal, which its sponsors call front-of-the-meter netting, would let such a customer pair itself with a battery or gas plant built alongside it and, whenever that unit is generating, have the load’s mandatory floor raised to match. In plain terms, a data center that brings its own power would be shielded from the cutbacks for as long as its own power is running.
The stakes reach well past the industry. ERCOT’s queue of requests from very large users now totals 474 gigawatts, a figure the coalition’s own study describes as “421% higher than the current peak load record,” citing a presentation the grid operator gave the Texas Senate Business and Commerce Committee on July 29. Texas cannot build generation at that pace. The first-to-be-cut arrangement is what makes it safe to connect those customers anyway, and it is the protection standing between a data center boom and everyone else’s air conditioning on an August evening.
The coalition’s study puts numbers on what that protection costs the data centers. Aurora Energy Research modeled three hypothetical 600-megawatt computing campuses in West Texas, North Texas and the Panhandle connecting in 2028, and found they would be curtailed in every weather year it tested — between 50 and 241 hours a year in a repeat of 2013 conditions, and as many as 550 hours in the most extreme year. Curtailed electricity ranged from 0.35 percent to 3.47 percent of what the sites wanted to consume. Pairing a four-hour battery with a site cut those curtailment hours by 53 percent on its own. With the netting rule the coalition is proposing, the same battery cut them by 83 percent.
That study carries an unusual provenance. Every page is stamped confidential and the cover identifies it as “Prepared for Google and V-Wire,” yet it now sits on ERCOT’s public website as a meeting exhibit — a rare look at what a large computing company’s own consultants tell it about the risk of plugging into the Texas grid.
Two limits written into the proposal will decide whether it delivers new capacity or simply relabels existing plants. During a declared power emergency, the coalition says, the company scheduling the load must drop the shield “within 60 seconds and without intentional delay,” returning the customer to the grid operator’s control at the moment the grid most needs it. A second provision, which the sponsors call the 12-month rule, requires that the paired generator have entered commercial operation no more than a year before the data center energizes — an attempt to force the pairing onto genuinely new steel. The load would keep paying full transmission charges on a separate, unnetted meter.
The argument underneath is a warning, and the coalition states it plainly: “Without a grid-integrated path, assets will still get built – private capital moves BTM into a WLPUN or fully off-grid. ERCOT loses new generation, dispatch, and scarcity rights.” Stripped of the shorthand — behind the meter, or inside a privately owned network — the computing plants and their generators get built either way, and Texas either has them inside the market where the grid operator can dispatch them, or outside it where no one can.
State regulators have been circling the same question from the other direction. The Public Utility Commission held in a July 24 order in Docket 59220 that when a large customer sits next to its own generator, the amount it can be ordered to cut is not capped by that generator’s output. The commission separately took up what deposits those customers must post, as The Texas Dispatch reported Sept. 10.
Nothing is decided. The coalition says only that it “will be formally submitting” the change into ERCOT’s stakeholder process, which runs through several committees before reaching the grid operator’s board and then the commission. The working group meets again Oct. 15, and ERCOT owes the Public Utility Commission a report on data center electricity use in December.