Core Summary

  • The Public Utility Commission of Texas (PUCT) last week approved a net metering arrangement for a 260 MW AI data center co-located with an approximately equivalent-capacity wind farm, a case that could serve as a template for other co-located loads in the Lone Star State.
  • The data center is the second project planned at the site, and the developer had argued that because the two projects' combined load of about 525 MW exceeds the generation resource capacity of 265.5 MW, it should not be subject to the same curtailment requirements as the first project.
  • The commission rejected that claim. Under the July 23 order, the data center must reduce its entire load within 30 minutes during grid emergencies, if necessary by disconnecting via physical circuit breakers. Additionally, the project is prohibited from participating in paid demand response related to the arrangement.

In-Depth Analysis

This proceeding is one of the first major tests of Texas Senate Bill 6 (SB 6), which became law last year and established new rules for large loads within the Electric Reliability Council of Texas (ERCOT), including granting the grid operator authority to disconnect data centers during grid emergencies.

Rather than creating a project-specific exception, the commission largely adopted the reliability conditions proposed by ERCOT. The order allows the co-location arrangement to move forward while establishing operational requirements for future behind-the-meter projects.

In a LinkedIn post following the decision, GridTracker co-founder Chris Talley wrote that the order is not a "fatal blow" to the ERCOT co-location model. "It just means this architecture now essentially requires full backup capacity," he said.

In a follow-up message to Utility Dive, Talley clarified that by "full backup" he means resources capable of carrying the load off-grid for a meaningful period, not just handling brief interruptions. He cautioned that this is an "untested assumption" and pointed to the pending co-location application submitted by Amazon and Vistra—to build a data center campus next to the Comanche Peak nuclear plant southwest of Fort Worth—as a case to watch. "How ERCOT and the commission handle that arrangement will be highly illustrative," Talley said.

The decision requires the data center to be more flexible than traditional industrial loads. The order states that ERCOT should provide notice 60 minutes in advance "when feasible," while allowing operators to voluntarily commit to a faster 10-minute response.

By prohibiting the project from being compensated for load reduction during grid emergencies, the order distinguishes mandatory emergency curtailment from voluntary grid services. The ruling treats rapid shutdown capability as a reliability requirement for operating behind a generation facility.

Crusoe, the developer of the AI data center, and Ensign, the large-load customer planning to operate the site, argued that forcing the entire site offline is disproportionate and that additional curtailment is unnecessary following the reliability conditions of the prior co-located wind project. The commission largely adopted the administrative law judge's recommendation, including revisions by Chairman Thomas Gleeson, concluding that allowing the second load to remain online while the first is curtailed would undermine the goal of ensuring generation capacity is available to the grid during emergencies.

The case also attracted filings from Texas Competitive Power Advocates and natural gas producer BKV, who argued the proposed framework could hinder future co-location projects. PUCT staff contended these parties lacked standing under applicable regulations, and the commission's final order did not address their arguments.