That timing leaves Batch Zero projects largely outside the reach of new building standards, water mandates, or retroactive cost-shifting requirements
Decision Focus
Texas Governor Greg Abbott has directed ERCOT and the Public Utility Commission of Texas to deliver recommendations by July 17 on how to prevent data center expansion from burdening residential ratepayers. His proposals include mandatory water-use reporting, water-efficient cooling requirements, repeal of sales tax exemptions, setback standards, and a proposed ban on new data centers in rural areas. Yet ERCOT is expected to complete its Batch Zero interconnection approvals around April 2027—before any substantive legislation from the regular legislative session could take effect. The operational signal: projects already inside Batch Zero hold a structural regulatory advantage over later entrants. Projects that are not will likely face materially different terms of entry into Texas by 2027.
90-Second Brief
Today, eRCOT is tracking more than 438,000 MW of large load connection requests, with nearly 89 percent originating from data centers. The Batch Zero process, the first batch-style interconnection assessment by any U.S. ISO, moves toward final approval in April 2027, while the next regular Texas legislative session cannot produce binding legislation until April or May 2027 at the earliest. That timing leaves Batch Zero projects largely outside the reach of new building standards, water mandates, or retroactive cost-shifting requirements.
What Is Really Happening?
The scale of demand concentrated in the Texas grid is the root issue. A queue approaching 438 GW—with data centers accounting for roughly 89 percent—represents a load signal unlike anything the Texas interconnection system has previously processed. Batch Zero was designed as a structural response: rather than processing each large load request individually, ERCOT applies a single batch assessment to an entire cohort. No other U.S. ISO has attempted this approach at this scale, and ERCOT’s final transmission plan covering all Batch Zero projects is not expected until Fall 2027.
The political pressure Abbott is applying reflects a real cost-allocation problem, not generic opposition to data centers. Texas residential electricity prices rose 30 percent from 2020 to 2025, driven substantially by transmission infrastructure costs. Data center expansion is concentrating new transmission build-out in ways that ratepayers are being asked to absorb. Abbott’s July 17 memo deadline and his July 31 directive to the PUC to initiate action on residential transmission costs are both tied to that cost structure.
The calendar constraint is structurally precise. Without a special session—which Abbott has not called and which lacks confirmed legislative support—the earliest any new data center guardrail law could take effect is April or May 2027. By that point, ERCOT will have completed the Batch Zero studies. Industry counsel involved in the process considers it unlikely that 2027 legislation would apply to Batch Zero projects in any operationally meaningful way. Retroactive requirements face constitutional constraints under Texas law, and while some precedent exists—the 2021 weatherization mandate following Winter Storm Uri—that pathway requires extraordinary political consensus that does not currently exist.
Why It Matters for Global Heads of Data Center Energy
If your portfolio includes projects already inside Batch Zero, the immediate regulatory exposure is lower than the headline political pressure implies. Abbott’s proposals are framed as prospective, and the retroactive route faces legal and political resistance.
Water compliance is the most credible near-term obligation regardless of queue position. Abbott explicitly calls for water-use reporting requirements and water-efficient cooling mandates. A University of Texas study projects data centers could consume up to 9 percent of the state’s water supply by 2040—a figure with enough policy durability to survive multiple legislative sessions. Mandatory reporting requirements face a lower legal threshold than construction mandates and are more likely to be applied broadly, including to facilities already operating.
The sales tax exemption repeal is a direct cost-basis exposure for anything not yet built. Texas has used these exemptions as a primary tool to attract capital investment, and their elimination—even on a prospective basis—restructures the economics of expansion for projects still in the capital program. Combine that with potential transmission cost-recovery mechanisms that shift infrastructure charges directly to large loads rather than spreading them across residential ratepayers, and the all-in cost of Texas capacity for post-Batch Zero cohorts is structurally higher than the site selection models used in 2023 and 2024 assumed.
Forward View
Three fronts warrant active monitoring. First, the July 17 memo from ERCOT and the PUC to Abbott will define the regulatory vocabulary that shapes the 2027 legislative session. Whatever framing those agencies use for “fair cost allocation” will become the legislative template—review it immediately upon publication.
Second, the Fall 2027 Batch Zero final transmission plan is the structural marker for what grid capacity under confirmed data center load actually costs. If that plan reveals significant transmission buildout attributable to large load growth, it will accelerate the political case for direct cost recovery and weaken resistance to retroactive reporting requirements that go beyond water.
Third, Abbott’s rural ban proposal deserves separate tracking from the legislative calendar. If he pursues that restriction through PUC rulemaking or executive action rather than legislation, it could affect site selection and land control decisions without waiting for the 2027 session.
What Is Still Uncertain
Whether Abbott calls a special session remains the largest near-term variable. It is unconfirmed, and legislative leaders have not publicly committed to one. The constitutional threshold for retroactive legislation—constrained but not impossible under Texas law—remains ambiguous until tested. How ERCOT allocates actual power among Batch Zero applicants is also unresolved: while the combined queue runs to roughly 100 GW in stated requests, credible estimates place actual usage at 20 to 50 GW, meaning a substantial share of queue positions will not convert to live load.
The political coalition is fragmented. Rural Republicans are aligned with Democrats on guardrail legislation, while urban and suburban Republicans have moved to limit local government authority over data center siting. That split compresses the probability of comprehensive legislation but does not eliminate targeted measures on water, taxes, or transmission cost recovery.
One Question for Your Team
If Texas enacts mandatory water-use reporting and repeals data center sales tax exemptions in 2027, which projects in your current Texas pipeline remain viable at the revised cost basis—and which are marginal enough to require a site selection review before ground is broken?
Sources
- Eenews — Push to regulate Texas data centers crimped by calendar – E&E News by POLITICO (Link)
