As of May 2026, San Antonio City Council is actively discussing restrictions on where data centers can be built within city limits. Council members have formally cited water and power consumption as the driving concerns. No ordinance has passed yet — but for manufacturers in Bexar County, the formal signaling matters, and the stakes go well beyond real estate.
This is a utility capacity story, not a tech industry story.
What the Council Action Actually Is
The proposal would shift data centers from flexible industrial and commercial zoning classifications to a special-use permit requirement. That procedural change is significant.
Under current code, a data center developer picks a qualifying zone and builds. Under a special-use permit model, the applicant must demonstrate compatibility with surrounding infrastructure, and the city can attach conditions or deny the application outright. That shifts burden from the city to the developer and creates a formal review mechanism for evaluating power draw and water consumption project by project.
San Antonio is not alone in this move. Phoenix and Austin have both taken steps to restrict or condition data center development in response to resource strain. The Sun Belt pattern is real, but local context shapes the outcome — and San Antonio's context is structurally different from most Texas cities.
Why CPS Energy Changes the Math Here
In Dallas, Houston, or most of Texas, a city council does not control the electric utility. Oncor, AEP Texas, and other investor-owned utilities answer to the Public Utility Commission of Texas, not to city hall. Zoning decisions and utility planning operate on separate tracks.
San Antonio is different. CPS Energy is municipally owned and reports directly to San Antonio City Council.
That means the same political body raising concerns about data center power consumption also governs rate structures, load prioritization, and long-term resource planning at the utility. That is an unusual concentration of authority — and it makes the council's formal concern about power draw more than symbolic.
CPS Energy's integrated resource planning (IRP) documents from 2024 and 2025 show the utility evaluating how to accommodate large new industrial loads without compromising reliability for existing customers. The IRP process is where load prioritization decisions get made. According to reporting by the San Antonio Express-News, CPS has been managing rapidly growing interconnection requests tied to data center development.
No specific decisions on load limits, industrial rate changes, or interconnection queue prioritization have been confirmed. But the planning process is underway, and its outcome will affect every large power customer in the service territory.
The Shared Resource Problem
San Antonio's data center growth has been driven partly by CPS Energy's renewable portfolio, available land, and lower costs compared to DFW. According to ERCOT, data centers are among the fastest-growing categories of electricity demand in Texas, with interconnection queues growing substantially in both 2024 and 2025.
The grid and water system serving those data center campuses are the same ones serving Toyota's assembly plant, Port San Antonio's defense and aerospace tenants, and thousands of smaller manufacturers along the I-35 corridor.
Water is not a peripheral concern. Large data centers using evaporative or cooling-tower systems consume millions of gallons annually, according to public disclosures from the San Antonio Water System. That draw comes from the Edwards Aquifer, already under pressure from drought and regional population growth. The Edwards Aquifer Authority manages withdrawal permits, and that allocation system has hard constraints.
The resource competition is structural, not theoretical.
What Manufacturers Should Be Watching
The zoning discussion is the visible signal. The CPS Energy IRP process is the mechanism that will determine actual outcomes for industrial customers.
Key areas to monitor:
- CPS Energy's large-load interconnection queue. If your operation is planning an expansion requiring a new or upgraded service connection, timeline and cost may be affected by where data center load additions land in that queue.
- Rate case activity. CPS Energy has not announced a rate increase tied to data center infrastructure investment. But utilities that absorb large new transmission and generation costs eventually recover them from ratepayers. Watch the IRP outputs and any rate filings.
- SAWS industrial water allocation. Manufacturers with significant cooling or process water needs should understand their current allocation standing and what a tighter SAWS review environment could mean for expansion permits.
- Bexar County ETJ and neighboring counties. If city zoning restrictions push data center development into the extraterritorial jurisdiction or into Comal and Guadalupe counties, grid pressure does not disappear. The transmission infrastructure serving those corridors still connects back to the same CPS service territory.
One structural tension worth noting: the Texas Comptroller's sales tax exemption on data center electricity and equipment operates at the state level. Local zoning cannot eliminate it. That creates ongoing friction between state incentive policy and municipal resource management. San Antonio will not be the last Texas city to face this conflict.
The Practical Planning Implication
The council's action has not resolved anything yet. What it has done is surface a resource allocation contest already underway inside CPS Energy's planning process.
For a manufacturer in San Antonio planning a facility expansion, a new production line with significant power requirements, or a cooling system upgrade, the relevant question is not whether data centers win or lose the zoning fight. The question is whether CPS Energy's infrastructure investment and interconnection timeline keeps pace with combined demand — and whether your expansion is in the queue before or after that math gets harder.
That is a site planning and capital budgeting question. It should be on the table now, not after a rate case or an SAWS allocation review forces it.