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Data Center Projects in Cameron County, Texas
Last verified: October 27, 2026 · 1 tracked project · 7 tracked records
Overview
Texas Data Center Watch tracks one data center project in Cameron County: the Fluidstack Cameron County AI data center campus near Harlingen / Rio Hondo (unincorporated, near Valley International Airport), listed as under construction.
County worksite permit (Sep. 10, 2026): Cameron County issued a worksite permit for site clearing, grading, utilities and stormwater. The county says future permits are required before building construction, and that Fluidstack agreed to voluntarily comply with County Resolution No. 2026R04056 and the Governor's data center directives. Cameron County says it is not providing a tax abatement (Cameron County).
Company figures: Fluidstack's community page (dated Sep. 21, 2026) says first-phase construction has begun, with a planned first phase of $4B supporting up to 1.5 GW, closed-loop cooling supplied by East Rio Hondo Water Supply Corporation, more than 2,500 construction jobs and several hundred permanent positions, and that it requested and received no local property tax abatements or county incentives (Fluidstack). KRGV, citing the company, reports more than 1,100 acres and dates the company release Sep. 10; it also reports that about a week earlier Harlingen city commissioners tabled a drainage agreement to route stormwater into a city canal, that U.S. Rep. Vicente Gonzalez opposes data centers in the region until water and grid supply are assured, and that the Harlingen mayor said the city had no authority over the site (KRGV).
As of Oct. 16, 2026, Texas Data Center Watch hasn't opened a TDLR building registration for this campus.
Tracked projects
| Project | Developer | Status | Capacity / size | Investment | Key dates | Sources |
|---|---|---|---|---|---|---|
| Fluidstack Cameron County AI data center campus, Near Harlingen / Rio Hondo (unincorporated; east of FM 509, west of FM 106, near Valley International Airport) | Fluidstack | Under construction | First phase planned to support up to 1.5 GW (company); more than 1,100 acres (KRGV, citing company release) | $4B first phase (company) | Sep 10 2026 Cameron County issued a worksite permit (site clearing, grading, utilities, stormwater) · county says future permits are required before building construction, and Fluidstack agreed to voluntarily comply with County Resolution No. 2026R04056 and the Governor's data center directives (Cameron County release, official) · about a week earlier Harlingen city commissioners tabled a drainage agreement to route stormwater into a city canal (KRGV) · Harlingen's Sep 2 2026 minutes record a unanimous vote to table the Fluidstack stormwater discharge agreement on condition Fluidstack hold an evening town hall, and a 4-1 resolution requiring commission approval for outside-city drainage connections over one acre (official) · Fluidstack announced start of first-phase construction (company page dated Sep 21 2026 · KRGV dates the release Sep 10 2026) | Cameron County · Fluidstack · KRGV · Harlingen minutes |
Recorded benefits and concerns (Fluidstack Cameron County AI data center campus):
- Benefits: More than 2,500 construction jobs and several hundred permanent positions (company); company says it requested and received no local property tax abatements or county incentives, and Cameron County says it is not providing a tax abatement (official)
- Concerns: Water in a water-short region: closed-loop cooling supplied by East Rio Hondo Water Supply Corporation (company); U.S. Rep. Vicente Gonzalez opposes data centers in the region until water and grid supply are assured (KRGV); Harlingen mayor says the city had no authority over the site (KRGV)
Sources for each project are linked in the table. Figures labeled "company" come from the developer.
Record timeline
| Date | Type | What happened | Source |
|---|---|---|---|
| Nov 4, 2026 | City council | MyRGV: Brownsville passed first reading of a 90-day data center moratorium Oct 7 (unanimous); second reading Nov 4, effective Nov 5. | myrgv.com |
| Oct 21, 2026 | City council | Harlingen agenda item 10n (Oct 21, 5:30 p.m.): interlocal drainage maintenance and flood control agreement with Cameron County; agenda does not name Fluidstack. | Harlingen agenda |
| Oct 20, 2026 | News | MyRGV: county voted 3-1 Oct 6 for a drainage interlocal with Harlingen; $7M canal widening paid by Fluidstack for its stormwater; Harlingen votes Oct 21. | myrgv.com |
| Sep 21, 2026 | Company announcement | Fluidstack: construction begun on $4B first phase planned for up to 1.5 GW; closed-loop cooling; no abatements requested (company). | Fluidstack |
| Sep 10, 2026 | County permit | Cameron County issues Fluidstack worksite permit for site work near Valley International Airport; building permits still required; no county tax abatement. | Cameron County |
| Sep 10, 2026 | News | KRGV: Fluidstack starts $4B first phase on 1,100+ acres; Harlingen had tabled a canal drainage deal; Rep. Gonzalez opposes over water. | KRGV |
| Sep 2, 2026 | City council | Harlingen minutes: Fluidstack stormwater discharge agreement tabled unanimously pending a town hall; 4-1 resolution requires commission approval of outside-city drain connections. | Harlingen minutes |
What's next
These dates come from the tracker.
- Oct. 21, 2026 (outcome not yet found): Harlingen City Council agenda item 10n was scheduled, an interlocal drainage maintenance and flood control agreement with Cameron County. The agenda doesn't name Fluidstack (Harlingen agenda). MyRGV reports the county voted 3-1 on Oct. 6 for the interlocal, and that the $7M canal widening would be paid by Fluidstack for its stormwater (myrgv.com).
- Nov. 4, 2026: Brownsville second reading of a 90-day data center moratorium, effective Nov. 5 if passed. MyRGV reports the first reading passed unanimously on Oct. 7 (myrgv.com).
- Statewide permit pause: Under the Governor's Sept. 21 order halting permits sought by data centers (Governor's office), TCEQ sent its Oct. 19 compliance letter: it says permits for infrastructure directly supporting data centers are paused, pending applications are being screened, and claimed authorizations are suspended where possible (TCEQ letter). The Texas Tribune reported Oct. 20 that TCEQ says stormwater permits flagged by Public Citizen were suspended (Texas Tribune). On Oct. 21 TCEQ posted that its STEERS e-filing system for automatic authorizations is temporarily shut down so staff can check whether applications relate to data centers (TCEQ STEERS notice); the Texas Tribune reports a spokesman said applications must be physically provided (Texas Tribune, Oct. 21). The tracker doesn't show whether any project in Cameron County has a pending TCEQ permit.
Frequently asked questions
What data center projects are tracked in Cameron County, Texas? One: Fluidstack Cameron County AI data center campus near Harlingen / Rio Hondo (unincorporated; east of FM 509, west of FM 106, near Valley International Airport), listed as under construction.
Has Cameron County approved a tax abatement for Fluidstack? No. The county's worksite-permit release says it is not providing a tax abatement, and Fluidstack says it requested and received no local property tax abatements or county incentives (Cameron County; Fluidstack).
Is Fluidstack under construction? The company says first-phase construction has begun. Cameron County's Sep. 10 worksite permit covers site work only; the county says future permits are required before building construction (Fluidstack; Cameron County).
How big is the Fluidstack Cameron campus? Company figures: first phase planned to support up to 1.5 GW and $4B; KRGV, citing the company, reports more than 1,100 acres. Those are company figures (Fluidstack; KRGV).
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