Vantage/VoltaGrid San Antonio Off-Grid

Power

Power and the grid

None energized or contracted yet · 412.8 MW permitted (totals add sources with a stated size; they can overlap)

Gas engines, Omicron Drive (VoltaGrid)State registration, contested (per the complaint)

264.8 MW

80 Jenbacher J620 engines of 3.31 MW each, per VoltaGrid's Sept. 2024 state standard-permit registration as described in the complaint; engine types changed in a June 2026 revision Court filing · Sept. 2026

Gas engines, Rogers Road (VoltaGrid)State registration, contested (per the complaint)

148 MW

16 Jenbacher engines of 3.31 MW and 20 of 4.81 MW, per VoltaGrid's Sept. 30, 2025 registration as described in the complaint Court filing · Sept. 2026

Permitted

Backup generators (emergency use, not a power supply)

Diesel backup generators (backup, not supply) Alleged
455 MW; about 455 MW across both campuses, per the complaint; for emergencies, not counted as supply Court filing · Sept. 2026

On-site generation on file

Air permit (backup) Texas Commission on Environmental Quality (TCEQ) · 175523 (Project 370963; revision… · Permit by Rule registration for diesel… · Feb. 29, 2024
Vantage Data Centers TX11, LLC Permit by Rule registration for the TX1 (Omicron Drive) campus's diesel backup generators: 22 generators registered February 29, 2024; a revised registration on March 31, 2025 brought the… Court filing · Feb. 2024
Air permit (prime) Texas Commission on Environmental Quality (TCEQ) · 177637 (Project 380453) · EGU Standard Permit registration SAT-1… · Sept. 20, 2024
air permit (prime) - VoltaGrid LLC registration SAT-1 under the TCEQ Electric Generating Unit (EGU) Standard Permit for the Omicron Drive power plant, 14270 Omicron Drive, San Antonio (Bexar County): 80 new Jenbacher… Court filing · Sept. 2024
Air permit (prime) Texas Commission on Environmental Quality (TCEQ) · SAT-2 (permit number not stated in… · EGU Standard Permit registration SAT-2… · Sept. 30, 2025
air permit (prime) - VoltaGrid LLC registration SAT-2 under the TCEQ EGU Standard Permit for the Rogers Road power plant, 5207 Rogers Road, San Antonio: 16 Jenbacher engines at 3,310 kWe each and 20 Jenbacher engines at… Court filing · Sept. 2025

+3 more

Air permit (prime) Texas Commission on Environmental Quality (TCEQ) · 181707 · EGU Standard Permit registration SAT-2… · Sept. 30, 2025
State agency · Sept. 2025
Public Citizen and Sierra Club sued Vantage Data Centers Management Company LLC, Vantage… U.S. District Court, Western District of Texas · Case No. 5:26-cv-06032 · Clean Air Act citizen suit filed · Sept. 21, 2026
Public Citizen and Sierra Club sued Vantage Data Centers Management Company LLC, Vantage Data Centers TX11 LLC, Vantage Data Centers TX21 LLC, and VoltaGrid LLC, alleging the campuses and their dedicated gas plants were… Court filing · Sept. 2026
Complaint alleges both San Antonio campuses were constructed and are operating without… U.S. District Court, Western District of Texas · Case 5:26-cv-06032 · Federal citizen-suit complaint filed… · Sept. 21, 2026
Complaint alleges both San Antonio campuses were constructed and are operating without major-source NSR permits; paras 252 and 275 allege each campus is at least partially operational based on the defendants' own… Court filing · Sept. 2026

Backup generators (emergency use, not a power supply)

Air permit (backup) Texas Commission on Environmental Quality (TCEQ) · 175524 (Project 370964; revision… · Permit by Rule registration for diesel… · Feb. 28, 2024
air permit (backup) - Vantage Data Centers TX21, LLC Permit by Rule registration for diesel backup generators at the Rogers Road campus (5207 Rogers Road): 33 generators registered February 28, 2024; a revised… Court filing · Feb. 2024

Is it running?

Evidence from space

NO₂ over the site, net of the rural background, was lower in July–September 2026 (8 µmol/m²) than a year earlier (10), a 21% drop that is within normal swings at this level; the rural background stayed flat (18 and 17). The satellite sees no new combustion large enough to stand out here.

See all campuses checked →

NO₂ over the campus and over open country (µmol/m²)

Lines: 7-day (daily) / 3-week (weekly) averages; gaps from cloud filled by straight-line interpolation; dots are raw readings. Shaded: July–September 2025 and 2026, averaging 10 and 8 µmol/m² above open country (0.8×).

What else could explain it

Cities, highways, oil and gas fields and power plants in or near the box also emit NO₂. Comparing the same months a year apart removes steady sources; a new source nearby would not cancel.
Weather moves NO₂ from day to day (wind, sunlight, cloud), and it builds up in winter. Subtracting the background box and comparing the same season a year apart removes most of that.

How this works: the Sentinel-5P satellite measures NO₂ in the air over every point on Earth once a day, around 1:30 p.m. local time, in pixels about 5.5 by 3.5 km. NO₂ comes from burning fuel (turbines, engines, traffic, power plants), so a rise over a site that open country does not share points to new combustion there. It shows combustion activity, not megawatts. The site box is about 15 km across; the background box is open country about 62 km away. We use only high-quality readings and drop days or weeks when cloud hides more than half of either box. Data: Copernicus Sentinel-5P (ESA), processed with the Copernicus Data Space Ecosystem Sentinel Hub statistics service.

Permits

Permits checklist

4 contested

Approvals a campus like this normally needs (including an air permit for backup or on-site generators), and what we found.

!
Air registration for gas engines (Omicron) Contested
Texas Commission on Environmental Quality · Sept. 20, 2024: 80 engines, 264.8 MW, as described in the complaint; the plaintiffs argue the plants were permitted as minor sources and need stricter permits; the filing itself was not inspected Court filing · Sept. 2026
!
Revised air registration (Omicron) Contested
Texas Commission on Environmental Quality · June 24, 2026: changes gas engine types and adds two black-start diesel units (per the complaint); revised list not inspected Court filing · Sept. 2026
!
Air registration for gas engines (Rogers Road) Contested
Texas Commission on Environmental Quality · Sept. 2025: 36 Jenbacher engines, 148 MW, as described in the complaint; the filing itself was not inspected Court filing · Sept. 2026
!
Diesel backup generator registrations (both campuses) Contested
Texas Commission on Environmental Quality: expanded from 22 to 86 units at Omicron Drive and from 33 to 65 at Rogers Road, per the complaint Court filing · Sept. 2026

Risks

What could slow it down

High
Injunction request
The plaintiffs ask a federal court to halt construction and operation of both campuses. see Lawsuits
High
Diesel as primary power (allegation)
The plaintiffs allege Vantage began operating the Rogers Road campus by running its diesel backup generators as a primary power source. This is the plaintiffs' claim, not a finding. Court filing · Sept. 2026
High
Air permit exposure
The suit argues the gas plants should have faced stricter permits, and the Omicron registration was revised in June 2026, so the current engine list is unverified. see Permits
Medium
Unproven capacity figures
The 405 MW gas and 455 MW diesel totals are the plaintiffs' figures for what is disclosed to the state across both campuses; the registrations the complaint describes are 264.8 MW at Omicron Drive and 148 MW at Rogers Road, and the revised Omicron engine list has not been inspected. Court filing · Sept. 2026

Lawsuits

1 case on record

Pending; responses due Oct. 29, 2026 Public Citizen and Sierra Club v. Vantage Data Centers Management Co., Vantage TX11, Vantage TX21 and VoltaGrid
U.S. District Court, Western District of Texas, No. 5:26-cv-06032 (Clean Air Act) · filed Sept. 21, 2026 Court filing · Sept. 2026
seeks to halt construction and operation of both campuses and alleges Vantage began operating Rogers Road on its diesel backup generators as primary power; answers were first due Oct. 14–15 before the court extended the deadline; the Environmental Integrity Project is counsel

Timeline

What happened, and what is due

SitePaper trailConstructionPowerPermitsMoneyLegalUpcoming

Sept. 20, 2024
Permits An air registration is filed with the state environmental agency for 80 gas engines (264.8 MW) at the Omicron Drive campus, according to the complaint Court filing · Sept. 2026
Oct. 2024
Construction Construction begins on the data centers; the court records that the parties agree it started about two years before Oct. 2026 Court filing · Oct. 2026
Sept. 2025
Permits An air registration for 36 gas engines (148 MW) at the Rogers Road campus is filed with the state, according to the complaint Court filing · Sept. 2026
June 24, 2026
Permits The Omicron registration is revised: gas engine types change and two black-start diesel units are added (per the complaint) Court filing · Sept. 2026
Sept. 21, 2026
Legal Public Citizen and Sierra Club file a Clean Air Act suit and an injunction motion to halt both campuses; answers were first due Oct. 14–15 Court filing · Sept. 2026
Sept. 29, 2026
Legal VoltaGrid's disclosure names VG Enterprise Holdings as its corporate parent Court filing · Sept. 2026
Oct. 2, 2026
Legal The court extends the defendants' response deadline to Oct. 29; it does not grant the requested construction halt Court filing · Oct. 2026
Oct. 29, 2026
Legal Defendants' responses to the complaint and injunction motion are due Court filing · Oct. 2026

Construction activity

Building activity by quarter

Since Feb. 2024: 4 FAA filings (Feb. 2024 to March 2026): tallest permanent building 85 ft (filed Feb. 2024) and tallest crane 350 ft (March 2026).

FAA filings

’24

’25

’26

Dot size: records in the quarter, largest = 2. Two-digit years mark each first quarter.

The buildings

Specs

2 campuses

14270 Omicron Drive (78245) and 5207 Rogers Road (78251), San Antonio

Court filing · Sept. 2026

80 engines

Jenbacher J620 gas units in the 2024 Omicron registration (3.31 MW each); engine types changed in the 2026 revision

Court filing · Sept. 2026

36 engines

Jenbacher gas units in the 2025 Rogers Road registration (16 of 3.31 MW, 20 of 4.81 MW)

Court filing · Sept. 2026

151 diesel units

backup generators: 86 at Omicron Drive (up from 22) and 65 at Rogers Road (up from 33), per the complaint

Court filing · Sept. 2026

Other data centers within 40 km (17)

This campus (footprint)

33 ac

7400 Potranco Rd Data Center

9 ac

San Antonio 3 Data Center

3 ac

Iron Mountain

3 ac

Corscale Data Centers

1 ac

San Antonio 4 Data Center

1 ac

Who is involved

Owners, partners and builders

Owners and developers

Vantage Data Centers Management Company, with campus companies TX11 (Omicron Drive) and TX21 (Rogers Road)

Power

VoltaGrid LLC: on-site gas engine power provider for both campuses
VG Enterprise Holdings LLC: VoltaGrid's corporate parent

Plaintiffs

Public Citizen and Sierra Club, represented by the Environmental Integrity Project

Still unknown

Open questions

Any named tenant, and how much of the 80 MW of IT is running.
The current engine list after the June 2026 revision.
Any grid service agreement, and the outcome of the injunction motion.

Where this comes from

185 records from 31 documents

Drawn from court filings, news reports, state agency records, public and commercial datasets, company statements, our own analysis and local government records, each kept with its date and source. The bar shows documents by type.

Court filing 13News report 9State agency 6Dataset 3Company 1Analysis 1Local government 1

Evidence

Every quote behind this page

Grade key: A = the primary record itself (permit, filing, exhibit) · B = a dated official statement · C = news reporting. Map distances are our own measurements on OpenStreetMap and carry no grade. Allegations in lawsuits are marked as such in the quotes.

Power (46)

EIA campd registration: not stated
“monitors the current status of existing and proposed generating units at electric power plants with 1 megawatt or greater of combined nameplate capacity”
State agency · Oct. 2026 · grade A
Project identity: Two Vantage Data Centers campuses in west San Antonio, TX with VoltaGrid behind-the-meter gas plants: 14270 Omicron Drive (buildings TX11 / TX12) and 5207 Rogers Road (buildings TX21 / TX22); campuses b
“This is a citizen enforcement action under the Clean Air Act to stop ongoing violations of federal preconstruction permitting requirements and federally enforceable provisions of the Texas State Implementation Plan ('Texas SIP')”
Court filing · Sept. 2026 · grade A
Operator: Vantage Data Centers
“Vantage Data Centers powers, cools, protects and connects the technology of the world's well-known hyperscalers, cloud providers and large enterprises”
Company · Oct. 2026 · grade B
Vantage-VoltaGrid partnership announced: more than 1 GW of prime power across Vantage's North America portfolio; San Antonio is the showcased constrained-grid deployment.
“Partnering with VoltaGrid is an ideal solution to deploy capacity in constrained power markets to meet customer demand”
Company · Oct. 2026 · grade B
On-site generation: 405 MW
“Combined approximately 405 MW gas generation, plus approximately 455 MW diesel backup (allegation); Doc. 1 pp. 1-2 ¶1”
Court filing · Sept. 2026 · grade B
On-site generation: 455 MW
“plus approximately 455 MW diesel backup (allegation); Doc. 1 pp. 1-2 ¶1”
Court filing · Sept. 2026 · grade B
On-site generation: 264.8
“VoltaGrid stated that it would install eighty (80) new 3,310-kilowatt-electric Jenbacher J620 natural gas engines at the Omicron Drive campus to produce 264.8 megawatts”
Court filing · Sept. 2026 · grade B
On-site generation: 148
“install 16 Jenbacher engines with a capacity of 3,310 kWe each and 20 Jenbacher engines with a capacity of 4,810 kWe each at the Rogers Road Campus to produce 148 MW”
Court filing · Sept. 2026 · grade B
IT capacity: 80
“Rogers Road would house 48 MW of IT infrastructure ... Omicron Drive would house 32 MW of IT infrastructure”
Court filing · Sept. 2026 · grade B
On-site units backup: 151
“bringing the total from 22 to 86 generators ... bringing the total from 33 to 65 generators”
Court filing · Sept. 2026 · grade B
Disclosed generating capacity at the two San Antonio campuses, per the complaint (paras 1-2): gas-fired capacity as currently disclosed to TCEQ approximately 405 MW combined; diesel backup generators approximately 455 MW
“is approximately 405 MW, which is enough electricity to power a city the size of Richmond, Virginia”
Court filing · Sept. 2026 · grade B
DESIGN INTENT ONLY - not actual operating hours. Complaint para 18 alleges the defendants intend to operate the campuses 365 days/year, 24 hours/day, equating to 8,760 hours per year at the power plants (and up to 876 ho
“Defendants intend to operate their data center campuses 365 days a year, 24 hours a day, without interruption. This equates to 8,760 hours per year”
Court filing · Sept. 2026 · grade B
PLAINTIFF-SIDE filing quoting the operator's revised TCEQ registration - POTENTIAL TO EMIT, not actual emissions. SAT-1 revision (Jun 24, 2026; engine-type change plus two black-start diesel units), modified Omicron Driv
“On June 24, 2026, Defendant VoltaGrid applied to TCEQ to modify its EGU Standard Permit registration for the Omicron Drive power plant”
Court filing · June 2026 · grade B
On-site generation: 148 MW
“produce 148 MW of total electricity”
Court filing · Sept. 2025 · grade B
PLAINTIFF-SIDE filing quoting the operator's own TCEQ registration - POTENTIAL TO EMIT, not actual emissions. Rogers Road power plant (SAT-2, Sep 30, 2025): 16 x 3,310-kWe + 20 x 4,810-kWe Jenbacher engines = 148 MW tota
“to install 16 Jenbacher engines with a capacity of 3,310-kilowatt-electric (kWe) each and 20 Jenbacher engines with a capacity of 4,810 kWe each”
Court filing · Sept. 2025 · grade B
On-site generation: 264.8 MW
“it would install eighty (80) new 3,310-kilowatt-electric Jenbacher J620 natural gas engines at the Omicron Drive campus to produce 264.8 megawatts (MW) of electricity”
Court filing · Sept. 2024 · grade B
On-site generation: 264.8 MW
“Original Omicron plan: 80 Jenbacher J620 gas engines x 3,310 kWe = 264.8 MW, September 20, 2024 (allegation); Doc. 1 p. 30 ¶¶184-186”
Court filing · Sept. 2024 · grade B
Generator maker and model: INNIO Jenbacher J620, 3,310 kWe each (original Omicron plan; engine types changed in the June 24, 2026 revision)
“Original Omicron plan: 80 Jenbacher J620 gas engines x 3,310 kWe (allegation); June 24, 2026 Omicron revision changes gas-engine types”
Court filing · Sept. 2024 · grade B
Generating units on the permit: 80
“Original Omicron plan: 80 Jenbacher J620 gas engines (allegation); Doc. 1 p. 30”
Court filing · Sept. 2024 · grade B
PLAINTIFF-SIDE filing quoting the operator's own TCEQ registration - POTENTIAL TO EMIT, not actual emissions. Omicron Drive power plant (SAT-1, TCEQ permit 177637, Sep 20, 2024): 80 x 3,310-kWe Jenbacher J620 engines = 2
“VoltaGrid stated that it would install eighty (80) new 3,310-kilowatt-electric Jenbacher J620 natural gas engines at the Omicron Drive campus”
Court filing · Sept. 2024 · grade B
IT capacity: 32 MW
“That project - a 32MW two-story building spanning 242,665 sq ft (22,545 sqm) - is set to go live in early 2026”
News report · Oct. 2026 · grade C
IT capacity: 96 MW
“new Vantage data center at [the] TX1 campus consisting of [a] two-story building with up to 96MW of critical IT capacity”
News report · Oct. 2026 · grade C
Utility service: not stated
“Negative searches of CPS Energy, City of San Antonio and Bexar County records on 2026-10-18 located no executed electric service agreement or contracted MW for the TX1 campus”
grade C
On-site generation: 264.8 MW
“Defendant VoltaGrid stated that it would install eighty (80) new 3,310-kilowatt-electric Jenbacher J620 natural gas engines at the Omicron Drive campus to produce 264.8 megawatts (MW) of electricity”
Court filing · Oct. 2026 · grade C
On-site generation: not stated
“On March 31, 2025, Vantage Data Centers TX11, LLC submitted a revised Permit by Rule registration notifying TCEQ it would construct an additional 64 diesel backup generators at the Omicron Campus, bringing the total from 22 to 86 generators”
Court filing · Oct. 2026 · grade C
Power plan: behind-the-meter on-site generation (off-grid)
“The power plants for these projects, at 14270 Omicron Drive and 5207 Rogers Road in San Antonio, are called behind the meter plants because they are dedicated to the data centers, instead of serving the regional power grid”
News report · Oct. 2026 · grade C
Construction stage: Building 1 (TX11) operating; Building 2 (TX12) under construction; Building 3 (TX13) planned, air permits only
“Building 1 operational; Roads around Building 1 complete, all cooling and side generator equipment construction has since finished as well”
Dataset · Oct. 2026 · grade C
Stage: operating-partial
“Air-quality permits reveal a planned third building (TX13), though there are no signs of construction yet”
Dataset · Oct. 2026 · grade C
Building tx11 area: 242665 sq ft
“That project - a 32MW two-story building spanning 242,665 sq ft (22,545 sqm) - is set to go live in early 2026”
News report · Oct. 2026 · grade C
Jurisdiction note: Air-quality permitting sits with TCEQ (state); no city or county rezoning, abatement or development agreement for the campus was located
“Negative searches of Bexar County Commissioners Court and City of San Antonio records on 2026-10-18 located no approval, abatement or agreement naming Vantage or TX1”
grade C
Litigation status: Clean Air Act citizen suit filed Sep 21, 2026 (W.D. Tex. No. 5:26-cv-06032) seeking to halt construction and operation pending major-source permitting
“Three environmental groups today filed a federal lawsuit against the developers of a pair of data center campuses with gas-fired power plants for building the massive projects without required permits and pollution-control technology”
News report · Oct. 2026 · grade C
VoltaGrid registers the 264.8 MW behind-the-meter gas plant (SAT-1) under the TCEQ EGU standard permit - the campus's prime power source, after CPS Energy grid supply proved insufficient/unavailable at the needed scale.
“On September 20, 2024, Defendant VoltaGrid sought authorization under the TCEQ EGU Standard Permit to generate electricity to power the Omicron Drive Campus data center”
Court filing · Oct. 2026 · grade C
TX12 (Building 2) filed with TDLR: up to 96 MW critical IT, 432,800 sq ft, $276.8M, completion Aug 2027; on-site generators expected to be deployed for TX12.
“Vantage announced its TX12 project in September of last year, where on-site generators are expected to be deployed”
News report · Oct. 2026 · grade C
EIP report 'The Power Behind AI' lists the Vantage/VoltaGrid San Antonio plants among at least 74 behind-the-meter gas plants being built nationally for data centers, and names the minor-source permitting pattern as a Cl
“that revealed that the Vantage/VoltaGrid power plants are among at least 74 being built nationally for the rapidly growing data center industry as behind-the-meter gas plants”
News report · Oct. 2026 · grade C
Third building TX13 is revealed by air-quality permits but shows no construction (Epoch); its TCEQ authorizations face the Abbott issuance pause and the pending major-source litigation.
“Air-quality permits reveal a planned third building (TX13), though there are no signs of construction yet”
Dataset · Oct. 2026 · grade C
A May 2026 TCEQ hearing on a Vantage permit application for backup diesel generators and a gas plant on Rogers Road drew more than 100 commenters with little support in the room; a second hearing on the Omicron facility
“In May, the Texas Commission on Environmental Quality (TCEQ) held a hearing on a Vantage permit application to operate backup diesel generators and a gas plant on Rogers Road. More than 100 people showed up to comment”
News report · Oct. 2026 · grade C
This ID covers only the two off-grid Vantage campuses at 14270 Omicron Drive (TX11/TX12) and 5207 Rogers Road (TX21). Other Vantage San Antonio sites and Microsoft's San Antonio campuses are separate campuses and no rows
“The power plants for these projects, at 14270 Omicron Drive and 5207 Rogers Road in San Antonio, are called “behind the meter” plants because they are dedicated to the data centers, instead of serving the regional power grid.”
News report · Sept. 2026 · grade C
Both campuses are powered behind the meter and do not take CPS Energy service; the dedicated plants do not serve the regional grid
“are called “behind the meter” plants because they are dedicated to the data centers, instead of serving the regional power grid.”
News report · Sept. 2026 · grade C
Plaintiff-side operation evidence, NOT a metered record: the Jul 22, 2026 notice of intent to sue (Environmental Integrity Project / Sierra Club / Public Citizen) states both San Antonio campuses and their behind-the-met
“are complete and at least partially operational, despite the lack of required pre-construction permits, according to the notice”
News report · Sept. 2026 · grade C
A VoltaGrid gas-fired plant at 14270 Omicron Drive is dedicated to the TX1 campus instead of the regional grid. Pair totals (405 MW gas + 151 diesel generators / 455 MW across Omicron and Rogers Road) are pair aggregates
“The power plants for these projects, at 14270 Omicron Drive and 5207 Rogers Road in San Antonio, are called behind the meter plants”
News report · Sept. 2026 · grade C
Source record
“Both of the data centers and their power plants, at 14270 Omicron Drive and 5207 Rogers Road in San Antonio, are complete and at least partially operational”
News report · July 2026 · grade C
Per the July 2026 notice, both campuses and their power plants (14270 Omicron Drive, 5207 Rogers Road) are complete and at least partially operational despite the permitting dispute; construction/operation has been ongoi
“Both of the data centers and their power plants, at 14270 Omicron Drive and 5207 Rogers Road in San Antonio, are complete and at least partially operational”
News report · July 2026 · grade C
Building-level IT figures from TDLR filings as reported: TX11 is a 32 MW two-story building (242,665 sq ft, set to go live early 2026); TX12 is up to 96 MW of critical IT capacity (432,800 sq ft, $276.8M, October 2025 -
“That project – a 32MW two-story building spanning 242,665 sq ft (22,545 sqm) – is set to go live in early 2026.”
News report · 2026 · grade C
Site: TX1 campus on Omicron Drive, San Antonio: TX11 at 14720 Omicron Dr and TX12 at 17420 Omicron Dr; behind-the-meter power plant at 14270 Omicron Dr
“The TX12 project, to be located at 17420 Omicron Drive in Bexar County, is described as a new Vantage data center at the TX1 campus”
News report · Oct. 2025 · grade C
Building tx12: two-story building, 432,800 sq ft, up to 96 MW of critical IT capacity, $276.8 million, construction Oct 2025 to Aug 2027, design firm Jacobs
“consisting of a two-story building with up to 96MW of critical IT capacity across 432,800 sq ft (40,208 sqm).”
News report · Oct. 2025 · grade C
IT capacity: 32 MW
“That project - a 32MW two-story building spanning 242,665 sq ft (22,545 sqm) - is set to go live in early 2026.”
News report · Dec. 2023 · grade C

Money and contracts (14)

power partnership: scope 1,000 MW
“Under this strategic agreement, VoltaGrid will deploy more than one gigawatt (GW) of prime power generation capacity across Vantage's expanding North America portfolio”
Company · Oct. 2026 · grade B
Tenants: not stated
“No tenant, customer or lease for TX1 is named in any source opened on 2026-10-18”
grade C
Tenant status: not stated
“No tenant, customer or lease for TX1 is named in any source opened on 2026-10-18”
grade C
Capital cost tx12: 276.8 USD millions
“The $276.8 million project is set to run from October 2025 until August 2027”
News report · Oct. 2026 · grade C
power supply (campus): scope
“Vantage struck a deal in late 2024 to obtain power from VoltaGrid after learning it was unlikely that it could connect its San Antonio project to the grid”
News report · Oct. 2026 · grade C
power supply (campus): termination (finding: not public)
“Under this strategic agreement, VoltaGrid will deploy more than one gigawatt (GW) of prime power generation capacity across Vantage's expanding North America portfolio”
Company · Oct. 2026 · grade C
power partnership: campus allocation (finding: not public)
“delivering rapid, scalable energy solutions in markets where grid power is constrained”
Company · Oct. 2026 · grade C
land purchase: scope
“The company acquired land along Omicron Drive in July 2023 from the University of Texas System Board of Regents”
News report · Oct. 2026 · grade C
land purchase: consideration (finding: not public)
“The company acquired land along Omicron Drive in July 2023 from the University of Texas System Board of Regents”
News report · Oct. 2026 · grade C
utility service: scope (finding: no executed ESA public)
“secured electricity from CPS Energy sufficient to operate ... a 32 MW data center at the Omicron Drive campus”
Court filing · Oct. 2026 · grade C
tax abatement: abatement (finding: none located)
“Chapter 312 of the Texas Tax Code authorizes local governments to abate ad valorem property taxes on the value of new improvements to the property”
Local government · Oct. 2026 · grade C
Vantage acquired the Omicron Drive land (Texas Research Park) from the University of Texas System Board of Regents; a separate 31-acre parcel at SH 151 and Wiseman Blvd followed in Aug 2023 (associated with the separate
“The company acquired land along Omicron Drive in July 2023 from the University of Texas System Board of Regents”
News report · Oct. 2026 · grade C
power partnership (behind-the-meter generation): dedicated gas-fired generation
“Through a publicly announced partnership, Denver-based Vantage and VoltaGrid, of Houston, are building 405 megawatts of dedicated, gas-fired generation capacity”
News report · Sept. 2026 · grade C
Rogers Road campus: TX21 (360,000 sq ft, $157M, filed November 2023) and TX22 (214,525 sq ft, $272M, construction October 2025 - June 2027); Vantage bought the 31-acre Rogers Road site in August 2023 and the Omicron Driv
“TX22, located at 5207 Rogers Road in Bexar County, is described as a 214,525 sq ft (19,930 sqm), two-story data center.”
News report · 2026 · grade C

Permits and government (36)

Groundbreaking date: ~Oct. 2024 (court records that the parties agree construction began two years before the Oct. 2, 2026 order)
“The court records that "the parties agree that construction on the data centers at issue began two years ago" (Doc. 27, pp. 2-3)”
Court filing · Oct. 2026 · grade A
air permit (prime): EGU Standard Permit registration SAT-2 - registration number confirmed ACTIVE in TCEQ Central Registry; revision project 416476 pending
“VOLTAGRID SAT-2 EGU, RN112293980, 5207 ROGERS RD STE 2, SAN ANTONIO TX 78251 3632”
State agency · Sept. 2025 · grade A
FAA OE/AAA: Determined - No Hazard
“ASN 2024-ASW-1679-OE: Vantage Data Center (TX11), Building, 85 ft AGL, 1009 ft AMSL, 29.41777778,-98.79027778, Determined - No Hazard, submitted 2024-02-05”
FAA · Feb. 2024 · grade A
FAA OE/AAA: Determined - No Hazard
“ASN 2024-ASW-1680-OE: crane, Tower crane, 300 ft AGL, 1224 ft AMSL, 29.41777778,-98.79027778, Determined - No Hazard, submitted 2024-02-05”
FAA · Feb. 2024 · grade A
Public Citizen and Sierra Club sued Vantage Data Centers Management Company LLC,: Clean Air Act citizen suit filed
“Each campus will have industrial-size diesel backup emergency generators and a dedicated "behind-the-grid" gas-fired power plant to feed continuous daily power to the data centers”
Court filing · Sept. 2026 · grade B
Complaint alleges both San Antonio campuses were constructed and are operating w: Federal citizen-suit complaint filed (Public Citizen et al. v. Vantage Data Centers et al.)
“The Omicron Drive campus is at least partially operational based on Defendants' own statements and records.”
Court filing · Sept. 2026 · grade B
TCEQ registration (SAT-1, Omicron gas engines): initial registration (per complaint)
“Original Omicron plan: 80 Jenbacher J620 gas engines x 3,310 kWe = 264.8 MW, September 20, 2024 (allegation)”
Court filing · Sept. 2026 · grade B
TCEQ registration (SAT-1 revised, Omicron): revision: gas-engine types changed; two black-start diesel units added (per complaint)
“June 24, 2026 Omicron revision changes gas-engine types and adds two black-start diesel units (Doc. 1 p. 35 ¶219)”
Court filing · Sept. 2026 · grade B
permit type=FAA obstruction evaluation (7460-1) (stated in detail per this folde: Determined - No Hazard
“ASN 2026-ASW-3260-OE: Vantage TX22, Mobile Crane, 350 ft AGL, 1299 ft AMSL, 29.47759,-98.69905, Determined - No Hazard, submitted 2026-03-03”
FAA · March 2026 · grade B
The public feed names no sponsor page, work dates or expiry, so none are recorded.
“ASN 2026-ASW-3260-OE: Vantage TX22, Mobile Crane, 350 ft AGL, 1299 ft AMSL, 29.47759,-98.69905, Determined - No Hazard, submitted 2026-03-03”
FAA · March 2026 · grade B
FAA obstruction evaluation (7460-1): Determined - No Hazard
“ASN 2026-ASW-864-OE: Vantage TX 12, Mobile Crane, 265 ft AGL, 1182 ft AMSL, 29.41574,-98.78968, Determined - No Hazard, submitted 2026-01-13”
FAA · Jan. 2026 · grade B
FAA OE/AAA records a 265-ft mobile crane filed as 'Vantage TX 12' (ASN 2026-ASW-864-OE, submitted Jan. 13, 2026) 0.15 km from the Vantage TX1 campus anchor at 14720 Omicron Dr, San Antonio - TX12 is this campus's second bui
“ASN 2026-ASW-864-OE: Vantage TX 12, Mobile Crane, 265 ft AGL, 1182 ft AMSL, 29.41574,-98.78968, Determined - No Hazard, submitted 2026-01-13”
FAA · Jan. 2026 · grade B
air permit (prime): EGU Standard Permit registration SAT-2 (as quoted in federal complaint exhibits)
“to install 16 Jenbacher engines with a capacity of 3,310-kilowatt-electric (kWe) each and 20 Jenbacher engines with a capacity of 4,810 kWe each at the Rogers Road Campus”
Court filing · Sept. 2025 · grade B
As described in the federal complaint (5:26-cv-06032, paras 211-213): VoltaGrid : EGU Standard Permit registration filed by VoltaGrid for the Rogers Road power plant
“On September 30, 2025, Defendant VoltaGrid sought authorization under the EGU Standard Permit”
Court filing · Sept. 2025 · grade B
air permit (prime): EGU Standard Permit registration SAT-1 (as quoted in federal complaint exhibits)
“it would install eighty (80) new 3,310-kilowatt-electric Jenbacher J620 natural gas engines at the Omicron Drive campus to produce 264.8 megawatts (MW) of electricity”
Court filing · Sept. 2024 · grade B
As described in the federal complaint (Case 5:26-cv-06032, paras 184-186): Volta: EGU Standard Permit registration filed by VoltaGrid for the Omicron Drive power plant
“This EGU Standard Permit registration was assigned permit number 177637 and project number 380453 by TCEQ”
Court filing · Sept. 2024 · grade B
air permit (backup): Permit by Rule registration for diesel backup generators; revised March 31, 2025 (22 to 86 generators)
“This Permit by Rule registration was assigned permit number 175523 and project number 370963 by TCEQ”
Court filing · Feb. 2024 · grade B
air permit (backup): Permit by Rule registration for diesel backup generators; revised June 27, 2025 (33 to 65 generators)
“This Permit by Rule registration was assigned permit number 175524 and project number 370964 by the TCEQ”
Court filing · Feb. 2024 · grade B
Land acquisition: Acquired July 2023 from the University of Texas System Board of Regents
“The company acquired land along Omicron Drive in July 2023 from the University of Texas System Board of Regents”
News report · Oct. 2026 · grade C
Permit gate exposure: New TCEQ permit issuance for data center projects is paused statewide under Gov. Abbott's Sep 21, 2026 directive until the ERCOT audit completes (expected mid-Dec 2026); TX1's claimed registrations
“Governor Abbott ordered TCEQ on September 21, 2026 to halt all permit issuance for data center projects statewide until ERCOT completes its grid audit, expected in mid-December 2026”
News report · Oct. 2026 · grade C
air quality standard permit registration (EGU): registration claimed
“On September 20, 2024, Defendant VoltaGrid sought authorization under the TCEQ EGU Standard Permit to generate electricity to power the Omicron Drive Campus data center”
Court filing · Oct. 2026 · grade C
air quality permit by rule registration: registration claimed
“In 2024 and 2025, Vantage and VoltaGrid obtained four minor source air pollution control permits from the Texas Commission on Environmental Quality to construct two gas-fired power plants plus 151 backup diesel-powered industrial generators”
News report · Oct. 2026 · grade C
air quality permit by rule registration revision: revision filed
“This revised Permit by Rule registration retained the original permit number (175523) and was assigned project number 391320 by TCEQ”
Court filing · Oct. 2026 · grade C
construction project filing (TABS): filed
“Vantage filed for another data center at the campus - TX11 - in December 2023”
News report · Oct. 2026 · grade C
construction project filing (TABS): filed
“Vantage has filed a new Department of Licensing and Regulation (TDLR) application with the state of Texas for a data center”
News report · Oct. 2026 · grade C
permit issuance pause (gubernatorial directive): issuance paused
“So long as the order is in effect, TCEQ will not issue any permits related to data center projects. Permit issuance is paused regardless of whether an applicant is in ERCOT's interconnection queue”
News report · Oct. 2026 · grade C
Gov. Abbott directs TCEQ to pause all data center permit issuance until the ERCOT grid/community impact audit completes (expected mid-Dec 2026); the pause reaches behind-the-meter projects too, so any new TX1 authorizati
“Governor Abbott ordered TCEQ on September 21, 2026 to halt all permit issuance for data center projects statewide until ERCOT completes its grid audit, expected in mid-December 2026”
News report · Oct. 2026 · grade C
Texas Commission on Environmental Quality: EGU Standard Permit registration 177637 and Permit by Rule registration 175523 processed as minor-source registrations - no public meeting, notice, comment period or hearing hel
“These weaker minor source permits do not require best available pollution controls or monitoring, and the public had no opportunity to weigh in or object, as required by law, according to the legal notice”
News report · Oct. 2026 · grade C
In 2024 and 2025 Vantage and VoltaGrid obtained four minor-source air permits from TCEQ for the two gas plants plus 151 backup diesel generators; plaintiffs allege the projects are major sources requiring major-source pe
“In 2024 and 2025, Vantage and VoltaGrid obtained four “minor source” air pollution control permits from the Texas Commission on Environmental Quality to construct two gas-fired power plants plus 151 backup diesel-powered industrial generators”
News report · July 2026 · grade C
permit type=air quality minor source permits; the notice letter and the later co: minor source air permits obtained for the campuses' generation assets (as characterised in the July 2026 notice of intent to sue)
“instead obtained 'minor' source permits from the Texas Center for Environmental Quality (TCEQ).”
News report · July 2026 · grade C
The campuses were built under minor-source air permits with no public notice or comment opportunity, which is the core allegation of the July 2026 notice letter and the September 2026 suit
“In addition, it points out that there was no opportunity for public notice or participation regarding the issuance of the minor source permits.”
News report · July 2026 · grade C
project registration (TABS filing): TX12 project filed
“The $276.8 million project is set to run from October 2025 until August 2027. Jacobs is listed as the project design firm.”
News report · Oct. 2025 · grade C
minor source air permits: four minor source air permits obtained (2024-2025, pair-scoped)
“In 2024 and 2025, Vantage and VoltaGrid obtained four minor source air pollution control permits from the Texas Commission on Environmental Quality”
News report · July 2025 · grade C
In 2024 and 2025 Vantage and VoltaGrid obtained four TCEQ 'minor source' air per: minor-source air permits obtained
“In 2024 and 2025, Vantage and VoltaGrid obtained four "minor source" air pollution control permits from the Texas Commission on Environmental Quality”
News report · 2025 · grade C
project registration (TABS filing): TX11 project filed
“That project - a 32MW two-story building spanning 242,665 sq ft (22,545 sqm) - is set to go live in early 2026.”
News report · Dec. 2023 · grade C
Land acquisition: land along Omicron Drive acquired July 2023 from the University of Texas System Board of Regents
“The company acquired land along Omicron Drive in July 2023 from the University of Texas System Board of Regents.”
News report · July 2023 · grade C

Legal (9)

Doc. 27 grants defendants extensions to Oct. 29, 2026 for responses to the complaint and PI motion; it does NOT grant the requested construction halt
“grants the defendants' extension motions, setting October 29, 2026 for responses ... It does not grant the requested construction halt”
Court filing · Oct. 2026 · grade A
Public Citizen and Sierra Club sue Vantage and VoltaGrid under the Clean Air Act (W.D. Tex. 5:26-cv-06032) and move for a preliminary injunction; answers due Oct. 14-15, 2026
“COMPLAINT filed by Public Citizen, Inc., Sierra Club, Inc.; MOTION for Preliminary Injunction”
Court filing · Sept. 2026 · grade A
Lawsuits: Public Citizen, Inc. and Sierra Club, Inc. v. Vantage Data Centers Management Co., Vantage TX11, Vantage TX21 and VoltaGrid LLC, W.D. Tex. 5:26-cv-06032 (Clean Air Act), filed Sept. 21, 2026; PI motion pending; res
“Filed: September 21, 2026. Plaintiffs: Public Citizen, Inc.; Sierra Club, Inc. Defendants: Vantage Data Centers Management Company, LLC; TX11, LLC; TX21, LLC; VoltaGrid LLC”
Court filing · Oct. 2026 · grade B
Clean Air Act citizen suit + preliminary-injunction motion (Docs. 1, 6) seeking to halt construction/operation of the Omicron Drive and Rogers Road campuses
“September 21 - Docs. 1 and 6: complaint and preliminary-injunction motion filed”
Court filing · Sept. 2026 · grade B
Plaintiffs allege Rogers Road has run its diesel backup generators as a primary power source (allegation)
“began operating the Rogers Road data center campus by running the diesel backup generators as a primary power source”
Court filing · Sept. 2026 · grade B
Announced: Nov. 2023
“It filed to develop TX21, a 360,000 sq ft (33,445 sqm), three-story data center at the site on 5207 Rogers Road in November 2023.”
State agency · Nov. 2023 · grade B
Clean Air Act notice of intent to sue sent by EIP, Sierra Club and Public Citizen to Vantage, VoltaGrid, EPA and TCEQ; 60-day cure window opened.
“The environmental groups sent the notice of intent to sue for violations of the Clean Air Act to Vantage and VoltaGrid as well as to the U.S. Environmental Protection Agency and Texas Commission on Environmental Quality”
News report · Oct. 2026 · grade C
Citizen suit filed in the Western District of Texas (No. 5:26-cv-06032) seeking to stop all construction and operation at both San Antonio campuses until major-source permitting is completed; penalties cited up to $124,4
“According to the legal complaint, the groups seek all remedies available under the law to make the companies stop all construction and operation activities at the data centers and their power plants”
News report · Oct. 2026 · grade C
The Sep 2026 federal complaint seeks to halt construction and operation at the data centers and power plants until major-source permitting is completed - a live schedule/legal risk for the TX1 campus.
“the groups seek all remedies available under the law to make the companies stop all construction and operation activities at the data centers”
News report · Sept. 2026 · grade C

Site and other (17)

Address: 14270 Omicron Drive, San Antonio, TX 78245 (TX11) and 5207 Rogers Road, San Antonio, TX 78251 (TX21)
“campuses are located at 14270 Omicron Drive, San Antonio, Texas 78245 and at 5207 Rogers Road, San Antonio, Texas 78251”
Court filing · Sept. 2026 · grade A
Developer: Vantage Data Centers
“Vantage Data Centers, a leading global provider of hyperscale data center campuses”
Company · Oct. 2026 · grade B
Project status: operating in part and expanding - TX11 set to go live early 2026 per TDLR reporting and the Sep 2026 federal complaint states the Omicron Drive campus is at least partially operational; TX12 under constru
“The Omicron Drive campus is at least partially operational based on Defendants’ own statements and records.”
Court filing · Sept. 2026 · grade B
Address: 14270 Omicron Drive, San Antonio, TX 78245 (Omicron campus, TX11); 5207 Rogers Road, San Antonio, TX 78251 (Rogers Road campus, TX21)
“Sites: 14270 Omicron Drive, San Antonio, TX 78245; 5207 Rogers Road, San Antonio, TX 78251 (Doc. 1 p. 2 ¶3)”
Court filing · Sept. 2026 · grade B
Operator: Vantage Data Centers
“The TX12 project, to be located at 17420 Omicron Drive in Bexar County, is described as a new Vantage data center at the TX1 campus”
News report · Oct. 2026 · grade C
Campus name: Vantage TX1
“Vantage TX1 is an operational AI data center”
Dataset · Oct. 2026 · grade C
Address: 14720 Omicron Dr, San Antonio, TX 78245
“Vantage TX1; San Antonio, Texas, United States”
Dataset · Oct. 2026 · grade C
County: Bexar County
“The TX12 project, to be located at 17420 Omicron Drive in Bexar County”
News report · Oct. 2026 · grade C
County code: Bexar County, TX (48029)
“The TX12 project, to be located at 17420 Omicron Drive in Bexar County”
News report · Oct. 2026 · grade C
Original target date: 2026
“is set to go live in early 2026”
News report · Oct. 2026 · grade C
Current target date: Aug. 31, 2027
“Estimated construction completion date of Building 2”
Dataset · Oct. 2026 · grade C
Building tx12 area: 432800 sq ft
“across 432,800 sq ft (40,208 sqm)”
News report · Oct. 2026 · grade C
Land clearing begins for Buildings 1 and 2 (Epoch satellite record).
“Land clearing begins for both Building 1 & Building 2”
Dataset · Oct. 2026 · grade C
Building 1 (TX11) operational per Epoch's satellite assessment - earlier than the completion date reported to TDLR.
“Although this is still earlier than the completion date reported on TDLR, based on the appearance, we believe it is operational”
Dataset · Oct. 2026 · grade C
Worker injured after a transformer explosion at Vantage's San Antonio data center site (Data Center Dynamics headline, Bexar County tag page).
“Worker injured after transformer explosion at Vantage data center in San Antonio, Texas”
News report · Oct. 2026 · grade C
County code: 48029
“The groups argue two under-construction projects on San Antonio's west side — at 14270 Omicron Drive and 5207 Rogers Road — should instead be classified as major pollution sources subject to more scrutiny.”
News report · Sept. 2026 · grade C
Announced: Dec. 2023
“Vantage filed for another data center at the campus – TX11 – in December 2023.”
News report · Dec. 2023 · grade C