Data Center Projects in Medina County, Texas

Last verified: October 27, 2026 · 5 tracked projects · 24 tracked records

Overview

Texas Data Center Watch tracks five data center projects in Medina County.

Project Cinco by Rowan Digital Infrastructure, listed as under construction. Rowan describes a 300 MW project that broke ground in September 2025 and is on track for completion in 2027 (Rowan). Rowan closed about $550M in construction financing and says the project represents at least $900M of direct local investment (Rowan).

Microsoft Castroville campus (SAT80, SAT81, SAT82) at 18844 FM 1957: SAT80 and SAT81 (106,012 sq ft each; est. $135M and $95M) were registered with TDLR July 26, 2023, and show completion dates of Aug. 31 and Sept. 30, 2024, with status Inspection Complete (TDLR SAT80; TDLR SAT81). SAT82 (one story, five colos, 244,676 sq ft, est. $482.6M) was registered July 25, 2024 at the same address, start Apr. 11, 2026, completion Feb. 8, 2028 (TDLR). A Dec. 17, 2025 filing also named SAT82 lists 3580 FM 471 N, Castroville (195,670 sq ft, est. $400M; start Aug. 13, 2026, completion July 24, 2028); the filings don't say how the two relate (TDLR). On May 13, 2024, the court approved 4-0 a Chapter 381 agreement under which Microsoft funds a county fire inspection program; the agenda summary gives $100,000 over a three-year term (minutes), and Devine News reported $100,000 a year (Devine News).

Microsoft SAT89/90 at 2995 US Hwy 90 W, Castroville: two single-story buildings, about 489,400 sq ft gross, est. $765M; registered Feb. 25, 2025, completion July 31, 2027 (TDLR). The court approved a plat creating Lot 1, SAT 89, Microsoft Corporation, on Nov. 27, 2023 (minutes).

Microsoft SAT93 and SAT94 on County Road 381: Feb. 2025 filings listed two 245,000 sq ft buildings at $350M each (TDLR SAT93; TDLR SAT94); Mar. 9, 2026 refilings describe "a new greenfield datacenter site" at $26M each, with starts in March and April 2027 and completions in 2029 (TDLR SAT93; TDLR SAT94). DCD reported the change and said it asked Microsoft about it (DCD). The TDLR filings list Medina County; Microsoft's community page describes the site as County Road 381 "in San Antonio" (Microsoft), so the county line rests on the TDLR filings.

CyrusOne SAT14A at 3397 US Hwy 90 W, west of Castroville: on Sept. 22, 2025, the court designated CyrusOne Reinvestment Zone 1 (about 244.3 acres) 4-0 (minutes), and on Nov. 3, 2025 it approved 4-0 a Chapter 312 abatement agreement with CyrusOne LP (minutes). Devine News reported an abatement of 80% of county maintenance and operations taxes for 10 years on a $600M, 500,000 sq ft project (Devine News). A July 16, 2026 TDLR registration lists a one-story 460,000 sq ft building at an estimated $500M, completion June 1, 2027 (TDLR). In draft Sept. 8, 2026 minutes, County Judge Lutz said the county's roughly $5.1M Data Center fund came from CyrusOne about 45 days after the agreement was signed and was requested for County Road 4516 road repairs (Oct. 2 agenda packet).

In the same draft Sept. 8 minutes, the court voted 4-0 to approve an agreement terminating the July 13, 2021 Chapter 381 agreement between Microsoft and Medina County; the minutes don't name a site (Oct. 2 agenda packet). A public commenter at the meeting said it covered about 2,006 acres near Potranco Road. That is the commenter's statement, not a county finding, and Texas Data Center Watch doesn't link the terminated agreement to any tracked Microsoft site.

City of Lytle hearing (Oct. 19): A NoticeRegistry listing (aggregator) gives an Oct. 19, 2026, 6:30 p.m. public hearing on a Rowan Lytle LLC request for Reinvestment Zone No. Two (~284.25 acres, ETJ) for a data center (NoticeRegistry (aggregator)). Texas Data Center Watch has not opened a city-hosted copy of the notice.

Note: "registered" means a state accessibility (TDLR) building registration, not an environmental permit or local approval.

Tracked projects

Project	Developer	Status	Capacity / size	Investment	Key dates	Sources
Project Cinco	Rowan Digital Infrastructure	Under construction	300 MW (Rowan)	Minimum $900M direct local investment; ~$550M construction financing (Rowan)	Apr 2025 Lytle City Council voted 5-0 to approve an 80% tax abatement for Project Cinco in the city's ETJ, with legal review requested before final action (Devine News, posted Apr 30 2025 · agreement not opened) · Sep 2025 groundbreaking · ~$550M construction financing closed (Rowan release dated Feb 11 2026 · page post date Jan 5 2026) · on track for 2027 completion (Rowan) · Oct 26 2026 Lytle City Council agenda lists Resolution 26-47 approving a sanitary sewer service agreement with Rowan Cinco LLC for Project Cinco (official · outcome pending)	Rowan 1 · Rowan 2 · Devine News · Lytle agenda
Microsoft Castroville campus (SAT80, SAT81, SAT82), Castroville (18844 FM 1957 / Potranco Rd)	Microsoft	SAT80–81 construction complete (TDLR); SAT82 registered (TDLR)	SAT80 and SAT81: 106,012 sq ft each (admin building, Colo 1 finish-out, Colo 2 shell); SAT82: one-story, 5 colos, 244,676 sq ft (Jul 2024 filing at 18844 FM 1957). A Dec 2025 filing also named SAT82 lists 3580 FM 471 N, Castroville, 1-story 5-colo, 195,670 sq ft (TDLR TABS)	Est. cost SAT80 $135M, SAT81 $95M (TDLR TABS; Devine News puts the FM 1957 data center at $230M); SAT82 est. $482.6M (Jul 2024 filing) and $400M (Dec 2025 filing at 3580 FM 471 N) (TDLR TABS)	Jul 28 2022 SAT80 and SAT81 construction start · Jul 26 2023 SAT80 and SAT81 registered with TDLR · May 13 2024 Commissioners Court approved 4-0 a Chapter 381 economic development agreement with Microsoft for a county fire inspection program (minutes) · agenda summary: Microsoft contributes $100,000 for fire inspection of the data centers, 3-year term · Devine News: $100,000 a year for inspections at the FM 1957 data center · Jul 25 2024 SAT82 registered at 18844 FM 1957 (start Apr 11 2026, completion Feb 8 2028 · status Review Complete) · Aug 31 2024 SAT80 and Sep 30 2024 SAT81 completion dates, both TDLR status Inspection Complete · Dec 17 2025 a second TDLR registration named Microsoft SAT82 at 3580 FM 471 N (start Aug 13 2026, completion Jul 24 2028 · Project Registered) · relation between the two SAT82 filings not stated. No TDLR registrations found for SAT83, SAT84 or SAT85 (TDLR search, Oct 6 2026)	TDLR TABS 1 · TDLR TABS 2 · TDLR TABS 3 · TDLR TABS 4 · Medina County minutes · Devine News
Microsoft SAT89/90 Data Center, Castroville (2995 US Hwy 90 W)	Microsoft Corporation	Registered (TDLR status: Review Complete)	Two single-story data center buildings, 5 colos each; ~489,400 sq ft gross (TDLR TABS)	Est. cost $765M (TDLR TABS)	Nov 27 2023 Commissioners Court approved 4-0 a commercial development plat creating Lot 1, SAT 89, Microsoft Corporation, off US Hwy 90 in Precinct 2 (minutes) · Feb 25 2025 TDLR registration (start Jun 1 2025, completion Jul 31 2027 · status Review Complete)	TDLR TABS · Medina County minutes
Microsoft SAT93 and SAT94 (CR 381 greenfield site), County Road 381 (TDLR address: Medina, TX 78253)	Microsoft	Registered (TDLR)	2 one-story buildings × 245,000 sq ft, 5 colos each (TDLR TABS)	Est. $26M each in the Mar 2026 filings; the Feb 2025 filings listed $350M each (TDLR TABS)	Feb 18 2025 SAT93 and SAT94 registered (est. $350M each · start May 13 2025, completion Jun 15 2027 · status Review Complete) · Mar 9 2026 new registrations Microsoft SAT93 and SAT94, 'a new greenfield datacenter site' (est. $26M each · SAT93 start Mar 1 2027, completion Apr 30 2029 · SAT94 start Apr 1 2027, completion May 31 2029 · Project Registered) (TDLR) · Mar 17 2026 DCD reported the new filings and said it had asked Microsoft about the changed timelines and investment. DCD describes the location as the town of Medina, about 65 miles northwest of San Antonio · the TDLR filings list County Road 381 in Medina County (Location County: Medina). Location note: Microsoft's own community page describes the site as County Road 381 'in San Antonio' and cites the San Antonio city code, so the county line is not independently confirmed beyond the TDLR filing. Nov 2025 Microsoft construction update: construction scheduled to begin Aug 2025 and continue through Winter 2028	TDLR TABS 1 · TDLR TABS 2 · TDLR TABS 3 · TDLR TABS 4 · DCD · Microsoft
CyrusOne SAT14A (CyrusOne Reinvestment Zone 1), Castroville area (3397 US Hwy 90 W; west of Castroville city limits)	CyrusOne LP	Approved (tax abatement); registered (TDLR)	~244.3-acre reinvestment zone on US 90 (minutes); one-story building, 460,000 sq ft (TDLR TABS); Devine News: 500,000 sq ft facility, with a possible second building later	Est. cost $500M (TDLR TABS); $600M project (per Devine News)	Sep 22 2025 Commissioners Court designated CyrusOne Reinvestment Zone 1, about 244.3 acres on US Hwy 90 west of the Castroville city limits, intended for a CyrusOne data center, 4-0, and held a public hearing on a possible Chapter 312 abatement (minutes) · Nov 3 2025 court approved 4-0 a Chapter 312 tax abatement agreement with CyrusOne LP over about 245 acres in the zone (minutes) · Devine News: abatement is 80% of county maintenance and operations taxes for the first 10 years, excluding the farm-to-market and debt service levies · Jul 16 2026 TDLR registration SAT14A, owner CyrusOne LP (start Jan 12 2026, completion Jun 1 2027 · status Review Complete) · Sep 8 2026 County Judge Lutz said the county's ~$5.1M Data Center fund is money received from CyrusOne about 45 days after the agreement was signed, requested for road repairs on County Road 4516 (Sep 8 minutes, draft in Oct 2 2026 agenda packet). Executed agreement not opened · terms beyond the minutes and Devine News are not recorded here	Medina County minutes 1 · Medina County minutes 2 · TDLR TABS · Devine News · Medina County agenda packet · CyrusOne

Recorded benefits and concerns (Project Cinco):

Benefits: Rowan says its portfolio is contracted to "top tier customers" (customer not named)

Recorded benefits and concerns (Microsoft Castroville campus (SAT80, SAT81, SAT82)):

Benefits: Microsoft funds a county fire inspection program under a Chapter 381 agreement (minutes; agenda summary)

Recorded benefits and concerns (CyrusOne SAT14A (CyrusOne Reinvestment Zone 1)):

Benefits: County Judge Lutz forecast $78.9M for the county and other taxing entities over the first decade (per Devine News); ~$5.1M paid by CyrusOne into the county Data Center fund for County Road 4516 road work (County Judge, Sep 8 2026 minutes, draft)

Sources for each project are linked in the table. Figures labeled "company" come from the developer.

Record timeline

Date	Type	What happened	Source
Oct 26, 2026	City council	Lytle council agenda Oct 26, 6:30 p.m.: Resolution 26-47, sanitary sewer service agreement with Rowan Cinco LLC for Project Cinco.	Lytle agenda
Oct 26, 2026	City council	Lytle council agenda Oct 26: executive session on economic development negotiations, 'Discussion Concerning Project Pirate'.	Lytle agenda
Oct 21, 2026	News	Devine News: Lytle held hearings on annexation, rezoning and a reinvestment zone for a 284-acre Rowan site; none of 26 speakers favored it.	Devine News
Oct 19, 2026	City council	Lytle notice: Oct 19, 6:30 p.m. hearing on Rowan Lytle LLC request for Reinvestment Zone No. Two (~284.25 acres, ETJ) for a data center.	NoticeRegistry (aggregator)
Sep 8, 2026	Commissioners court	Court votes 4-0 to terminate the July 13, 2021 Chapter 381 agreement between Microsoft and Medina County (draft minutes; site not named).	Medina County agenda packet
Sep 8, 2026	Commissioners court	County Judge: ~$5.1M county Data Center fund came from CyrusOne ~45 days after the agreement, for County Road 4516 roads (draft minutes).	Medina County agenda packet
Sep 8, 2026	Commissioners court	Draft minutes: court approves 4-0 an Agreement to Terminate the Chapter 381 Agreement dated Jul 13 2021 between Microsoft and Medina County; minutes name no site. A public commenter said it covered ~2,006 acres near Potranco Road (commenter statement, not a county finding).	Medina County agenda packet
Jul 16, 2026	Building registration (TDLR)	TDLR TABS: CyrusOne SAT14A, 3397 US Hwy 90 W, Castroville; 460,000 sq ft, $500M; completion Jun 1 2027.	TDLR TABS
Mar 17, 2026	News	DCD: Microsoft refiles SAT93 and SAT94 at $26M each, down from $350M each in 2025 filings; construction to start 2027.	DCD
Mar 9, 2026	Building registration (TDLR)	TDLR TABS: new Microsoft SAT93 and SAT94 filings, CR 381 greenfield site; 245,000 sq ft, $26M each; starts Mar and Apr 2027.	TDLR TABS
Feb 11, 2026	Company announcement	Rowan closes ~$550M construction financing for 300 MW Cinco project; minimum $900M direct local investment.	Rowan
Dec 17, 2025	Building registration (TDLR)	TDLR TABS: 'Microsoft SAT82 Data Center' at 3580 FM 471 N, Castroville; 5 colos, 195,670 sq ft, $400M; start Aug 13 2026.	TDLR TABS
Nov 5, 2025	News	Devine News: CyrusOne abatement is 80% of county M&O taxes for 10 years on a $600M, 500,000 sq ft project.	Devine News
Nov 3, 2025	Tax abatement	Minutes: court approves 4-0 a Chapter 312 tax abatement agreement with CyrusOne LP over ~245 acres in Reinvestment Zone 1.	Medina County minutes
Nov 1, 2025	Company announcement	Microsoft community page (Nov 2025 update): construction scheduled Aug 2025 through Winter 2028; page says San Antonio, TDLR says Medina County.	Microsoft
Sep 22, 2025	Tax abatement	Minutes: court designates CyrusOne Reinvestment Zone 1 (~244.3 acres, US 90 west of Castroville) 4-0; abatement hearing held.	Medina County minutes
Apr 30, 2025	News	Devine News: Lytle council voted 5-0 for an 80% tax abatement for Project Cinco in its ETJ; legal review requested before final action.	Devine News
Feb 25, 2025	Building registration (TDLR)	TDLR TABS: Microsoft SAT89/90, 2995 US Hwy 90 W, Castroville; 2 buildings, 489,400 sq ft, $765M; completion Jul 31 2027.	TDLR TABS
Feb 18, 2025	Building registration (TDLR)	TDLR TABS: Microsoft SAT93 (and identical SAT94), CR 381, Medina County; 245,000 sq ft, $350M each; completion Jun 15 2027.	TDLR TABS
Jul 25, 2024	Building registration (TDLR)	TDLR TABS: Microsoft SAT82, 18844 FM 1957; 5 colos, 244,676 sq ft, $482.6M; start Apr 11 2026, completion Feb 8 2028.	TDLR TABS
May 13, 2024	Commissioners court	Minutes: court approves 4-0 a Chapter 381 agreement with Microsoft for a fire inspection program; agenda: $100,000, 3-year term.	Medina County minutes
Nov 27, 2023	Commissioners court	Minutes: court approves 4-0 a commercial development plat creating Lot 1, SAT 89, Microsoft Corporation, off US Hwy 90.	Medina County minutes
Jul 26, 2023	Building registration (TDLR)	TDLR TABS: Microsoft SAT80, 18844 FM 1957, Castroville; 106,012 sq ft, $135M; completed Aug 31 2024 (Inspection Complete).	TDLR TABS
Jul 26, 2023	Building registration (TDLR)	TDLR TABS: Microsoft SAT81, 18844 FM 1957, Castroville; 106,012 sq ft, $95M; completed Sep 30 2024 (Inspection Complete).	TDLR TABS

What's next

These dates come from the tracker.

Oct. 19, 2026 (held): Lytle held hearings on annexation, rezoning and a reinvestment zone for a 284-acre Rowan site; the Devine News reports none of 26 speakers favored it (Devine News). No vote outcome is in the tracker yet.
Oct. 26, 2026 (outcome not yet found): Lytle City Council agenda included Resolution 26-47, a sanitary sewer service agreement with Rowan Cinco LLC for Project Cinco (Lytle agenda).
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 Medina County has a pending TCEQ permit.
June 1, 2027: Scheduled completion of CyrusOne SAT14A (TDLR).
July 31, 2027: Scheduled completion of Microsoft SAT89/90 (TDLR).
Feb. 8, 2028: Scheduled completion of Microsoft SAT82 (FM 1957 filing) (TDLR).
2027: Targeted completion of Project Cinco (Rowan).

Frequently asked questions

What data center projects are tracked in Medina County, Texas? 5: Project Cinco, listed as under construction; Microsoft Castroville campus (SAT80, SAT81, SAT82) in Castroville (18844 FM 1957 / Potranco Rd), listed as SAT80–81 construction complete (TDLR); SAT82 registered (TDLR); Microsoft SAT89/90 Data Center in Castroville (2995 US Hwy 90 W), listed as registered (TDLR status: Review Complete); Microsoft SAT93 and SAT94 (CR 381 greenfield site) in County Road 381 (TDLR address: Medina, TX 78253), listed as registered (TDLR); CyrusOne SAT14A (CyrusOne Reinvestment Zone 1) in Castroville area (3397 US Hwy 90 W; west of Castroville city limits), listed as approved (tax abatement); registered (TDLR).

How big is Project Cinco? 300 MW, according to Rowan, with at least $900M of direct local investment (Rowan).

Which companies are building data centers in Medina County? Texas Data Center Watch tracks Rowan (Project Cinco), Microsoft (Castroville, SAT89/90 and CR 381 sites) and CyrusOne (SAT14A).

Did Medina County give CyrusOne a tax abatement? Yes. The court approved a Chapter 312 abatement agreement 4-0 on Nov. 3, 2025 (minutes); Devine News reported it as 80% of county maintenance and operations taxes for 10 years (Devine News).

What is the Lytle hearing about? A NoticeRegistry listing schedules an Oct. 19, 2026 hearing on a Rowan Lytle LLC request for Reinvestment Zone No. Two (~284.25 acres in the ETJ) for a data center (NoticeRegistry (aggregator)).

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