Data Center Projects in Williamson County, Texas

Last verified: October 27, 2026 · 4 tracked projects · 17 tracked records

Overview

Texas Data Center Watch tracks four data center projects in Williamson County.

Taylor Technology Campus (formerly Project Mustang), just east of the City of Taylor between FM 112 and US 79, is listed as approved (development agreement). Big Watt Digital and PowerHouse Data Centers propose 664 acres of data centers plus on-site power. The City made the project public Aug. 3, 2026; P&Z tabled it Aug. 18 for 90 days; developers withdrew their zoning and annexation application Sept. 3. On Oct. 2 the City published a proposed development agreement, which its project page describes as an agreement "to move forward with annexation and development" (closed-loop cooling with reclaimed water; noise capped at the greater of 65 dBA or pre-development level; 300–700 ft setbacks; developers to withdraw their TCEQ wastewater discharge permit application). Developers did not ask for tax abatements; the City projects $1.38B gross tax revenue over 20 years and $28.2M in community investments (City of Taylor). KUT describes the item as a deal to annex the site (KUT).

Oct. 8 vote: Item 6 on the council agenda was a development agreement under Section 212.172 of the Local Government Code for about 664.39 acres along FM 112 (agenda). The council approved it unanimously after about two hours of public comment, most of it opposed, according to the Taylor Press; KUT and the Wilco Liberty Project also report a unanimous vote, and CBS Austin reports it passed 5-0 (Taylor Press; KUT; Wilco Liberty Project; CBS Austin). Official minutes hadn't been posted as of this update. The agreement has a 20-year initial term that can be extended 15 years by mutual agreement. It requires the developer to submit a complete preliminary plat application by April 8, 2027 and to file a voluntary annexation petition no later than seven days after the plat is approved or conditionally approved (agenda packet). The vote did not annex the site, which remains in unincorporated Williamson County; annexation would be a later City action. The Taylor Press reports the project isn't receiving tax incentives or deferrals from the city or the county (Taylor Press).

Company plans (DCD, Oct. 15): Data Center Dynamics, attributing the developers' plans, reports up to 1 GW of data center capacity powered behind the meter by a new 750 MW natural gas plant, with first power targeted for the first half of 2028 and a first phase aiming for 500 MW (DCD). Those are company plans, not terms of the development agreement.

Skybox Hutto campus (Hutto 1–4), at 4200 and 3399 County Road 132 in Hutto, is listed as Registered (TDLR). TDLR has a filing for each building. Sizes are shown as each filing states them; they differ between filings:

Hutto 1 (4200 CR 132): core/shell registered Oct. 19, 2023, est. $86M; square footage field 253,730 sq ft, while its scope text says 235,730 sq ft (TDLR). Initial improvements, 235,730 sq ft, est. $149M, registered Jan. 31, 2024 (TDLR); fit-out, 235,730 sq ft, est. $163M, registered Apr. 16, 2024 (TDLR).
Hutto 2: core/shell, 235,730 sq ft, est. $78.3M, registered Apr. 3, 2024 (TDLR); fit-out, 234,820 sq ft, est. $125M, registered Aug. 28, 2025 (TDLR); fit-up, 234,820 sq ft, est. $470M, registered Sept. 19, 2025 (TDLR).
Hutto 3 (3399 CR 132): core/shell, 492,350 sq ft, est. $283,046,463, registered May 10, 2024 (TDLR).
Hutto 4 (3399 CR 132): core/shell, 846,300 sq ft (its scope text describes about 844,300 sq ft of data center plus about 20,000 sq ft of office), est. $550M, registered Sept. 30, 2026; start Jan. 20, 2027, completion Oct. 30, 2028 (TDLR).

The core/shell filings list future data center use. TDLR lists owners Hutto Data Center Campus, LLC (Hutto 1, 2 and 4) and Hutto Data Center 3, LLC (Hutto 3). Hoodline calls the campus owner a Prologis affiliate and, citing DCD, reports a planned 600 MW of IT capacity across 3.88 million sq ft; it cites The Real Deal (July 2023) for a cumulative $5B–$10B investment across up to six buildings (Hoodline). Those figures come from Hoodline, not from TDLR.

Hutto rezoning (Oct. 1): The Hutto City Council approved 6-0 (Councilwoman Corina Zepeda absent) rezoning a roughly 140-acre parcel in the Hutto Megasite as a planned unit development allowing a data center and power station, on condition that the developer use closed-loop cooling, follow Hutto land development codes and pay local sales taxes on all construction and power generation (Taylor Press). OpenTexas, a third-party civic site, lists the item as "Skybox Data Center (Project SQL)" approved 6-0 (OpenTexas). The Taylor Press reports that the Hutto EDC owns the 140 acres; that Skybox and Prologis have a purchase agreement for it that expires in February; that no tenant has signed; and that the second phase, formerly Project Sequel, is now called Hutto Data Center Campus East. It quotes Skybox's chief development officer describing the next phase as Skybox's fifth and sixth Megasite data centers and saying securing power may take another two years (Taylor Press). No source Texas Data Center Watch has opened ties the 140 acres to any of the Hutto 1–4 TDLR filings, so they aren't linked here.

A separate Apr. 14, 2026 TDLR filing titled "Hutto Data Center Building - 3" (3300 County Rd 132, Building 3; owner Hutto Data Center 3 LLC, Denver; a $900K interior fit-out of an existing two-story, 503,000 sq ft data center) doesn't name Skybox. Its site address, owner address and size differ from Skybox Hutto 3's, though it lists the same owner phone and contact as the Hutto 2 fit-out filings (TDLR). Texas Data Center Watch doesn't link it to Skybox.

Added since the Oct. 16 page update:

Colovore Hutto data center, Hutto (2401 Innovation Boulevard, per TDLR): listed as registered (TDLR). Developer, per the tracker: Colovore (TDLR owner Colovore Austin 1, LLC) (TDLR TABS).
Sabey Austin Building B data halls (Round Rock), Round Rock (1300 Louis Henna Blvd., per TDLR): listed as existing campus; new data halls registered (TDLR). Developer, per the tracker: Sabey Data Centers (TDLR owner) (TDLR TABS 1 · TDLR TABS 2).

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

Tracked projects

Project	Developer	Status	Capacity / size	Investment	Key dates	Sources
Taylor Technology Campus (formerly Project Mustang), Taylor (just east of city limits, between FM 112 and US 79)	Big Watt Digital; PowerHouse Data Centers	Approved (development agreement)	664 acres; data center facilities plus on-site power generation (City of Taylor); up to 1 GW data center capacity via dedicated behind-the-meter power from a new 750 MW natural gas plant; first power targeted 1H 2028, first phase aiming for 500 MW (DCD, Oct 15 2026, attributing company plans)	Not recorded	Jan 8–Jul 23 2026 discussed in City Council executive sessions, no action taken · Aug 3 2026 project made public by the City · Aug 18 2026 Planning and Zoning Commission tabled it for 90 days pending more information and data center regulations · Sep 3 2026 developers withdrew zoning and annexation application · Oct 2 2026 City published a proposed development agreement (closed-loop cooling using reclaimed water, noise capped at the greater of 65 dBA or pre-development level, 300–700 ft setbacks, developers to withdraw their TCEQ wastewater discharge permit application) (City of Taylor) · Oct 8 2026 City Council approved the development agreement unanimously (Taylor Press · KUT · Wilco Liberty Project, news) · CBS Austin reports it passed 5-0 (news) · official minutes not yet posted. The vote approved a 20-year development agreement (extendable 15 years) · it did not annex the site. Under the agreement the developer must submit a complete preliminary plat by Apr 8 2027 and file a voluntary annexation petition within seven days after plat approval or conditional approval (Wilco Liberty Project, citing agreement/packet). Formal annexation remains a later City action. Site is currently in unincorporated Williamson County	City of Taylor · KUT · CBS Austin · Taylor Press · Wilco Liberty Project · City of Taylor agenda · City of Taylor agenda packet · DCD
Skybox Hutto campus (Hutto 1–4), Hutto (4200 and 3399 County Road 132)	Skybox (named in TDLR project titles); Prologis (per Hoodline, which calls Hutto Data Center Campus LLC a Prologis affiliate); owners Hutto Data Center Campus, LLC (Hutto 1, 2, 4) and Hutto Data Center 3, LLC (Hutto 3) (TDLR)	Registered (TDLR)	Sizes as each TDLR filing states them: Hutto 1 core/shell, square footage field 253,730 sq ft while its scope text says 235,730 sf; Hutto 1 initial improvements 235,730; Hutto 1 fit-out 235,730; Hutto 2 core/shell 235,730; Hutto 2 fit-out 234,820; Hutto 2 fit-up 234,820; Hutto 3 core/shell 492,350; Hutto 4 core/shell 846,300 (about 844,300 sq ft data center plus about 20,000 sq ft office per its scope text); core/shell filings list future data center use (TDLR). The figures differ between filings and are shown as filed. Hoodline reports a planned 600 MW of IT across 3.88M sq ft (citing DCD)	TDLR est. costs: Hutto 1 core/shell $86M, initial improvements $149M, fit-out $163M; Hutto 2 core/shell $78.3M, fit-out $125M, fit-up $470M; Hutto 3 core/shell $283,046,463; Hutto 4 core/shell $550M. Hoodline cites The Real Deal (Jul 2023) for $5–10B across up to six buildings	Oct 19 2023 Hutto 1 core/shell registered at 4200 CR 132 (start Jan 1 2024, completion Nov 1 2024) · Jan 31 2024 Hutto 1 initial improvements and Apr 16 2024 Hutto 1 fit-out registered · Apr 3 2024 Hutto 2 core/shell registered (start Jun 1 2024, completion Feb 1 2026) · May 10 2024 Hutto 3 core/shell registered at 3399 CR 132 (start Jul 1 2024, completion Jun 1 2026) · Aug 28 2025 Hutto 2 fit-out and Sep 19 2025 Hutto 2 fit-up registered · Sep 30 2026 Hutto 4 registered at 3399 CR 132 (start Jan 20 2027, completion Oct 30 2028). All TDLR status Project Registered. Oct 1 2026 Hutto City Council approved 6-0 (Zepeda absent) a rezoning of about 140 acres in the Hutto Megasite for a Planned Unit Development allowing data centers and on-site power generation (Taylor Press · OpenTexas project page titled Skybox Data Center / Project SQL). Conditions: closed-loop cooling, compliance with Hutto land development codes, and payment of local sales taxes on construction and power generation (Taylor Press). Formerly Project Sequel · second phase now called Hutto Data Center Campus East (Taylor Press). Skybox CDO said securing ERCOT power may take another two years before construction on a fifth and sixth data center (company via Taylor Press). Taylor Press reports the 140-acre parcel is owned by the Hutto EDC under a purchase agreement with Skybox and Prologis expiring in February, has no tenant yet, and is the second phase (Hutto Data Center Campus East) · Skybox CDO described the next phase as its fifth and sixth Megasite data centers (company via Taylor Press). No opened source ties the 140 acres to any Hutto 1–4 TDLR filing, so they are not linked · official Hutto minutes not yet opened. Hutto 1–3 owner address 321 N Clark St., Chicago · Hutto 2 fit-out/fit-up owner address 2021 McKinney Ave., Dallas (TDLR). Separately, an Apr 14 2026 TDLR filing titled "Hutto Data Center Building - 3" (3300 County Rd 132 Building 3 · owner Hutto Data Center 3 LLC, 1800 Wazee St., Denver · $900K interior fit-out of an existing 2-story, 503,000 sq ft data center · Review Complete) does not name Skybox. Compared with Skybox Hutto 3 (3399 County Road 132 · owner Hutto Data Center 3, LLC, 321 N Clark St., Chicago · 492,350 sq ft), the site address, owner address and size differ and the owner name differs only by a comma · it lists the same owner phone and contact as the Hutto 2 fit-out filings (TDLR). It is not linked to Hutto 3 here	TDLR TABS 1 · TDLR TABS 2 · TDLR TABS 3 · TDLR TABS 4 · TDLR TABS 5 · TDLR TABS 6 · TDLR TABS 7 · TDLR TABS 8 · TDLR TABS 9 · Hoodline · Taylor Press · OpenTexas (third-party)
Colovore Hutto data center, Hutto (2401 Innovation Boulevard, per TDLR)	Colovore (TDLR owner Colovore Austin 1, LLC)	Registered (TDLR)	One-story 192,694 sq ft data center building with admin area and screened equipment yard (TDLR)	Est. $280M (TDLR, as filed)	Sep 2 2026 TDLR registration 'Colovore Hutto' (start Dec 1 2026, completion Dec 1 2028 · Project Registered)	TDLR TABS
Sabey Austin Building B data halls (Round Rock), Round Rock (1300 Louis Henna Blvd., per TDLR)	Sabey Data Centers (TDLR owner)	Existing campus; new data halls registered (TDLR)	Data Halls B35 and B36, ~77,000 sq ft each (TDLR)	Est. $40M per data hall (TDLR, as filed)	Oct 10 2025 'Sabey Austin Building B: DH B35' and 'DH B36' registered (start Nov 1 2025, completion Sep 1 2026 · Project Registered) (TDLR)	TDLR TABS 1 · TDLR TABS 2

Recorded benefits and concerns (Taylor Technology Campus (formerly Project Mustang)):

Benefits: Developers commit $28.2M for community investments and nonprofit support; City projects $1.38B gross tax revenue over 20 years; developers are not asking for tax abatements (City of Taylor)
Concerns: Noise, water use, setbacks (City of Taylor); residents objected at the Oct 8 hearing (Taylor Press; KUT)

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	News	CBS Austin: TCEQ says it received Big Watt Digital's air permit application for on-site gas generators; technical review not begun.	CBS Austin
Oct 15, 2026	News	DCD: PowerHouse and Big Watt secured Taylor City Council approval for up to 1 GW campus with 750 MW on-site gas; first power targeted 1H 2028 (company plans via DCD).	DCD
Oct 9, 2026	News	KUT: council unanimously approved agreement with Big Watt/PowerHouse covering water, noise and air-quality conditions for the 664-acre campus.	KUT
Oct 8, 2026	City council	Agenda item 6: council to consider development agreement for 664.39-acre Taylor Technology Campus (formerly Project Mustang); agenda posted Oct 2.	City of Taylor agenda
Oct 8, 2026	City council	CBS Austin: Taylor City Council approves Taylor Technology Campus development agreement 5-0 ("unanimously"); formal annexation is a later step under the agreement.	CBS Austin
Oct 8, 2026	City council	Taylor Press: council unanimously approved the development agreement after public comment; no tax incentives; annexation expected later.	Taylor Press
Oct 2, 2026	City council	City of Taylor publishes proposed development agreement for 664-acre Taylor Technology Campus; council to vote on the agreement Oct 8; no tax abatements requested.	City of Taylor
Oct 2, 2026	News	KUT: Taylor council to vote Oct 8 on deal to annex Big Watt/PowerHouse data center site and set conditions.	KUT
Oct 1, 2026	City council	Taylor Press: Hutto council approves 6-0 rezoning of ~140-acre Megasite parcel for Skybox data center and power station PUD, with cooling and sales-tax conditions.	Taylor Press
Oct 1, 2026	City council	OpenTexas civic record page: Skybox Data Center (Project SQL) rezoning approved 6-0 by Hutto City Council.	OpenTexas (third-party)
Sep 30, 2026	Building registration (TDLR)	TDLR TABS: 'Skybox Hutto 4 – Core/Shell', 846,300 sq ft, est. $550M, future data center use; owner Hutto Data Center Campus, LLC.	TDLR TABS
Sep 2, 2026	Building registration (TDLR)	TDLR TABS: 'Colovore Hutto', one-story 192,694 sq ft data center, est. $280M, 2401 Innovation Blvd, Hutto; owner Colovore Austin 1, LLC.	TDLR TABS
Oct 10, 2025	Building registration (TDLR)	TDLR TABS: 'Sabey Austin Building B' Data Halls B35 and B36, ~77,000 sq ft and est. $40M each, 1300 Louis Henna Blvd, Round Rock.	TDLR TABS
Sep 19, 2025	Building registration (TDLR)	TDLR TABS: 'Skybox - Hutto 2 Fit Up', interior improvements to Building 2, est. $470M; owner Hutto Data Center Campus, LLC.	TDLR TABS
May 10, 2024	Building registration (TDLR)	TDLR TABS: 'Skybox - Hutto 3 Core Shell', 492,350 sq ft, est. $283M, 3399 CR 132; owner Hutto Data Center 3, LLC.	TDLR TABS
Apr 3, 2024	Building registration (TDLR)	TDLR TABS: 'Skybox - Hutto 2 Core/Shell', 235,730 sq ft, est. $78.3M, future data center use; owner Hutto Data Center Campus, LLC.	TDLR TABS
Oct 19, 2023	Building registration (TDLR)	TDLR TABS: 'Skybox - Hutto 1', core/shell building for future data center use, 4200 CR 132, est. $86M; owner Hutto Data Center Campus, LLC.	TDLR TABS

What's next

These dates come from the tracker. Texas Data Center Watch has no recorded upcoming Williamson County hearings or votes on data centers.

Apr. 8, 2027: Deadline for the Taylor Technology Campus developer to submit a complete preliminary plat application; a voluntary annexation petition is due within seven days of plat approval (agenda packet).
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 Williamson County has a pending TCEQ permit.
Oct. 30, 2028: Scheduled completion of Skybox Hutto 4, per its TDLR registration (TDLR).

Frequently asked questions

What data center projects are tracked in Williamson County, Texas? Four: Taylor Technology Campus (formerly Project Mustang) in Taylor (just east of city limits, between FM 112 and US 79), listed as approved (development agreement); Skybox Hutto campus (Hutto 1–4) in Hutto (4200 and 3399 County Road 132), listed as registered (TDLR); Colovore Hutto data center in Hutto (2401 Innovation Boulevard, per TDLR), listed as registered (TDLR); Sabey Austin Building B data halls (Round Rock) in Round Rock (1300 Louis Henna Blvd., per TDLR), listed as existing campus; new data halls registered (TDLR).

Did Taylor approve the Taylor Technology Campus? Yes, unanimously, on Oct. 8, 2026, per the Taylor Press, KUT and the Wilco Liberty Project; CBS Austin reports 5-0 (Taylor Press; CBS Austin). The council approved a 20-year development agreement. It did not annex the site: the developer must submit a preliminary plat by April 8, 2027 and then petition for voluntary annexation (agenda packet).

Are the Taylor Technology Campus developers getting tax incentives? No. The Taylor Press reports the project isn't receiving tax incentives or deferrals from the city or the county (Taylor Press).

What did Hutto approve on Oct. 1? A 6-0 rezoning of about 140 acres in the Hutto Megasite for a data center and power station, with conditions on cooling, codes and local sales taxes. The Taylor Press says the land is owned by the Hutto EDC under a purchase agreement with Skybox and Prologis that expires in February, with no tenant yet (Taylor Press).

How big is the Skybox Hutto campus? TDLR filings cover four core-and-shell buildings (Hutto 1–4), the largest being Hutto 4 at 846,300 sq ft and an estimated $550M (TDLR). Hoodline reports a planned 600 MW and, citing The Real Deal, $5B–$10B in total investment (Hoodline).

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