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Opening ~Aug 2026๐Ÿ“‹Project Registered๐Ÿ—๏ธ New Construction๐Ÿ’ต This project is privately funded, on private land for private use.

Callisto II Energy Center

12100 Hiram Clarke Rd, Houston, TX 77045, Houston, TX, 77045

Callisto II Energy Center is a new construction project at 12100 Hiram Clarke Rd, Houston, in Harris County, TX, tracked from its Texas Department of Licensing and Regulation (TDLR) registration. Under construction, estimated completion Aug 2026. The project has an estimated value of $57.5M across about 550,000 sq ft.

Pre-Construction15%

๐Ÿ“ŠProject Metrics

TDLR #TABS2026004170
$57.5M
Project Value
550,000
Square Feet
$105/sqft
Cost/SqFt
9 months
Duration
Registered:Oct 24, 2025
Start:Nov 3, 2025
Target:Aug 1, 2026
Remaining:39 days
๐Ÿ“‹

Project Registered

Project has been registered with TDLR and is in pre-construction phase

Callisto II Energy Center is a New Construction project located at 12100 Hiram Clarke Rd, Houston, TX 77045 in Houston, Texas. The project has an estimated value of $57.5M covering 550,000 sq ft. CALLISTO II ENERGY CENTER LLC is the property owner and Electrical Consultants, Inc. is the design firm of record. The project was registered with TDLR on October 24, 2025.

โ“Frequently Asked Questions

What is Callisto II Energy Center?

Callisto II Energy Center is a new construction project at 12100 Hiram Clarke Rd in Houston, Texas, registered with the Texas Department of Licensing and Regulation (TDLR). Scope of work: Construction of 300MW 2-hour battery energy storage facility and substation to interconnect to utility grid. Scope includes private access road, civil/drainage, foundations, and water line for fire protection system.

Is Callisto II Energy Center open in Houston?

Callisto II Energy Center is still under construction in Houston, TX, with an estimated completion of Aug 2026 according to its TDLR registration.

Where is Callisto II Energy Center located?

Callisto II Energy Center is located at 12100 Hiram Clarke Rd, Houston, TX, 77045, in Harris County.

Who is the owner or developer of Callisto II Energy Center?

CALLISTO II ENERGY CENTER LLC is the property owner/developer of record for Callisto II Energy Center, per its TDLR project registration.

Who is the architect or design firm for Callisto II Energy Center?

Electrical Consultants, Inc. is the design firm of record for Callisto II Energy Center, according to its TDLR filing.

How much does Callisto II Energy Center cost and how big is it?

Callisto II Energy Center has an estimated construction value of $57.5M and approximately 550,000 square feet (about $105/sqft), based on its TDLR filing.

๐Ÿ“‹Scope of Work

Construction of 300MW 2-hour battery energy storage facility and substation to interconnect to utility grid. Scope includes private access road, civil/drainage, foundations, and water line for fire protection system.

Note: This project is registered under the Texas Accessibility Standards (TAS) program. TDLR registration is required for commercial and public facility construction to ensure compliance with accessibility requirements under Texas Government Code Chapter 469.

๐Ÿ“…Compliance Timeline

Project Registered
October 24, 2025
Construction Start
November 3, 2025
Expected Completion
August 1, 2026

๐Ÿ“…Project Timeline

Filed

Oct 24, 2025

Review Complete

Inspection Complete

Closed

Quick Actions

View on TDLR
TDLR ID: TABS2026004170

Property Owner

๐Ÿ‘ค
CALLISTO II ENERGY CENTER LLC
Contact: Cian Kelleher
View company profile
1108 LAVACA ST Suite 110-349, Austin, Texas 78701
(512) 375-4052

Design Firm

๐Ÿ›๏ธ
Electrical
10 projects ยท $57.5M
View company profile
3521 Gabel Rd, Billings, Montana 59102
(406) 259-9933

Registered Accessibility Specialist

๐Ÿ“‹
BLAIR,BAKER
RAS #19
539 W COMMERCE ST SUITE 180, DALLAS, TX 75208
(800) 880-6986

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