Edged Energy Campus — Caldwell County
Proposed size
462 MW
Site area
320 ac (of 2,718-ac parcel)
Buildings
2
Building area
2,000,000 sq ft
Cooling
Waterless (ThermalWorks) — company claim, unverified
Developer
Edged Energy
Edged Energy, which markets a proprietary dry-cooling system (ThermalWorks) that it claims eliminates evaporative water use during data center operations, filed preliminary plans for a 320-acre campus in Martindale, Caldwell County in December 2025. The campus will include two data center buildings of approximately 1 million sq ft each (2M sq ft total) with 462 MW of capacity. Civil engineer Jordan Schaefer (Kimley-Horn) told Caldwell County commissioners that water use on the campus "would be reserved for administrative spaces and restrooms" — meaning all data center cooling would rely on ThermalWorks dry-cooling technology (company-claimed waterless cooling; not independently verified as of April 2026). For initial power, the project will use TurboCell clean-fuel natural gas while waiting approximately 7 years for permanent grid connection. Edged US is the North American operations entity; its parent company, Endeavour (Connecticut), also owns ThermalWorks.
Water Impact
Daily water use (estimated range)
Unknown
Water returned per day
None reported
Per Developer disclosure; independent verification pending
vs. 5M gal/day (typical 400 MW facility)
- Water intake
- Unknown
- Lost to evaporation
- 100%
- Returned to system
- 0% (None reported)
Direct water figures are estimates from permit applications and developer disclosures. Indirect (power generation) figures are calculated estimates. Actual water use depends on technology choices, operating capacity, and weather conditions.
Location
Address: Martindale area, Caldwell County (320 acres), Martindale, Caldwell County, TX
Water source: Claims waterless cooling via ThermalWorks technology
Infrastructure
- Land owner
- Capital Land Investments 1 LP (Owner Agent: RYAN LLC)
- Water provider
- Maxwell SUD (unverified)
- Power provider
- LCRA / Bluebonnet Electric Co-op
- On-site generation
- TurboCell natural gas + grid
- Backup power
- Tier 4
- Tax incentives
- Caldwell County abatement (TIRZ Order 03-2026, Caldwell 142 Reinvestment Zone #1)
Construction
- Start date
- April 15, 2026
- Target completion
- August 15, 2028
Permitted — the decision is made, but conditions still matter
The primary decision cannot be undone, but the conditions attached to the approval can still be negotiated or enforced. Officials can be held accountable for permit violations. Community pressure matters for shaping how the project is operated and what monitoring is required.
Timeline
August 15, 2028
Substantial completion deadline per Caldwell County tax agreement
Caldwell County tax agreement requires Edged Energy campus to be substantially complete by August 15, 2028. The 320-acre campus in Martindale is to include two buildings of ~1 million sq ft each (2M sq ft total) at 462 MW.
April 15, 2026
Construction begins per Caldwell County tax agreement
Edged Energy's TIRZ/tax agreement with Caldwell County specifies April 15, 2026 as the construction start date for the 320-acre campus in Martindale. The agreement requires substantial completion by August 15, 2028. Developer: Edged Energy (subsidiary of Endeavour, CT); civil engineer Jordan Schaefer (Kimley-Horn and Associates).
Sources
- 1. Edged Energy proposes major data center campus in Caldwell County — Idcnova, 2025-12-01. Link →(opens in new tab)
- 2. Edged Partner ThermalWorks Launches AI-Ready Waterless Cooling System Worldwide — Edged US, 2023-10-01. Link →(opens in new tab)
- 3. Edged Energy Launches in U.S. with Four Ultra-Efficient Data Centers Delivering 300+ MW — PR Newswire, 2024-02-13. Link →(opens in new tab)
- 4. Edged eyes second Dallas-Fort Worth campus — Data Center Dynamics, 2025-01-01. Link →(opens in new tab)
- 5. ThermalWorks Chillers Installed at Edged Phoenix — ThermalWorks, 2024-01-01. Link →(opens in new tab)
- 6. With 5 data centers on the horizon, Hays County water advocates see the fight as just beginning — KUT Radio, 2026-02-26. Link →(opens in new tab)
- 7. Edged Energy proposes major data center campus in Caldwell County — Martindale location detail — IDCNova, 2026-01-01. Link →(opens in new tab)
- 8. Edged US Builds Waterless, High-Density AI Data Center Campuses at Scale — Data Center Frontier, 2025-06-01. Link →(opens in new tab)
- 9. Caldwell CAD Parcel 28355 — Capital Land Investments I LP (Edged Energy site, HWY 142, Maxwell, 1,462.95 ac total) — Caldwell County Appraisal District, 2026-04-08. Link →(opens in new tab)
Community Notes
Edged Energy's Caldwell County proposal is in Martindale, approximately 40 miles south of Austin. No community meetings, public hearings, or organized opposition specific to this project have been identified as of April 2026. County commissioners were expected to discuss a development agreement, but no date or outcome has been publicly reported. Civil engineer Jordan Schaefer (Kimley-Horn), presenting on behalf of Edged to Caldwell County commissioners, stated that water use on the campus "would be reserved for administrative spaces and restrooms" — confirming that data center cooling would be entirely waterless. A private sewer system is planned. For initial power, Edged will use TurboCell clean-fuel natural gas technology while waiting approximately 7 years for permanent grid connection. Key context on the ThermalWorks "waterless cooling" claim: ThermalWorks is NOT an independent third party — it is a sister company of Edged Energy under the same parent, Endeavour (Connecticut). All performance claims (PUE 1.15, 73% energy reduction, zero evaporative water use) originate exclusively from Edged/ThermalWorks/Endeavour press releases. No peer-reviewed study, utility metering data, or independent engineering audit has been published. ThermalWorks chillers are installed at Edged Phoenix, but no third-party operational data has been released. Until independent verification is published, all water-reduction claims should be described as unverified company assertions — though the civil engineer's commissioner presentation is stronger evidence than marketing materials alone. Corporate structure: Endeavour (parent, CT) → Edged Energy (global brand) → Edged US (North American operations, Bill Greenwood, Director of Development). The "independent" cooling partner is not arm's-length from the developer.