Amazon AWS Bitter Blue Campus — Building B
Building area
119,407 sq ft
Investment
$0.1B
Developer
Amazon Web Services
Amazon AWS filed plans to build a second building (Building B) at its Bitter Blue campus at 12807 Donop Road in Elmendorf, southeast Bexar County. The two-story, 119,407 sq ft facility is a $65 million investment with an estimated February 2029 completion date.
Water Impact
Daily water use (estimated range)
Unknown
Water returned per day
None reported
Per MW capacity not disclosed; water provider unconfirmed for southeast Bexar site, based on Southeast Bexar County; outside recharge zone; standard water estimate not applied without MW figure
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: 12807 Donop Road, Elmendorf, Bexar County, TX
Distance to aquifer edge: 8 miles
Infrastructure
- Power provider
- CPS Energy / ERCOT
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
February 1, 2029
Bitter Blue campus projected completion — February 2029 per TDLR schedule
Per the TDLR permit record, the Amazon Bitter Blue campus at 12807 Donop Road, Elmendorf has a projected completion date of February 2029. At full build the two-building campus will deliver approximately 120,000 sq ft of data center capacity.
Source →(opens in new tab)March 1, 2026
Construction begins at Amazon Bitter Blue campus per TDLR schedule
Per TDLR filing, construction at the Amazon Bitter Blue campus (12807 Donop Road, Elmendorf) was scheduled to commence March 2026 with a completion target of February 2029. The two-story, 119,407 sq ft Building B is the primary permitted structure at this $65 million facility.
Source →(opens in new tab)January 1, 2024
Amazon Data Services files TDLR permit for Bitter Blue campus — $65M, 119,407 sq ft
Amazon Data Services filed a TDLR permit in January 2024 for a two-story, nearly 120,000 sq ft single-tenant data center at 12807 Donop Road (Bitter Blue campus) in Elmendorf, Bexar County. Estimated cost: $65 million; scheduled construction start March 2026; completion February 2029. Architect: Gensler.
Source →(opens in new tab)January 1, 2024
Baxtel reports AWS planning three new San Antonio-area data centers including Bitter Blue
Baxtel reported on AWS's trio of new San Antonio data center filings, including the Bitter Blue campus at 12807 Donop Road in Elmendorf. The article noted that planning documents revealed the filing directly by Amazon Data Services, and identified a second COPT-filed project on Potranco Road.
Source →(opens in new tab)
Sources
- 1. AWS files to develop data centers in San Antonio, Texas — Data Center Dynamics, 2024-01-01. Link →(opens in new tab)
- 2. Amazon Plans $65M Data Center on San Antonio South Side — Hoodline, 2026-03-01. Link →(opens in new tab)
Community Notes
Southeast Bexar County location; outside the Edwards Aquifer recharge zone. Closer to the Carrizo-Wilcox aquifer system. Lower water/aquifer risk than west-side facilities.