WALZEM ROAD
Substation-AdjacentBexar County, Texas · ERCOT
At a glance
WALZEM ROAD is a substation-adjacent datacenter candidate site in Bexar County, Texas, scoring 64.0/100 DC Readiness — 37th of 166 scored sites in the county. Its nearest substation is WALZEM ROAD (0 mi, 138 kV). It sits in the ERCOT grid region and the CITY OF SAN ANTONIO - (TX) service territory, where interconnection has averaged 3.5 years from request to operation. GridCensus catalogs 100 MW of candidate capacity here.
Power & interconnection
Speed to power
Texas note: Since August 3, 2026, ERCOT has paused approvals to energize new datacenter and crypto-mining loads of 75 MW or more until a verification audit and a community impact review are complete; both reports are due to the Public Utility Commission of Texas by December 10, 2026. ERCOT speed-to-power scores here were set before the pause and do not reflect it. ERCOT board update.
Deep queue and long historical waits — plan for a multi-year interconnection timeline and engage the utility early.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No statewide moratorium, but since Aug 3, 2026 ERCOT has paused approvals to energize new datacenter and crypto loads ≥75 MW pending an audit due Dec 10, 2026. SB 6 adds large-load obligations above 75 MW.
SB 6: loads ≥75 MW accept ERCOT emergency curtailment + contribute to interconnection cost.
Incentive detail: Chapter 313/Chapter 403 property tax abatements; Texas Enterprise Fund; no state income tax.
Site location
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How does WALZEM ROAD compare with other sites in Bexar County?
WALZEM ROAD ranks 37th of 166 scored candidate sites in Bexar County. Its 64.0/100 is roughly in line with the county average of 61.7. It is about 13% above the Texas average of 56.4 and about 20% above the national average of 53.2.
Against the Texas average, its strongest sub-score is fiber connectivity (96 vs 71) and its weakest is water (44 vs 46). Power and speed to power each carry 20% of the composite score, fiber 12%, water 7% and hazard 6%.
How close is WALZEM ROAD to power, fiber and other datacenters?
The nearest mapped substation, WALZEM ROAD, is about 0 miles away and operates at 138 kV. The nearest located transmission bottleneck is D5_S1_1 (ERCOT), 18 miles away. For connectivity, the nearest internet exchange facility is Lumen San Antonio 1 at 2.7 miles. 19 fiber providers report service at the location in FCC broadband data. The closest operating datacenter on record is Lumen San Antonio 1, 2.7 miles away.
What are the flood, water and hazard risks at WALZEM ROAD?
At the county level, FEMA's National Risk Index rates Bexar County "Very High".
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in Bexar County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| CALAVERAS 345 SWITCHYARD | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 70.0 |
| CAGNON ROAD | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 69.3 |
| ARTHUR VON ROSENBERG | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 68.9 |
| BROOKS FIELD | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 68.6 |
| SKYLINE | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 68.5 |
| HILL COUNTRY 345 | Substation-Adjacent | 345 kV | 600 MW | 3.5 yrs | 68.2 |
| EC Near W B Tuttle | Greenfield | — | — | 3.5 yrs | 68.1 |
| EC Near Tessman Road | Greenfield | — | — | 3.5 yrs | 67.4 |
WALZEM ROAD: common questions
What is the DC Readiness score of WALZEM ROAD?
WALZEM ROAD scores 64.0/100 on the GridCensus DC Readiness scale, rated good. It ranks 37th of 166 scored sites in Bexar County. The Bexar County average is 61.7 and the Texas average is 56.4.
What is the nearest substation to WALZEM ROAD?
The nearest mapped substation is WALZEM ROAD, about 0 miles away, at 138 kV. GridCensus catalogs 100 MW of candidate capacity for the site.
Which electric utility serves WALZEM ROAD?
CITY OF SAN ANTONIO - (TX) (municipal) holds the retail service territory that contains the site.
What grid region is WALZEM ROAD in?
WALZEM ROAD is in the ERCOT region. Projects interconnecting there have averaged a 3.5-year wait from queue request to operation.
How far is WALZEM ROAD from an internet exchange?
The nearest internet exchange facility is Lumen San Antonio 1, about 2.7 miles away; 19 fiber providers report service at the location.
Related pages
About this data
Source: GridCensus composite of HIFLD transmission and substation data, EIA, FEMA National Risk Index, FCC broadband data, PeeringDB and ISO interconnection queues, as published October 10, 2026 — GridCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “WALZEM ROAD, Bexar County, TX”, https://gridcensus.com/datacenter-sites/texas/bexar-county/walzem-road-64cbf37e (data as of October 10, 2026).
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
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Every site and score for WALZEM ROAD, Bexar County is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.