Criteria: Substations within 25.0 mi delivering ≥250 MW worst-case offtake in at least one ERCOT study year. Thresholds: 0 (Fail), 1 (Tier 3), 4+ (Tier 1) Target POIs.
Geoforge curated dataset · 2026-08-17
TARGET POIs
11
≥250 MW worst-case
4 Phase-capable (≥125 MW) · 78 candidates in radius
NEAREST TARGET POI
7.6 mi
LINNVILLE
138 kV · 309 MW worst-case · Transient — dips to 225 MW in 2026, dips to 237 MW in 2027
HIGHEST HEADROOM
1511 MW
JULIA
345 kV · 18.3 mi from site
STUDY SERIES
ERCOT 2025 Series
ERIS No Neg · Study years 2026, 2027, 2028, 2029, 2030, 2031, 2032
CORRIDOR DIVERSITY
Corridor diversity: 1 distinct voltage class(es), 26 distinct corridor(s) (appro
Summary
Ranked POI Candidates (78 canonical candidates within 25.0 mi)
| RANK |
NAME |
kV |
DIST (mi) |
CLASS |
WC MW (Yr) |
BC MW |
TARGET YR |
Q |
BADGE |
| 1 |
REFUGE |
345 |
8.7 |
Target Poi |
276 (2026) |
669 |
from 2026 study |
● |
Transient — dips to 203 MW in 2029 |
| 2 |
PLEDGER |
138 |
14.3 |
Target Poi |
441 (2026) |
514 |
from 2026 study |
● |
Sustained |
| 3 |
WEST COLUMBIA |
138 |
15.6 |
Target Poi |
901 (2026) |
956 |
from 2026 study |
|
Sustained |
| 4 |
NORTH COLUMBIA |
138 |
15.6 |
Target Poi |
855 (2026) |
855 |
from 2026 study |
|
Sustained |
| 5 |
Gulf Star |
138 |
15.8 |
Target Poi |
314 (2026) |
396 |
from 2026 study |
● |
Transient — dips to 120 MW in 2029 |
| 6 |
NEW GULF |
138 |
17.2 |
Target Poi |
284 (2026) |
358 |
from 2026 study |
● |
Transient — dips to 109 MW in 2029 |
| 7 |
JULIA |
345 |
18.3 |
Target Poi |
1511 (2026) |
1713 |
from 2026 study |
|
Sustained |
| 8 |
NASH |
138 |
22.6 |
Target Poi |
698 (2026) |
704 |
from 2026 study |
|
Sustained |
| 9 |
LINNVILLE |
138 |
7.6 |
Target Poi |
309 (2028) |
309 |
2028 |
|
Transient — dips to 225 MW in 2026, dips to 237 MW in 2027 |
| 10 |
SWEENY |
138 |
9.9 |
Target Poi |
282 (2029) |
376 |
2029 |
|
Transient — dips to 135 MW in 2026, dips to 151 MW in 2027, dips to 208 MW in 2028 |
| 11 |
West Columbia Main |
230 |
15.5 |
Target Poi |
282 (2029) |
437 |
2029 |
|
Transient — dips to 135 MW in 2026, dips to 151 MW in 2027, dips to 208 MW in 2028 |
| 12 |
CANEY |
138 |
2.9 |
Phase Capable |
220 (2026) |
714 |
from 2026 study |
|
|
| 13 |
Wagyu Solar GSU |
138 |
20.5 |
Phase Capable |
191 (2026) |
191 |
from 2026 study |
|
|
| 14 |
BRAZOSPORT |
138 |
24.2 |
Phase Capable |
150 (2027) |
151 |
2027 |
|
|
| 15 |
RETRIEVE |
138 |
22.0 |
Phase Capable |
131 (2030) |
184 |
2030 |
|
|
Corridor diversity: 1 distinct voltage class(es), 26 distinct corridor(s) (approximate, by endpoint-name grouping).
Worst-Case Offtake (MW) — Target & Phase-Capable POIs
Distance vs Worst-Case Offtake
Analysis
11 substations within 25.0 mi can deliver ≥250 MW worst-case offtake in at least one study year (2025 Series): REFUGE, PLEDGER, WEST COLUMBIA. An additional 4 are phase-capable (≥125 MW). Corridor diversity: 1 distinct voltage class(es), 26 distinct corridor(s) (approximate, by endpoint-name grouping).
Target load is set at 250 MW (hyperscale default). All offtake values are ERCOT 2025 Series planning-study envelopes (ERIS, No Neg variant) and represent the published capacity range, not firm deliverable commitments. Per-year worst-case is the minimum offtake across all non-null scenarios in each study year; classification requires at least one year where worst-case meets the target.
Measurement: WGS 84 / UTM zone 15N (EPSG:32615), utm | Transformation Applied: EPSG:4326→EPSG:32615 (0.0 m)
Next Steps
- Validate top-ranked POI capacity with ERCOT planning studies and local utility (CenterPoint Energy)
- Engage transmission service provider for interconnection cost estimates at REFUGE (345 kV) and PLEDGER (138 kV)
- Evaluate Transient-badge substations for phased deployment timing relative to dip years
- Confirm queue position status and timeline for projects at nearby POIs
Sources
- US Substations — Primary substation and ERCOT offtake headroom data (2025 Series)
- US Transmission Lines — Corridor-diversity check via Sub 1/Sub 2 endpoint connectivity
- US ISO/RTO Interconnection Queue Positions — Queue-activity tagging for tie-break sort (ERCOT)
- Offtake values are planning-study envelopes from ERCOT scenario studies, not firm deliverable commitments
- Queue-active match is approximate (text matching on POI name vs substation name)