TOWER ROAD
SubstationIndiana · NORTHERN INDIANA PUB SERV CO
At a glance
TOWER ROAD is an electric transmission substation in Indiana, on NORTHERN INDIANA PUB SERV CO's transmission network. It is classified as high-voltage (345 kv) and connects 7 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Ownership
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #131313 | 345 kV | NORTHERN INDIANA PUB SERV CO | IN SERVICE | 22.7 mi |
| #142469 | 345 kV | NORTHERN INDIANA PUB SERV CO | IN SERVICE | 4.3 mi |
| #117166 | 138 kV | NORTHERN INDIANA PUB SERV CO | IN SERVICE | 22.9 mi |
| #104048 | 138 kV | NORTHERN INDIANA PUB SERV CO | IN SERVICE | 4.4 mi |
| #128368 | 138 kV | NORTHERN INDIANA PUB SERV CO | IN SERVICE | 5.7 mi |
| #123495 | 138 kV | NORTHERN INDIANA PUB SERV CO | IN SERVICE | 14.1 mi |
| #110070 | 138 kV | NORTHERN INDIANA PUB SERV CO | IN SERVICE | 5.7 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TOWER ROAD, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| SCHAHFER STATION | Substation-Adjacent | IN | Jasper County | 345 kV | 600 MW | 3.0 yrs | 67.2 |
| UNKNOWN122531 | Substation-Adjacent | IN | Cook County | 345 kV | 600 MW | 3.0 yrs | 65.9 |
| Bailly | Brownfield | IN | Porter County | 138 kV | 641 MW | 3.0 yrs | 65.9 |
| UNKNOWN122523 | Substation-Adjacent | IN | Lake County | 345 kV | 600 MW | 3.0 yrs | 65.6 |
| SHEFFIELD | Substation-Adjacent | IN | Lake County | 345 kV | 600 MW | 3.0 yrs | 65.6 |
| MUNSTER | Substation-Adjacent | IN | Lake County | 345 kV | 600 MW | 3.0 yrs | 65.4 |
| UNKNOWN122521 | Substation-Adjacent | IN | Lake County | 345 kV | 600 MW | 3.0 yrs | 65.2 |
| UNKNOWN122723 | Substation-Adjacent | IN | Berrien County | 345 kV | 600 MW | 3.0 yrs | 65.2 |
How does TOWER ROAD compare with other substations in Indiana?
Indiana has 2,077 substation records in HIFLD, of which 306 carry a station name; the rest are unnamed tap points, risers and line ends. 63 named substations in the state are in TOWER ROAD's 345–499 kV band (21% of named stations). 6 sit in a higher band. 69 named substations in Indiana operate at 345 kV or above. The highest voltage recorded in the state is 765 kV, and the state median is 138 kV.
Who owns the transmission lines at TOWER ROAD?
The 7 connected lines listed above are owned by NORTHERN INDIANA PUB SERV CO. Line voltages range from 138 kV to 345 kV. Their combined recorded length is about 79.8 miles.
How do candidate sites near TOWER ROAD score?
The 8 highest-scoring candidate sites within about 25 miles range from 65 to 67 on the 0–100 DC Readiness scale. They fall in Jasper County, Cook County, Porter County, Lake County. The Indiana average across 8,629 scored sites is 54. 1,024 of those Indiana sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TOWER ROAD substation?
TOWER ROAD has a maximum voltage of 345 kV and a minimum of 138 kV. That places it in the 345–499 kV band. The median named US substation in this dataset is 115 kV, so TOWER ROAD is above the national midpoint.
How many transmission lines connect to TOWER ROAD substation?
7 transmission lines terminate at or pass through TOWER ROAD in the HIFLD line data. The connected lines listed here run at 345 kV, 138 kV. Together the listed lines cover about 79.8 miles.
Who owns TOWER ROAD substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at TOWER ROAD belong to NORTHERN INDIANA PUB SERV CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is TOWER ROAD substation located?
TOWER ROAD is in Indiana at 41.4843, -87.1179. The datacenter candidate sites closest to it are in Jasper County, Cook County, Porter County.
Are there datacenter candidate sites near TOWER ROAD substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TOWER ROAD. The highest-scoring is SCHAHFER STATION at 67/100. Across Indiana, the average DC Readiness score is 54.
Other 345 kV substations in Indiana
- DUNE ACRES· 16 lines
- OLIVE· 15 lines
- COLUMBUS (345KV)· 13 lines
- CLIFTY CREEK· 11 lines
- PETERSBURG STATION· 11 lines
- ALLEN· 10 lines
- BEDFORD (138KV)· 10 lines
- DESOTO· 10 lines
- All named substations in Indiana· 306 stations
- Datacenter candidate sites in Indiana· 8,629 sites
- Brownfield and retired plant sites in Indiana
- Substations by state
About this data
Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: GridCensus, “TOWER ROAD substation, Indiana”, https://gridcensus.com/substations/indiana/tower-road-1acf09e4 (data as of June 29, 2026).
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
Go deeper than the public screen
Every site and score for TOWER ROAD substation, Indiana 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.