TAP151121
SubstationFlorida
At a glance
TAP151121 is an electric transmission substation in Florida. It is classified as sub-transmission (138 kv) and connects 3 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
No owner is recorded for the lines that connect here.
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #121788 | 138 kV | — | IN SERVICE | 0.1 mi |
| #122486 | 138 kV | — | IN SERVICE | 8.5 mi |
| #137848 | 138 kV | — | IN SERVICE | 0.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP151121, 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 |
|---|---|---|---|---|---|---|---|
| LAKE TARPON | Substation-Adjacent | FL | Pinellas County | 500 kV | 1,000 MW | 3.7 yrs | 69.6 |
| UNKNOWN120373 | Substation-Adjacent | FL | Hillsborough County | 230 kV | 300 MW | 3.7 yrs | 68.7 |
| F J Gannon | Brownfield | FL | Hillsborough County | — | 635 MW | 3.7 yrs | 68.4 |
| STATE ROUTE 60 | Substation-Adjacent | FL | Hillsborough County | 230 kV | 300 MW | 3.7 yrs | 67.6 |
| 11TH AVENUE | Substation-Adjacent | FL | Hillsborough County | 230 kV | 300 MW | 3.7 yrs | 67.5 |
| JUNEAU | Substation-Adjacent | FL | Hillsborough County | 230 kV | 300 MW | 3.7 yrs | 67.4 |
| UNKNOWN127931 | Substation-Adjacent | FL | Pinellas County | 230 kV | 300 MW | 3.7 yrs | 67.4 |
| DAVIS | Substation-Adjacent | FL | Hillsborough County | 230 kV | 300 MW | 3.7 yrs | 67.3 |
How do candidate sites near TAP151121 score?
The 8 highest-scoring candidate sites within about 25 miles range from 67 to 70 on the 0–100 DC Readiness scale. They fall in Pinellas County, Hillsborough County. The Florida average across 4,344 scored sites is 56. 1,539 of those Florida sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP151121 substation?
TAP151121 has a maximum voltage of 138 kV. That places it in the 115–229 kV band. The median named US substation in this dataset is 115 kV, so TAP151121 is above the national midpoint.
How many transmission lines connect to TAP151121 substation?
3 transmission lines terminate at or pass through TAP151121 in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 8.6 miles.
Where is TAP151121 substation located?
TAP151121 is in Florida at 27.9774, -82.4985. The datacenter candidate sites closest to it are in Pinellas County, Hillsborough County.
Are there datacenter candidate sites near TAP151121 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP151121. The highest-scoring is LAKE TARPON at 70/100. Across Florida, the average DC Readiness score is 56.
More in Florida
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, “TAP151121 substation, Florida”, https://gridcensus.com/substations/florida/tap151121-d4d909ac (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 TAP151121 substation, Florida 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.