TAP148421
SubstationNorth Carolina · DUKE ENERGY PROGRESS - (NC)
At a glance
TAP148421 is an electric transmission substation in North Carolina, operated by DUKE ENERGY PROGRESS - (NC). It is classified as high-voltage (230 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 & operation
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #101874 | 230 kV | DUKE ENERGY PROGRESS - (NC) | IN SERVICE | 1.0 mi |
| #112800 | 230 kV | PROGRESS ENERGY CAROLINAS INC | IN SERVICE | 0.5 mi |
| #179142 | 230 kV | DUKE ENERGY PROGRESS - (NC) | IN SERVICE | 10.0 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of TAP148421, 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 |
|---|---|---|---|---|---|---|---|
| NEW BERN | Substation-Adjacent | NC | Craven County | 230 kV | 300 MW | 5.3 yrs | 61.0 |
| UNKNOWN111441 | Substation-Adjacent | NC | Craven County | 230 kV | 300 MW | 5.3 yrs | 60.9 |
| UNKNOWN111442 | Substation-Adjacent | NC | Craven County | 230 kV | 300 MW | 5.3 yrs | 60.9 |
| TAP148457 | Substation-Adjacent | NC | Craven County | 230 kV | 300 MW | 5.3 yrs | 60.9 |
| TAP148412 | Substation-Adjacent | NC | Craven County | 230 kV | 300 MW | 5.3 yrs | 60.4 |
| UNKNOWN111638 | Substation-Adjacent | NC | Jones County | 230 kV | 300 MW | 5.3 yrs | 60.3 |
| UNKNOWN112020 | Substation-Adjacent | NC | Onslow County | 230 kV | 300 MW | 5.3 yrs | 59.6 |
| UNKNOWN172461 | Substation-Adjacent | NC | Jones County | 230 kV | 300 MW | 5.3 yrs | 59.5 |
Who owns the transmission lines at TAP148421?
The 3 connected lines listed above are owned by DUKE ENERGY PROGRESS - (NC), PROGRESS ENERGY CAROLINAS INC. Line voltages range from 230 kV to 230 kV. Their combined recorded length is about 11.5 miles.
How do candidate sites near TAP148421 score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 61 on the 0–100 DC Readiness scale. They fall in Craven County, Jones County, Onslow County. The North Carolina average across 2,778 scored sites is 55.1. 1,087 of those North Carolina sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is TAP148421 substation?
TAP148421 has a maximum voltage of 230 kV. That places it in the 230–344 kV band. The median named US substation in this dataset is 115 kV, so TAP148421 is above the national midpoint.
How many transmission lines connect to TAP148421 substation?
3 transmission lines terminate at or pass through TAP148421 in the HIFLD line data. The connected lines listed here run at 230 kV. Together the listed lines cover about 11.5 miles.
Who owns TAP148421 substation?
HIFLD lists DUKE ENERGY PROGRESS - (NC) as the operator of TAP148421, with PROGRESS ENERGY CAROLINAS INC as co-owner.
Where is TAP148421 substation located?
TAP148421 is in North Carolina at 34.7705, -77.4217. The datacenter candidate sites closest to it are in Craven County, Jones County, Onslow County.
Are there datacenter candidate sites near TAP148421 substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of TAP148421. The highest-scoring is NEW BERN at 61/100. Across North Carolina, the average DC Readiness score is 55.1.
More in North Carolina
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, “TAP148421 substation, North Carolina”, https://gridcensus.com/substations/north-carolina/tap148421-5f8d8388 (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 TAP148421 substation, North Carolina 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.