DUNNELLON
SubstationFlorida · DUKE ENERGY FLORIDA, LLC
At a glance
DUNNELLON is an electric transmission substation in Florida, on DUKE ENERGY FLORIDA, LLC's transmission network. It is classified as distribution (69–115 kv) and connects 5 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 |
|---|---|---|---|---|
| #115515 | 69 kV | DUKE ENERGY FLORIDA, LLC | IN SERVICE | 5.7 mi |
| #122103 | 69 kV | DUKE ENERGY FLORIDA, INC | IN SERVICE | 2.1 mi |
| #124128 | 69 kV | DUKE ENERGY FLORIDA, LLC | IN SERVICE | 6.9 mi |
| #136109 | 69 kV | DUKE ENERGY FLORIDA, LLC | IN SERVICE | 6.1 mi |
| #160837 | 69 kV | DUKE ENERGY FLORIDA, LLC | IN SERVICE | 3.6 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of DUNNELLON, 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 |
|---|---|---|---|---|---|---|---|
| CRYSTAL RIVER | Substation-Adjacent | FL | Citrus County | 500 kV | 1,000 MW | 3.7 yrs | 66.5 |
| UNKNOWN121765 | Substation-Adjacent | FL | Marion County | 230 kV | 300 MW | 3.7 yrs | 61.9 |
| SEMINOLE ELECTRIC COOPERATIVE | Substation-Adjacent | FL | Marion County | 230 kV | 300 MW | 3.7 yrs | 61.0 |
| UNKNOWN120464 | Substation-Adjacent | FL | Marion County | 230 kV | 300 MW | 3.7 yrs | 61.0 |
| ANDERSON | Substation-Adjacent | FL | Sumter County | 230 kV | 300 MW | 3.7 yrs | 60.4 |
| TAP155704 | Substation-Adjacent | FL | Citrus County | 230 kV | 300 MW | 3.7 yrs | 60.3 |
| EC Near G2 Energy Marion LLC | Greenfield | FL | Marion | — | — | 3.7 yrs | 60.2 |
| OZ Marion | Greenfield | FL | Marion | — | — | 3.7 yrs | 60.2 |
How does DUNNELLON compare with other substations in Florida?
Florida has 2,533 substation records in HIFLD, of which 943 carry a station name; the rest are unnamed tap points, risers and line ends. 144 named substations in the state are in DUNNELLON's 69–114 kV band (15% of named stations). 628 sit in a higher band. 15 named substations in Florida operate at 345 kV or above. The highest voltage recorded in the state is 500 kV, and the state median is 138 kV.
Who owns the transmission lines at DUNNELLON?
The 5 connected lines listed above are owned by DUKE ENERGY FLORIDA, LLC, DUKE ENERGY FLORIDA, INC. Line voltages range from 69 kV to 69 kV. Their combined recorded length is about 24.3 miles.
How do candidate sites near DUNNELLON score?
The 8 highest-scoring candidate sites within about 25 miles range from 60 to 67 on the 0–100 DC Readiness scale. They fall in Citrus County, Marion County, Sumter County, Marion. 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 DUNNELLON substation?
DUNNELLON has a maximum voltage of 69 kV. That places it in the 69–114 kV band. The median named US substation in this dataset is 115 kV, so DUNNELLON is below the national midpoint.
How many transmission lines connect to DUNNELLON substation?
5 transmission lines terminate at or pass through DUNNELLON in the HIFLD line data. The connected lines listed here run at 69 kV. Together the listed lines cover about 24.3 miles.
Who owns DUNNELLON substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at DUNNELLON belong to DUKE ENERGY FLORIDA, LLC, and others to DUKE ENERGY FLORIDA, INC. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is DUNNELLON substation located?
DUNNELLON is in Florida at 29.0377, -82.4580. The datacenter candidate sites closest to it are in Citrus County, Marion County, Sumter County.
Are there datacenter candidate sites near DUNNELLON substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of DUNNELLON. The highest-scoring is CRYSTAL RIVER at 67/100. Across Florida, the average DC Readiness score is 56.
Other 69 kV substations in Florida
- AVON PARK· 6 lines
- GANNON· 6 lines
- LAKE WALES· 6 lines
- KENNEDY· 5 lines
- UNIVERSITY OF SOUTH FLORIDA· 5 lines
- ALEXANDER STREET· 4 lines
- BUSHNELL EAST· 4 lines
- DADE CITY· 4 lines
- All named substations in Florida· 943 stations
- Datacenter candidate sites in Florida· 4,344 sites
- Brownfield and retired plant sites in Florida
- 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, “DUNNELLON substation, Florida”, https://gridcensus.com/substations/florida/dunnellon-60ce4d90 (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 DUNNELLON 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.