BELLBROOK
SubstationOhio · DAYTON POWER & LIGHT CO
At a glance
BELLBROOK is an electric transmission substation in Ohio, on DAYTON POWER & LIGHT CO's transmission network. It is classified as sub-transmission (138 kv) and connects 2 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
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #119386 | 138 kV | DAYTON POWER & LIGHT CO | IN SERVICE | 2.8 mi |
| #127778 | 138 kV | DAYTON POWER & LIGHT CO | IN SERVICE | 2.9 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of BELLBROOK, 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 |
|---|---|---|---|---|---|---|---|
| UNKNOWN113672 | Substation-Adjacent | OH | Hamilton County | 345 kV | 600 MW | 5.2 yrs | 68.0 |
| PORT UNION SUBSTATION | Substation-Adjacent | OH | Butler County | 345 kV | 600 MW | 5.2 yrs | 67.7 |
| FOSTER | Substation-Adjacent | OH | Warren County | 345 kV | 600 MW | 5.2 yrs | 67.6 |
| TAP137572 | Substation-Adjacent | OH | Warren County | 345 kV | 600 MW | 5.2 yrs | 67.6 |
| UNKNOWN113020 | Substation-Adjacent | OH | Warren County | 345 kV | 600 MW | 5.2 yrs | 67.5 |
| UNKNOWN112844 | Substation-Adjacent | OH | Warren County | 345 kV | 600 MW | 5.2 yrs | 67.3 |
| UNKNOWN113595 | Substation-Adjacent | OH | Butler County | 345 kV | 600 MW | 5.2 yrs | 67.2 |
| TODHUNTER SUBSTATION | Substation-Adjacent | OH | Butler County | 345 kV | 600 MW | 5.2 yrs | 67.0 |
How does BELLBROOK compare with other substations in Ohio?
Ohio has 2,565 substation records in HIFLD, of which 465 carry a station name; the rest are unnamed tap points, risers and line ends. 189 named substations in the state are in BELLBROOK's 115–229 kV band (41% of named stations). 60 sit in a higher band. 60 named substations in Ohio 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 BELLBROOK?
The 2 connected lines listed above are owned by DAYTON POWER & LIGHT CO. Line voltages range from 138 kV to 138 kV. Their combined recorded length is about 5.7 miles.
How do candidate sites near BELLBROOK score?
The 8 highest-scoring candidate sites within about 25 miles range from 67 to 68 on the 0–100 DC Readiness scale. They fall in Hamilton County, Butler County, Warren County. The Ohio average across 3,933 scored sites is 54.8. 835 of those Ohio sites are classed as substation sites (candidate locations generated at an existing substation).
Frequently asked questions
What voltage is BELLBROOK substation?
BELLBROOK 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 BELLBROOK is above the national midpoint.
How many transmission lines connect to BELLBROOK substation?
2 transmission lines terminate at or pass through BELLBROOK in the HIFLD line data. The connected lines listed here run at 138 kV. Together the listed lines cover about 5.7 miles.
Who owns BELLBROOK substation?
HIFLD does not publish substation owners directly. Most of the transmission lines that end at BELLBROOK belong to DAYTON POWER & LIGHT CO. GridCensus derives this from the line data, so confirm ownership with the utility for anything contractual.
Where is BELLBROOK substation located?
BELLBROOK is in Ohio at 39.6386, -84.0860. The datacenter candidate sites closest to it are in Hamilton County, Butler County, Warren County.
Are there datacenter candidate sites near BELLBROOK substation?
GridCensus lists at least 8 scored candidate sites within roughly 25 miles of BELLBROOK. The highest-scoring is UNKNOWN113672 at 68/100. Across Ohio, the average DC Readiness score is 54.8.
Other 138 kV substations in Ohio
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, “BELLBROOK substation, Ohio”, https://gridcensus.com/substations/ohio/bellbrook-6019de6d (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 BELLBROOK substation, Ohio 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.