Electric Substations in Missouri
74 named substations in Missouri, with the highest-voltage facilities listed first. Each substation profile shows voltage class, connected transmission lines, and the datacenter candidate sites closest to it.
At a glance
How is Missouri's substation network split by voltage?
By maximum voltage, the named substations break down as 2 at 500 kV and above; 31 at 345–499 kV; 20 at 115–229 kV; 10 at 69–114 kV; 11 withvoltage not recorded. 45% of Missouri's named substations operate at 345 kV or above, against 8% across all 16,654 named US substations. The state median of 345 kV is above the national median of 115 kV.
How does Missouri compare with other states?
Missouri ranks 38th of 50 states and DC by number of named substations and 15th by named substations at 345 kV or above. It also has 3,413 scored datacenter candidate sites with an average DC Readiness score of 55.7 (national average 53), and an average power sub-score of 37.4 against 37.4 nationally. Most of those sites (1,574) are in the MISO market.
Which substations in Missouri have the highest voltage?
| Substation | Max voltage | Connected lines | Line owner |
|---|---|---|---|
| NEW MADRID | 500 kV | 16 | UNION ELECTRIC CO - (MO) |
| WEST NEW MADRID | 500 kV | 6 | UNION ELECTRIC CO - (MO) |
| ATCHISON | 345 kV | 4 | KCP&L GREATER MISSOURI OPERATIONS CO. |
| AUDRAIN | 345 kV | 3 | UNION ELECTRIC CO - (MO) |
| BLAND | 345 kV | 4 | UNION ELECTRIC CO - (MO) |
| BROOKLINE | 345 kV | 6 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| CALLAWAY | 345 kV | 5 | UNION ELECTRIC CO - (MO) |
| DOGWOOD | 345 kV | 9 | KCP&L GREATER MISSOURI OPERATIONS CO. |
| ESSEX | 345 kV | 4 | UNION ELECTRIC CO - (MO) |
| FAIRPORT | 345 kV | 3 | UNION ELECTRIC CO - (MO) |
| FRANKS | 345 kV | 8 | UNION ELECTRIC CO - (MO) |
| GRAY SUMMIT | 345 kV | 4 | UNION ELECTRIC CO - (MO) |
| HAWTHORNE | 345 kV | 12 | KCP&L GREATER MISSOURI OPERATIONS CO. |
| HUBEN | 345 kV | 6 | CITY OF LEBANON - (MO) |
| IATAN | 345 kV | 6 | KCP&L GREATER MISSOURI OPERATIONS CO. |
| KELSO | 345 kV | 4 | UNION ELECTRIC CO - (MO) |
| LABADIE | 345 kV | 14 | UNION ELECTRIC CO - (MO) |
| LOOSE CREEK | 345 kV | 3 | UNION ELECTRIC CO - (MO) |
| LUTESVILLE | 345 kV | 3 | UNION ELECTRIC CO - (MO) |
| MARIOSA DELTA | 345 kV | 3 | UNION ELECTRIC CO - (MO) |
| MASON | 345 kV | 13 | UNION ELECTRIC CO - (MO) |
| MAYWOOD | 345 kV | 1 | — |
| MONTGOMERY | 345 kV | 10 | UNION ELECTRIC CO - (MO) |
| MORGAN | 345 kV | 3 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| OVERTON (345KV) | 345 kV | 3 | UNION ELECTRIC CO - (MO) |
| PALMYRA | 345 kV | 5 | UNION ELECTRIC CO - (MO) |
| RUSH ISLAND | 345 kV | 10 | UNION ELECTRIC CO - (MO) |
| SAINT JOSEPH | 345 kV | 7 | KCP&L GREATER MISSOURI OPERATIONS CO. |
| SIBLEY | 345 kV | 4 | KCP&L GREATER MISSOURI OPERATIONS CO. |
| SIOUX | 345 kV | 16 | UNION ELECTRIC CO - (MO) |
| ST FRANCOIS | 345 kV | 10 | UNION ELECTRIC CO - (MO) |
| THOMAS HILL STATION (345KV) | 345 kV | 3 | UNION ELECTRIC CO - (MO) |
| TYSON | 345 kV | 10 | UNION ELECTRIC CO - (MO) |
| JIM HILL | 161 kV | 5 | UNION ELECTRIC CO - (MO) |
| JUNCTION | 161 kV | 3 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| MARIES | 161 kV | 7 | UNION ELECTRIC CO - (MO) |
| MAURER LAKE | 161 kV | 2 | — |
| MORGAN | 161 kV | 5 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| NASHUA | 161 kV | 5 | KCP&L GREATER MISSOURI OPERATIONS CO. |
| NICHOLS | 161 kV | 3 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| NO MARIES | 161 kV | 4 | UNION ELECTRIC CO - (MO) |
| OVERTON (161KV) | 161 kV | 8 | UNION ELECTRIC CO - (MO) |
| PLATTE CITY | 161 kV | 5 | KCP&L GREATER MISSOURI OPERATIONS CO. |
| SOUTHWEST | 161 kV | 5 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| SOUTHWEST | 161 kV | 3 | UNION ELECTRIC CO - (MO) |
| TABLE ROCK DAM POWER STATION | 161 kV | 9 | SOUTHWESTERN POWER ADMINISTRATION |
| THOMAS HILL | 161 kV | 15 | UNION ELECTRIC CO - (MO) |
| TRUMAN | 161 kV | 3 | KCP&L GREATER MISSOURI OPERATIONS CO. |
| WEST BELT | 161 kV | 2 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| CENTRAL | 138 kV | 4 | UNION ELECTRIC CO - (MO) |
| GRAY SUMMIT (138KV) | 138 kV | 7 | UNION ELECTRIC CO - (MO) |
| POPLAR | 138 kV | 2 | UNION ELECTRIC CO - (MO) |
| RIVERMINE | 138 kV | 10 | UNION ELECTRIC CO - (MO) |
| FORT | 69 kV | 2 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| GOLDEN 69 | 69 kV | 4 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| GRAND | 69 kV | 1 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| HIGHWAY M | 69 kV | 2 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| KICKAPOO | 69 kV | 2 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| LAUREL | 69 kV | 1 | CITY UTILITIES OF SPRINGFIELD - (MO) |
| MONROE | 69 kV | 2 | CITY UTILITIES OF SPRINGFIELD - (MO) |
Every named substation in Missouri
All 74 named substations, grouped by voltage band.
500 kV and above · 2
345–499 kV · 31
115–229 kV · 20
Frequently asked questions
How many electric substations are in Missouri?
HIFLD records 1,656 substations in Missouri, of which 74 carry a station name. That is the 38th-most named substations of any state in the dataset.
What is the highest-voltage substation in Missouri?
2 named substations in Missouri share the top voltage of 500 kV, including NEW MADRID, WEST NEW MADRID.
Which substation in Missouri connects the most transmission lines?
NEW MADRID has the most connected transmission lines of the named substations listed here, with 16 at up to 500 kV.
How many substations in Missouri are 345 kV or higher?
33 of 74 named substations (45%) operate at 345 kV or above, compared with 8% nationally. Missouri ranks 15th of 50 states and DC for named substations at that level.
How many datacenter candidate sites in Missouri are at substations?
1,002 of the 3,413 scored candidate sites in Missouri are substation sites — locations generated at an existing substation. Scored sites across Missouri average 55.7 on the 0–100 DC Readiness scale, against 53 nationally.
Looking for a specific record? The directory lists every substation in Missouri, A to Z.
More on Missouri, and states with similar counts
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, “Electric substations in Missouri”, https://gridcensus.com/substations/missouri (data as of June 29, 2026).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
Every site and score for substations in Missouri 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.