Walton Street Substation
Walton Street Substation is a 2 MW oil-fired power plant in St Francois County, Missouri, operated by City of Farmington - (MO). EIA-860M lists 1 generating unit here, inside MISO. Its unit entered service in 2003.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 2 MW
- 1.7 MW net summer
- Generating units
- 1
- In service
- 2003
- EIA plant ID
- 56598
Where it is
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- County
- St Francois County, Missouri
- Coordinates
- 37.7881, -90.4336
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- City of Farmington - (MO)
- Primary energy source
- Petroleum
- Technologies
- Petroleum Liquids
- Status
- Standby/Backup
Walton Street Substation: FAQ
- Where is Walton Street Substation?
- In St Francois County, Missouri (MO). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Walton Street Substation?
- 2 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
- Who owns Walton Street Substation?
- EIA-860M names City of Farmington - (MO) as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Walton Street Substation LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — City of Farmington - (MO) here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Walton Street Substation LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Walton Street Substation still running?
- EIA-860M files it as "Standby/Backup" for 2026-07. Statuses change monthly, and this page follows the monthly release.