Stock Island
Stock Island is a 127 MW oil-fired power plant in Monroe County, Florida, operated by Utility Board of Key West City (FL). EIA-860M lists 7 generating units here. Its units entered service between 1978 and 2012.
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
- 126.5 MW
- 114.5 MW net summer
- Generating units
- 7
- In service
- 1978–2012
- EIA plant ID
- 6584
Where it is
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- County
- Monroe County, Florida
- Coordinates
- 24.5633, -81.7342
- Balancing authority
- FMPP
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Utility Board of Key West City (FL)
- Primary energy source
- Petroleum
- Technologies
- Petroleum Liquids
- Status
- Operating
Every plant Utility Board of Key West City (FL) reports to EIA →
Stock Island: FAQ
- Where is Stock Island?
- In Monroe County, Florida (FL). 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 Stock Island?
- 127 MW of nameplate capacity across 7 units, as of the EIA-860M release for 2026-07.
- Who owns Stock Island?
- EIA-860M names Utility Board of Key West City (FL) 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 Stock Island LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Utility Board of Key West City (FL) 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 "Stock Island LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Stock Island still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.