Carpenter
Carpenter is a 56 MW hydroelectric power plant in Garland County, Arkansas, operated by Entergy Arkansas LLC. EIA-860M lists 2 generating units here, inside MISO. Its units entered service in 1932.
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
- 56 MW
- 60.4 MW net summer
- Generating units
- 2
- In service
- 1932
- EIA plant ID
- 166
Where it is
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- County
- Garland County, Arkansas
- Coordinates
- 34.4425, -93.0262
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Entergy Arkansas LLC
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating
Carpenter: FAQ
- Where is Carpenter?
- In Garland County, Arkansas (AR). 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 Carpenter?
- 56 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Carpenter?
- EIA-860M names Entergy Arkansas LLC 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 Carpenter LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Entergy Arkansas LLC 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 "Carpenter LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Carpenter still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.