56 MW Hydro operating in Garland, AR — Midcontinent Independent Transmission System Operator, Inc..
56 MW
Nameplate Capacity
2
Generators
units
Conventional Hydroelectric
Technology
1932
Operating Since
Coordinates
34.4425, -93.0262
County
Garland, AR
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Entergy Arkansas LLC | Entergy Arkansas | — |
| Owner(s) | Entergy Arkansas LLC | Entergy | — |
| Status | Operating | operating | — |
The Carpenter Hydroelectric Generating Station is located in Garland County, Arkansas. The plant, owned by Entergy and operated by Entergy Arkansas LLC, has a total capacity of 56 MW derived from two conventional hydroelectric generators. Carpenter went online in 1932 and is the 10th largest power plant in Arkansas out of 19, and the 282nd largest nationally out of 1464 plants.
In the most recent year of reporting, Carpenter generated 102,431 MWh of electricity, equating to a capacity factor of 20.9%. The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the SERC NERC region. Financial data indicates an installed cost of $456.55 per kW.
Generated from EIA, GEM, and public data sources
NERC Region
SERC
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc..
Grid Voltage
115 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
6.3K MWh
Latest Month
102.4K MWh
Annual Generation
20.9%
Capacity Factor
$484/kW
Installed Cost
$18.6/MWh
Operating Cost
Entergy Arkansas, Inc.
Reporting Utility
Cumulative Installed Cost
Per-Unit Cost Trends
Market Position
ISO/RTO Market
MISO
LMP Node
EAI.CARPEN1
Pricing Hub
ARKANSAS.HUB
Node Source
EIA-860 direct report
Arkansas Wildlife Weekly Fishing Report
Jim Harris. Managing Editor Arkansas Wildlife Magazine. Carrie Collison, friend and “deckhand” for crappie guide Capt.
Great Scott... £30,000 job with all living costs paid! The only catch? It's in the Antarctic
The list of positions includes chefs, plumbers, carpenters, and plumbers, as well as plant operators, boating officers and meteorological observers.
Arkansas Wildlife Weekly Fishing Report
Jim Harris. Managing Editor Arkansas Wildlife Magazine. Leslie Allen bundled up and braved the winter elements with guide Mark Crawford on...
Arkansas Wildlife Weekly Fishing Report
Jim Harris. Managing Editor Arkansas Wildlife Magazine. Grandfather Martin Nichols and his grandson, Thadius, from north Arkansas,...
Last updated 2026-03-14
View all 10 articles