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250 MW Batteries (50 MW) + Solar Photovoltaic (200 MW) operating in Lowndes, MS — Tennessee Valley Authority
250 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2025
Operating Since
Coordinates
33.4189, -88.6189
County
Lowndes, MS
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Origis Energy USA, Inc | Origis Energy | — |
| Owner(s) | Origis Energy USA, Inc | Origis Energy | — |
| Status | Operating | operating | — |
GEM identifies the owner as Origis Energy
This entity is not yet in the GEM ownership database — chain unavailable.
Golden Triangle is a 250 MW hybrid power plant located in Lowndes County, Mississippi. The facility, which combines solar photovoltaic generation with battery energy storage, is owned and operated by Origis Energy USA, Inc. It began operating in 2025 and consists of two generators utilizing both solar and battery technologies. The plant's solar arrays employ a fixed tilt tracking system. Golden Triangle is interconnected to the Tennessee Valley Authority balancing authority within the SERC NERC region.
The plant's battery energy storage system (BESS) has a duration of 4 hours. In its most recent year of operation, Golden Triangle generated 411,833 MWh of electricity, achieving a capacity factor of 18.8%. Golden Triangle is ranked as the second largest of three hybrid plants in Mississippi, and 201st out of 514 hybrid plants nationally.
Generated from EIA, GEM, and public data sources
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
21.1K MWh
Latest Month
411.8K MWh
Annual Generation
18.8%
Capacity Factor
2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $340.3M
This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
Last updated 2026-03-14
View all 7 articlesTennessee Valley Authority (TVA)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP