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250 MW Batteries (50 MW) + Solar Photovoltaic (200 MW) operating in Lowndes, MS
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
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| 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
Tennessee Valley Authority (TVA)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
21.1K MWh
Latest Month
411.8K MWh
Annual Generation
18.8%
Capacity Factor
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2023
$1,361/kW
Est. Construction Cost
Total estimated cost: $340.3M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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