Golden Triangle II — Plant Summary
- EIA Plant ID
- 65291
- Capacity
- 200 MW
- Primary Fuel
- Solar
- Technology
- Batteries, Solar Photovoltaic
- Status
- Operating
- Location
- Lowndes, MS
- Operating Since
- 2024
- Generators
- 2
- Operator
- Origis Energy USA, Inc
- Parent Company
- —
- Annual Generation
- 319,334 MWh
- Capacity Factor
- 18.2%
- Balancing Authority
- Tennessee Valley Authority
- ISO/RTO
- —
- NERC Region
- SERC
Golden Triangle II
OperatingBESSSolarHybrid
Ranked #4 of 35 Solar plants in MS#372 of 7447 nationally
200 MW Batteries (50 MW) + Solar Photovoltaic (150 MW) operating in Lowndes, MS — Tennessee Valley Authority
EIAGEM
200 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2024
Operating Since
Location
Coordinates
33.4155, -88.6223
County
Lowndes, MS
Nearby Plants
- Golden TriangleBESS250 MW · 0.5 km
- Columbus MSBlack Liquor128.6 MW · 16.3 km
- Mississippi State UniversityNatural Gas26 MW · 17.1 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Origis Energy USA, Inc | Origis Energy | — |
| Owner(s) | Origis Energy USA, Inc | Origis Energy | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as Origis Energy
This entity is not yet in the GEM ownership database — chain unavailable.
About
Golden Triangle II is a 200 MW hybrid power plant located in Lowndes County, Mississippi. The facility, owned and operated by Origis Energy USA, Inc., commenced operations in 2024. It combines solar photovoltaic generation with battery energy storage, using single-axis trackers for the solar panels. The plant's battery energy storage system (BESS) has a capacity of 200 MWh and a duration of 4 hours, utilizing lithium-ion battery chemistry (LIB). The primary fuel type is listed as MWH, reflecting the hybrid nature of the plant.
Golden Triangle II operates within the Tennessee Valley Authority balancing authority and the SERC NERC region. In its latest year of operation, the plant generated 319,334 MWh, achieving a capacity factor of 18.2%. Financial data is available for the plant, sourced from LBNL Solar. The plant is ranked as the 3rd largest in Mississippi and 293rd nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
SERC
Balancing Authority
Tennessee Valley Authority
Grid Voltage
161 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
15.7K MWh
Latest Month
319.3K MWh
Annual Generation
18.2%
Capacity Factor
Financial DataBeta
Source: LBNL Utility-Scale SolarHIGH
$45.6/MWh
LCOE (Levelized Cost)
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (9)Beta
Deals·ppa
Origis Energy signs PPA for Mississippi PV plant with 800MWh battery storage system
Origis Energy has signed 200MW solar-plus-storage power purchase agreement (PPA) with utility Tennessee Valley Authority in Mississippi, US.
Origis Energy (seller)Tennessee Valley Authority (buyer)
Energy-Storage.News·1 years ago
Grid·capacity addition
2024 Top 400 Sourcebook: Mississippi Builds First Big Solar-Storage Complex
Work has completed on the first project of a planned 550-MW three-part solar energy generation complex in the Golden Triangle region of...
Engineering News-Record·1 years ago
Grid·capacity addition
Origis Energy brings Mississippi solar PV plant online with first BESS in three-project portfolio
US renewable energy developer Origis Energy has commissioned a 150MW solar-plus-storage project in the US state of Mississippi.
Origis Energy (developer)
Energy-Storage.News·1 years ago
Grid·capacity addition
Origis powers up Golden Triangle II solar-BESS combo in Mississippi
The 150-MWac Golden Triangle II solar farm with 50 MW of battery storage that Origis Energy developed and built in Mississippi has reached...
Origis Energy (developer)
Renewables Now·1 years ago
Last updated 2026-03-14
View all 9 articles