Battery storage projects in Mississippi

4 operating battery storage projects in Mississippi with 152 MW of battery capacity, largest first. From EIA-860M, August 2026.

Projects

4

Battery capacity

152 MW

Net generation, 2025

734 GWh

3 of 4 projects reported

Largest

Golden Triangle

50 MW

Largest battery storage projects in Mississippi

#PlantBattery MW2025 net generation, GWhGWh, 2025Operator
1Golden TriangleLowndes County · Solar and battery storage50412Origis Energy USA, Inc
2Golden Triangle IILowndes County · Solar and battery storage50319Origis Energy USA, Inc
3OptimistClay County · Solar and battery storage50–Origis Energy USA, Inc
4Walnut Grove Demonstration PlantLeake County · Solar and battery storage1.53.3Mississippi Power Co

Every project with battery storage, solar and wind hybrids included. MW is battery nameplate only; net generation covers the whole project. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources

More power plant lists for Mississippi