Mississippi’s interconnection queue is diverse, spanning MISO South, Southern Company, and TVA. With more than 15.5 GW of renewables under study alongside 2.7 GW of gas, the state shows strong solar and hybrid activity, though totals vary widely across queues. While MISO South drives most of the renewables, Southern Company adds solar, hybrid, and gas projects through utility-led filings, and TVA contributes solar, storage, and gas. This spread highlights both the opportunities and challenges of planning in a state that sits at the crossroads of multiple transmission systems.
Mississippi by the Numbers
- Solar: 10.6 GW (8.3 GW in MISO, 1.4 GW in Southern, 0.9 GW in TVA)
- Wind: 0.75 GW (all in MISO)
- Hybrid: 3.2 GW (2.7 GW in MISO, 0.3 GW in Southern, 0.14 GW in TVA)
- Battery Storage (Standalone): 1.0 GW (0.45 GW in MISO, 0.58 GW in TVA)
- Renewables Total: 15.6 GW
- Gas: 2.7 GW (1.5 GW in MISO, 0.7 GW in Southern, 0.57 GW in TVA)
Resource Mix
- Solar dominates at 10.6 GW, concentrated mostly in MISO but with contributions from both Southern and TVA.
- Hybrid projects total 3.2 GW, led by MISO, showing developer interest in pairing solar with storage.
- Battery storage adds 1.0 GW, split between MISO and TVA.
- Wind is limited at 0.75 GW, all in MISO.
- Gas totals 2.7 GW across all three operators.
Click to view the full fall interconnection report.
Interconnection Queue Data:
MISO - https://www.misoenergy.org/planning/resource-utilization/GI_Queue/gi-interactive-queue/
Southern Company - https://www.southerncompany.info/power-bi/transmission-policy-services/index.html
