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3 MW Batteries (2 MW) + Solar Photovoltaic (2 MW) operating in Leake, MS
3 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Solar Photovoltaic
2023
Operating Since
Coordinates
32.5955, -89.4540
County
Leake, MS
Nearby Plants
Forward-looking, asset-specific exposure analytics combining climate hazards, generation variability, and counterparty risk into a single decision-grade view. Powered by InfraRisk.
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Mississippi Power Co | Mississippi Power | — |
| Owner(s) | Mississippi Power Co | Southern | — |
| Status | Operating | operating | — |
The Walnut Grove Demonstration Plant is a 3 MW hybrid power plant located in Leake County, Mississippi. It began operating in 2023 and is owned by Southern Company and operated by Mississippi Power Co. The plant utilizes both solar photovoltaic and battery storage technologies, with two generators on site. The primary fuel source is listed as MWH, indicating the plant draws power from the grid to charge its batteries in addition to solar generation. The battery energy storage system (BESS) has a capacity of 1.5 MWh and a duration of 1 hour, utilizing lithium-ion battery chemistry. The solar array uses single-axis tracking.
The plant's latest annual generation was 3,572 MWh, resulting in a capacity factor of 13.5%. Walnut Grove Demonstration Plant is ranked 4th out of 4 power plants in Mississippi and 1066th out of 1205 plants nationally. The plant operates within the Southern Company Services, Inc. - Trans balancing authority and the SERC NERC region.
Generated from EIA, GEM, and public data sources
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
Southern Company Services, Inc. - Trans (SOCO)
Grid Voltage
12.5 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
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.
167 MWh
Net Discharge
3.6K MWh
Annual Net Energy
13.5%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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Historic financial signal for this asset — PPA, LCOE, market value where reported. The base for forward bankability and insurance analytics on the InfraSure platform.
Data from 2024
$27.9/MWh
Energy Value
$18.5/MWh
Capacity Value
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.
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