Mammoth South Solar Project — Plant Summary
- EIA Plant ID
- 66545
- Capacity
- 300 MW
- Primary Fuel
- Solar
- Technology
- Solar Photovoltaic
- Status
- Under construction
- Location
- Pulaski, IN
- Operating Since
- —
- Generators
- 1
- Operator
- Mammoth South LLC
- Parent Company
- —
- Balancing Authority
- PJM Interconnection, LLC
- ISO/RTO
- PJM
- NERC Region
- RFC
Mammoth South Solar Project
Under constructionSolarGEM: construction
Ranked #3 of 140 Solar plants in IN#140 of 7447 nationally
300 MW Solar under construction in Pulaski, IN — PJM Interconnection, LLC
EIAGEM
300 MW
Nameplate Capacity
1
Generators
unit
Solar Photovoltaic
Technology
—
Operating Since
Location
Coordinates
41.0953, -86.6916
County
Pulaski, IN
Nearby Plants
- Mammoth Central II Solar FacilitySolar300 MW · 0.6 km
- Mayapple Solar 1Solar224 MW · 4.8 km
- IMPA Winamac Solar ParkSolar3.3 MW · 10.6 km
Ownership & Operator
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Mammoth South LLC | Doral Renewables LLC [100%] | — |
| Owner(s) | Mammoth South LLC | Doral Renewables LLC [100%] | — |
| Status | Under construction | construction | — |
Ownership Chain
GEM identifies the owner as Doral Renewables LLC [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
The Mammoth South Solar Project is a 300 MW solar photovoltaic power plant located in Pulaski County, Indiana. The plant's primary fuel source is solar energy. It is owned and operated by Mammoth South LLC. The facility consists of a single generator and utilizes fixed-tilt solar tracking technology.
Mammoth South operates within the PJM Interconnection, LLC balancing authority and the RFC NERC region. It is the second-largest solar power plant in Indiana out of 35, and ranks 88th nationally among 639 solar facilities.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC
Grid Voltage
345 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
No generation data available for this plant.
Financial Data
No financial data available for this plant.
Pricing & Market Data
LOW confidenceMarket Position
ISO/RTO Market
PJM
LMP Node
—
Pricing Hub
N ILLINOIS HUB
Node Source
OSM spatial match
News & Articles (10)Beta
Industry·corporate
State officials tour Mammoth Solar in Winamac
The Mammoth Solar project site in Winamac was on display Nov. 7 for Indiana Secretary of Energy Suzanne Jaworowski and Executive Director of...
Mammoth Solar (other)Suzanne Jaworowski (other)
Northwest Indiana Business Magazine·4 months ago
Deals·project finance
Project Finance Brief: Doral Renewables Secures $1.5 Billion for Solar Project
Doral Renewables, a utility-scale renewable energy project developer, secured $1.5 billion in construction project financing for the Mammoth South, Mammoth...
Doral Renewables (developer)
Mercom Capital Group·10 months ago
Deals·debt financing
Doral secures US$1.3 billion financing for 900MW Mammoth solar PV project in Indiana
US independent power producer (IPP) Doral Renewables has closed a US$1.3 billion construction debt financing package to support its solar projects in Pulaski...
Doral Renewables (developer)
PV Tech·10 months ago
Industry·corporate
Doral picks Bechtel for Mammoth task
Doral Renewables has picked Bechtel to deliver three key phases of its Mammoth Solar project in Indiana, one of the largest PV plants in the...
Doral Renewables (other)Bechtel (other)
reNews - Renewable Energy News·10 months ago
Last updated 2026-03-14
View all 10 articles