Mammoth North Solar
Doral Renewables LLCStarke County
Mammoth North Solar is a solar power facility with 400 MW of EIA-reported operating capacity in Starke County, Indiana, registered as EIA Plant ID 65957. Mammoth North, LLC owns and operates the plant. Mammoth North Solar is the first phase of the Mammoth Solar development and Doral Renewables' first project to achieve commercial operations. Doral describes it as one of the largest U.S. solar projects and the largest solar facility in Indiana.
Mapped infrastructure geometry associated with this asset.
Solar Photovoltaic
Mammoth North Solar is operating.
345 kV · AEP Indiana Michigan Transmission Company, Inc. (IM Transco)
PJM
EIA plant 65957 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| GEN1 | Solar Photovoltaic | Operating | 400 | Unknown |
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Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| GEN1 | 400 MW 400 MW summer | Solar Photovoltaic PV | Nov 2024 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
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Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
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Project milestones and public references behind the asset profile.
Doral's project page says Mammoth Solar began in 2019 as a grassroots effort involving local farmers; Mammoth North is the development's first phase.
PJM · Starke County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Doral Renewables executed a long-term PPA with AEP Energy for the Mammoth development; Mammoth North is identified as having a PPA with American Electric Power.
Construction of Mammoth North began in March 2022.
Doral closed $392 million of construction project financing led by Deutsche Bank, together with approximately $175 million of Bank of America tax-equity commitment.
Doral Renewables reports that Mammoth North became operational in October 2024.
EIA-860 lists generator GEN1 with this operating date.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Mammoth North Solar reports 400 MW solar of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Mammoth North Solar is a Solar Photovoltaic facility in Starke County, IN, participating in the PJM market.
Mammoth North Solar is in Starke County, IN, inside the PJM balancing area.
Mammoth North Solar is operated by Mammoth North, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Mammoth North Solar reported 762.7 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
Mammoth North Solar interconnects at Ora Ora Switch Station (Ora Ora substation), on the AEP Indiana Michigan Transmission Company, Inc. (IM Transco) system.
By capacity, Mammoth North Solar ranks #21 of 7,597 operating plants of the same technology nationally. It ranks #2 of 126 in IN.
