Mammoth Solar Nears Completion of 1.3 GW Project in Indiana

Final 900 MWac Phases Approach Commercial Operation

Doral Renewables has announced that the final three phases of its Mammoth Solar project in Pulaski County, Indiana, are nearing commercial operation. Mammoth South, Mammoth Central I and Mammoth Central II each have a capacity of 300 MWac, adding a combined 900 MWac to the project.

With these phases coming online, the 1.3 GW Mammoth Solar complex is nearing full completion, placing it among the largest operational solar projects in the United States. Once fully operational, the project is expected to generate enough electricity to power approximately 275,000 homes annually.

More Than One Million U.S.-Made Solar Modules

The project features more than one million U.S.-manufactured solar modules and plans to incorporate agrivoltaic practices, allowing agricultural activities such as crop cultivation and grazing to coexist with solar power generation.

The development has also secured approximately $1.5 billion in debt and tax equity financing, including $1.3 billion in construction debt.

Potential Data Center Development Signals New Demand

Beyond electricity generation, Doral Renewables is reportedly exploring plans to develop a data center at the Mammoth site, potentially supplying power directly to AI operators.

Such a model could bring large-scale solar generation closer to energy-intensive computing facilities, helping address growing electricity demand from artificial intelligence while creating new commercial opportunities for renewable energy developers.

However, the proposed data center remains a future development possibility. The project's broader expansion also highlights the importance of local community support, land-use planning and grid infrastructure for utility-scale solar deployment in the United States.