Doral Renewables ceremonially flipped the switch on the last three phases of the Mammoth Solar project during an Oct. 6 ceremony.
The event officially marked the beginning of commercial operations at the Mammoth South, Mammoth Central I and Mammoth Central II phases in Pulaski and Starke counties. It also marked the completion of the 1.3 gigawatt site.
“Today is the culmination of true partnership between the Pulaski County community and Doral,” said Nick Cohen, president and CEO of Doral Renewables. “We started this project as a vision to bring a major economic development project to the county and an energy project to the state, and it grew beyond our wildest dreams.”
Together, the $285 million projects represent 900 megawatts of clean energy capacity.
“With demand for electricity skyrocketing, we need every electron we can get on the grid,” said Suzanne Jaworowski, Indiana’s secretary of energy. “We want to create an energy infrastructure that will draw economic development and do it in a way that preserves our way of life and our agricultural
environment. This project is a great example of that.”
In June 2025, Doral Renewables selected Virginia-based Bechtel to deliver the three key phases. Bechtel is a global engineering, construction and project management company known for its large-scale infrastructure projects such as Hoover Dam.
The project was completed in 18 months by up to 1,800 workers each day during peak construction. Workers installed up to 20,000 panels a day.
“What we take pride in is the unions that supported us, that answered the call every day: through the heat, through the snow and ice, through the
rain, the good and the bad,” said Finley Lewis, renewables operations manager for North America at Bechtel. “This was a project of commitment, of partnership, of dedication.”
Philadelphia-based Doral Renewables completed the first phase of the project, Mammoth North Solar, in July 2024.
The company will continue its dual-use policies, or agrivoltaics, that include crops, sheep and cattle grazing. The company also partners with Purdue University to help rural communities recover from extreme weather events. Part of Mammoth Solar is a demonstration zone for the Midwest Agrivoltaics for Resilient Communities program.
