Doral Secured Indiana Solar Farm Expansion Permits
The 1,100-megawatt phase two expansion offers operators a model for integrating agrivoltaic practices into large-scale energy projects.
Updated on Oct. 5, 2026 in Construction
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Doral has secured construction permits for the second phase of the Mammoth Solar project in Indiana, adding 1,100 megawatts of capacity to the facility. The project utilizes agrivoltaic practices, integrating electricity generation with crop cultivation and livestock grazing across 80,000 dunams of land.
Why it matters
The project demonstrates how site operators can utilize livestock grazing as a cost-effective vegetation control measure to keep panels exposed. By aligning development with Indiana clean energy goals, the project secures federal tax incentives while providing fixed payments to local landowners.
The second phase of the solar farm involves projected construction costs between NIS 2.5 billion and NIS 3 billion. Once operational, the phase is expected to generate NIS 350 million in annual revenue and NIS 300 million in annual EBITDA.
The players
Doral
An international renewable energy developer focused on solar projects and integrated agrivoltaic land management.
Bank of America
A multinational financial services firm serving as a tax partner for major infrastructure and energy development projects.
Truist Bank
A U.S.-based regional banking institution acting as a financial partner for the development of renewable energy facilities.
The details
The facility is designed to feed electricity directly into the PJM grid, though the current plans do not include energy storage capabilities. Operators manage the site through an agrivoltaic model, where livestock grazing maintains vegetation levels, ensuring consistent sunlight exposure for the solar arrays. Bank of America and Truist Bank are serving as designated tax partners to facilitate the project's financial structure.
Timeline
2029 marks the scheduled completion of the solar farm to reach its total capacity.
Market Landscape
This project follows a pattern of developers aggressively moving through permitting phases to capitalize on federal clean energy tax incentives. It underscores the broader industry trend of pairing utility-scale solar generation with agricultural use to secure land access.
Site operators should note that integrating livestock grazing can significantly reduce vegetation maintenance costs while unlocking new land-use revenue streams. Those in the energy sector should review their permitting timelines to ensure they remain eligible for current federal tax credit cycles.
The takeaway
Large-scale energy projects are increasingly moving toward dual-use models to optimize land utility and maintenance costs. Review your current property management agreements to see if similar land-sharing models could improve your operational margins.
Further reading
Learn more about the local industry at Construction.
Source note: This article includes information reported by Constructionreview.
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Should large solar farm developments be required to maintain agricultural land use in your area?
