T1 Services Powers Compliance for ENTEK’s $1.5 Billion Battery Plant in Indiana

In Terre Haute, IN, a groundbreaking clean energy project is underway, and T1 Services is playing a critical role in making it happen. ENTEK, the only U.S.-owned and U.S.-based producer of “wet-process” lithium ion battery separator materials, is investing $1.5 billion to build a massive manufacturing campus in Vigo Industrial Park. The facility will span 340 acres and include four buildings totaling 1.4 million square feet, producing essential components for lithium ion batteries that power electric vehicles and energy storage systems.

While ENTEK leads the charge in manufacturing, T1 Services is the compliance and financial backbone of this project. Their expertise ensures that every step meets strict federal and Department of Energy requirements. Here’s what T1 brings to the table:

  • Certified Payroll Compliance & Auditing: Guaranteeing accurate, transparent payroll in line with the Davis-Bacon Act.
  • Apprenticeship Oversight: Monitoring and auditing apprenticeship programs to meet federal mandates.
  • Regular Compliance Audits: Keeping payroll and apprenticeship records in check throughout the project.
  • Financial Billing & Draw Support: Managing billing, processing draws, and

reconciling requests to keep the project financially sound.

  • On-Site Presence & Coordination: Providing real-time support and communication with project teams.

Construction began in September 2024 and is expected to finish by September 2027. With T1 Services ensuring compliance and financial integrity, ENTEK can focus on its mission: building a sustainable, resilient U.S. battery supply chain.

This partnership isn’t just about building a plant, it’s about building trust, accountability, and a cleaner energy future.


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Tribal One Professional Services

Tribal One Professional Services brings a full range of professional and technical services to federal, state, local and tribal government customers and commercial clients.