United States. Department of the Treasury. "U.S. Departments of Treasury and Energy Release Additional Guidance on Inflation Reduction Act Programs to Incentivize Manufacturing and Clean Energy Investments in Hard-Hit Coal Communities," Press Releases of the United States Department of the Treasury (May 31, 2023). https://fraser.stlouisfed.org/title/6111/item/632588, accessed on September 12, 2026.