IER

Studies & Data

2026 Environmental Quality Index

The 2026 Environmental Quality Index (EQI) highlights the United States as a leading energy producer while maintaining high environmental and human freedom standards. Far from harming the planet, America’s energy...

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April 2025

Revenue Estimates for Repealing the Clean Vehicle Tax Credits

December 2024

Policy Brief: When Government Chooses Your Car

Samuel Peterson
December 2024

When Government Chooses Your Car

August 2023

The Challenges and Costs of Net-Zero and the Future of Energy

April 2023

The Economic and Strategic Importance of Domestic Mineral Production

February 2021

China and the Rare Earth Supply Chain Policy Brief