Figure 2: The NEPA Process Causes the Longest Delays

In your experience, which permits (federal, state, or local) have caused the longest project delay?

Source: Research Findings Report. Pathways to Accelerating Clean Energy: Assessing Non-Cost Barriers. Environmental Resources Management, Inc (ERM), 3 Nov. 2025, https://www.thirdway.org/report/full-research-findings-pathways-to-accelerating-clean-energy-pace-report.