12,324 MW of Hydropower Hits Relicensing by 2036, and the Industry Counts Its Own Burden Two Ways
- Analysis FERC & Federal Policy & Markets
Marin Holt
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- 8 minutes read
- Capacity facing relicensing 2026-2036: 12,324 MW across 348 FERC licenses
- Documents analyzed: 4,819, covering 1,642 projects in 46 states
- Same-project condition change: 79 to 806 across 87 projects
- Fleet-wide change since 1986: Roughly doubled
- Conditions carrying a cost estimate: 13% of section 4(e), 6% of section 18
The National Hydropower Association published an analysis this week arguing that federal licensing conditions have grown roughly tenfold since 1980. The trade group reviewed 4,819 licensing documents filed between 1980 and 2026, covering more than 5,000 mandatory conditions across 1,642 FERC-regulated projects in 46 states. That set covers about 93 percent of active US hydropower licenses. The timing is the point NHA wants readers to take. A total of 348 FERC licenses representing 12,324 MW of capacity expire between 2026 and 2036, during the steepest load growth in decades.
Mandatory conditions are binding requirements that federal resource agencies attach to a license under sections 4(e) and 18 of the Federal Power Act. FERC does not have authority to reject or modify them. The US Forest Service accounted for about two-thirds of the conditions NHA examined. Four agencies imposed 97 percent of them. Those are the Forest Service, the Bureau of Land Management, the National Marine Fisheries Service and the US Fish and Wildlife Service.
The cost disclosure numbers are the most concrete finding. NHA reports a cost estimate attached to only 13 percent of section 4(e) conditions and 6 percent of section 18 fishway prescriptions. Most projects also carry at least one open-ended reservation of authority, which lets an agency add requirements later in the license term. An owner deciding whether to relicense a plant therefore prices an obligation that nobody has quantified.
The Gap
The tenfold headline and the underlying data describe two different measurements, and NHA reports both. The tenfold figure comes from 87 projects compared against their own earlier licenses, separated by a median of 32 years. Those 87 projects carried 79 conditions in the earlier documents and 806 in the current ones. Across all licenses that contain mandatory conditions, the count of section 4(e) and section 18 requirements has roughly doubled since 1986.
A doubling over four decades and a tenfold rise are both real numbers from the same study. They answer different questions. The 87-project sample is the one that generated the headline, and NHA does not report how those 87 were selected out of 1,642.
The method deserves a second caveat. NHA states that large language models did the condition extraction, with human auditing on top. That approach scales to 4,819 documents in a way manual review does not. It also means the condition counts rest on a classification step whose error rate the report does not publish. The study is also advocacy. NHA represents the owners who pay for these conditions, and the report closes with a list of what Washington should change.
Why It Matters
Hydropower supplies dispatchable capacity and fast ramping that grid operators struggle to replace. The 12,324 MW of licenses expiring between 2026 and 2036 is the number to watch. A plant that retires rather than relicense subtracts firm capacity from a system already short of it. NHA argues the burden falls hardest on small plants, since condition counts track project size weakly.
Critical Perspective
NHA’s own numbers carry the criticism, because the tenfold rise comes from 87 projects while the fleet-wide count of section 4(e) and section 18 requirements roughly doubled since 1986. The report does not say how those 87 were drawn from 1,642 assets, which is the one disclosure that would let a reader judge whether the headline describes the fleet or a subset. The Federal Energy Regulatory Commission publishes the relicensing docket record itself, and that record, not a condition count, shows which licenses have actually lapsed. If only 13 percent of section 4(e) conditions carry a cost estimate, how would any owner price the decision this report says they face?
For anyone modeling regional capacity through 2036, treat the 12,324 MW as an exposure figure rather than a retirement forecast. No part of this analysis shows how many of those 348 licenses actually fail to renew. The FERC docket record settles that question, not a trade group condition count. The useful takeaway for resource planners is narrower and better supported. On most of these licenses, the cost of compliance is not written down anywhere.
Sources
- Power Engineering – Hydropower licensing requirements have exploded
- International Water Power – US hydropower licensing conditions rise tenfold, analysis suggests
- National Hydropower Association – Affordable Power, Broken Process
- FERC – Handbook for Hydroelectric Project Licensing
