DOE opens comment period on draft 2026 Transmission Needs Study—key deadlines

DOE has opened a 60-day comment period on a draft national assessment of U.S. electricity transmission needs. The Federal Register lists the deadline as midnight EST on September 8, 2026 (DOE’s landing page says the period closes September 7, 2026). Comments go to NeedsStudy.Comments@hq.doe.gov.

Why it matters for consumers and businesses: DOE’s draft focuses on where capacity constraints and congestion could make the grid harder to operate reliably—and how those pressures could translate into higher system and congestion costs over time.

What DOE released on July 9, 2026

On July 9, 2026, the Department of Energy’s Office of Electricity released the draft 2026 National Transmission Needs Study for public comment. DOE says the study is required by the Federal Power Act and is intended to identify “high impact needs” by examining current and anticipated future transmission capacity constraints and congestion across the nation.

What the draft says it’s analyzing

DOE’s draft highlights that congestion is not evenly spread across time. In particular, DOE says the majority of transmission congestion is concentrated in 5% of the hours—often during periods involving factors such as large day-ahead to real-time price swings, high net load, cold weather, and high intermittent generation.

DOE also ties the “why now” to load growth drivers, including data centers, expanding domestic manufacturing, large industrial loads, and broader electrification of industry.

What DOE is asking the public to weigh in on

DOE is inviting feedback on the draft’s analysis used, as well as any gaps, conclusions, or other suggestions for improving the draft study.

Common misconceptions to avoid: not a build-out approval, not NIETC designation

DOE emphasizes that the Needs Study is not intended to displace existing transmission planning processes and does not identify specific transmission solutions to address needs.

It also does not designate National Interest Electric Transmission Corridors (NIETCs). DOE’s FAQ explains that NIETC designation decisions would occur through a separate designation report/process, not through this Needs Study.

What comes next after the comment window

After the comment deadline, DOE says it will review submissions and incorporate them into the final study as appropriate. DOE also explains in Federal Register materials that the Needs Study can inform how DOE coordinates transmission-related authorities and funding—because it would inform any decision to exercise NIETC designation authority.

Sources

• U.S. Department of Energy (Office of Electricity) press release — July 9, 2026: draft released + comment period opened
• Federal Register notice — Notice of Availability of Draft 2026 National Transmission Needs Study and Request for Comment