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National Transmission Planning Study - Long-Term Modeling Results

Published by National Renewable Energy Laboratory (NREL) | Department of Energy | Metadata Last Checked: January 27, 2026 | Last Modified: 2024-10-09T15:39:11Z
The National Transmission Planning Study (NTP Study) analyzed the transformation needed to ensure the U.S. transmission system continues to reliably meet electricity demand as the power sector evolves. The study linked several long- and short-term power systems models to test numerous interregional and regional transmission buildout scenarios. The results included in this dataset are from the long-term capacity expansion modeling, completed with NREL's ReEDS model. This includes nearly 100 future transmission scenarios with a wide range of economic, reliability, and resilience conditions. The dataset includes all the results visualized in the Tableau Public site, as linked below.

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