Description
The Interregion Transmission Need, Projections, Five Year, US (v1.0) dataset estimates the additional interregional transmission capacity needed through 2040 under multiple load and clean energy growth scenarios, as reported in the U.S. Department of Energy’s 2023 National Transmission Needs Study. It captures projected transmission system expansion requirements across regions at five-year intervals, highlighting where substantial new interregional connections may be required to support future demand growth and renewable integration.
Technical Description
The Interregion Transmission Need, Projections, Five Year, US (v1.0) dataset provides modeled estimates of new interregional transmission capacity required across U.S. regions for 2030, 2035 and 2040. Data are sourced from the U.S. Department of Energy’s 2023 National Transmission Needs Study and represent median regional deployment results under three scenario groups: Moderate/Moderate, Moderate/High, and High/High. Each region includes projected new-TW-mi, perc-Growth-TW-mi, and total-TW-mi values representing additional terawatt-miles needed and total projected needed capacity relative to the 2020 baseline. The dataset supports spatial and temporal analysis of interregional transmission expansion needs under varying demand and clean energy growth conditions.