Analysis of U.S. Transmission Grid Expansion Needs

This technical report outlines the urgent need for significant expansion of the U.S. electric transmission grid to meet increasing power demand and ensure reliability. The document details findings from the U.S. Department of Energy's National Transmission Needs Study, which indicates a median requirement for a 57% increase in transmission infrastructure by 2035. Despite the clear necessity for enhanced transmission capacity, the construction of new high-voltage lines has drastically slowed over the past decade. The report highlights that annual transmission spending has reached an all-time high of over $25 billion, primarily driven by reliability upgrades rather than new construction. Furthermore, it discusses federal initiatives aimed at incentivizing new transmission projects, including recent regulatory changes by the Federal Energy Regulatory Commission. The report emphasizes the importance of increasing federal funding and utility investment in new projects to facilitate a transition to a cleaner energy grid while also addressing the current limitations in transmission planning and development processes.