Full Title: Electric Highways: Accelerating and Optimizing Fast-Charging Deployment for Carbon-Free Transportation
Author(s): National Grid, CALSTART, RMI, Stable Auto, and Geotab
Publisher(s): National Grid and CALSTART
Publication Date: November 15, 2022
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Electric vehicle (EV) adoption has reached a tipping point. It is now accelerating toward mass market adoption, particularly in states taking proactive measures to encourage transportation electrification. Meeting such targets will require a robust and accessible network of highway stations that provides on-route fast-charging to complement home, workplace, and depot charging. Paired with sales and manufacturing incentives such as those included in the Inflation Reduction Act of 2022, convenient access to fast-charging will further encourage EV market development and consumer adoption.
The electric grid will be critical to the rollout of fast-charging. Providing timely and sufficient electric service to energize this highway charging network will require data-driven and cross-sectoral planning. While other studies have investigated state, regional, and systemwide impacts of transportation electrification, electric infrastructure planning and development are driven by demand at specific locations throughout the grid. To that end, this study characterizes site-specific impacts at likely highway charging locations. These results will support utility long-term capital planning, planning for charging deployment by government agencies and private station operators, and thoughtful public policy to not only accommodate but accelerate EV adoption.Conducted in partnership between National Grid and transportation data and analytics leaders CALSTART, RMI, Stable Auto, and Geotab, this study considers an electric highway future in which light-duty vehicles (LDVs) and MHDVs all electrify to meet state policy goals.