Substation Thermal Loading, Peak Coincidence, and Infrastructure Bottlenecks
The intersection of high electric vehicle penetration and local power distribution exposes critical discrepancies between theoretical dispatch models and operational grid realities. Theoretical frameworks often conceptualize fleet charging as an aggregated, malleable load; however, practical analyses demonstrate that uncoordinated charging habits exacerbate existing evening peak demands. Empirical assessments of hourly demand curves highlight that concurrent residential charging intensifies peak coincidence, driving transmission and distribution networks toward structural capacity thresholds (SSRN, 2025). This aligns with technical investigations of transmission system stress, which confirm that the simultaneous electrification of mobility and domestic heating amplifies line overloading risks and substation thermal strain unless mitigation mechanisms intervene (CPS, 2026). Conversely, modeling passenger vehicle integration within high-renewable grids indicates that infrastructure bottlenecks are not purely an absolute generation deficit but rather a temporal misalignment between peak generation and unmanaged consumer demand (Resources, Conservation and Recycling Advances, 2023). Comparing these perspectives reveals that network spillovers stem primarily from rigid load profiles rather than fleet volume alone. Consequently, bridging the theoretical promise of transport decarbonization with physical asset preservation requires moving beyond passive capacity expansion toward localized demand management, where operational flexibility and tariff-driven incentives directly counteract transformer degradation.