Full Title: Interconnection Guidance for Residential Bidirectional EV Charging
Author(s): Brittany Blair and Garrett Fitzgerald
Publisher(s): Smart Electric Power Alliance
Publication Date: September 17, 2025
Full Text: Download Resource
Description (excerpt):
Electric vehicles (EVs) equipped with bidirectional charging can move beyond their role as energy consumers to serve as higher value dispatchable storage resources, delivering distributed storage, resilience, and other grid services. As more automotive manufacturers introduce bidirectional capability to their products, customer interest and adoption is likely to grow, particularly for home backup and bill savings use cases. Capturing this potential will require clear regulatory definitions, updated interconnection pathways, and proactive utility leadership.
SEPA partnered with ten utilities to assess challenges and best practices for interconnecting bidirectional charging systems, also known as vehicle-to-everything. This report summarizes key insights to guide regulators as adoption grows, outlining near-term actions commissions and utilities can take to prepare. These include clarifying definitions, updating interconnection rules to address bidirectional capabilities, and establishing fair compensation for grid services, ensuring utilities, installers, and customers are aligned on how these systems interact with the grid.