23 CFR § 680.108 - Interoperability of electric vehicle charging infrastructure.

---
identifier: "/us/cfr/t23/s680.108"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "23 CFR § 680.108 - Interoperability of electric vehicle charging infrastructure."
title_number: 23
title_name: "Highways"
section_number: "680.108"
section_name: "Interoperability of electric vehicle charging infrastructure."
chapter_name: "FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "G"
subchapter_name: "ENGINEERING AND TRAFFIC OPERATIONS"
part_number: "680"
part_name: "NATIONAL ELECTRIC VEHICLE INFRASTRUCTURE STANDARDS AND REQUIREMENTS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "23 U.S.C. 109, 23 U.S.C. 315; Pub. L. 117-58, title VIII of division J."
regulatory_source: "88 FR 12752, Feb. 28, 2023, unless otherwise noted."
cfr_part: "680"
---


# 680.108 Interoperability of electric vehicle charging infrastructure.

(a) *Charger-to-EV communication.* Chargers must conform to ISO 15118-3 and must have hardware capable of implementing both ISO 15118-2 and ISO 15118-20. By February 28, 2024, charger software must conform to ISO 15118-2 and be capable of Plug and Charge. Conformance testing for charger software and hardware should follow ISO 15118-4 and ISO 15118-5, respectively.

(b) *Charger-to-Charger-Network Communication.* Chargers must conform to Open Charge Point Protocol (OCPP) 1.6J or higher. By February 28, 2024, chargers must conform to OCPP 2.0.1.

(c) *Charging-Network-to-Charging-Network Communication.* By February 28, 2024, charging networks must be capable of communicating with other charging networks in accordance with Open Charge Point Interface (OCPI) 2.2.1.

(d) *Network switching capability.* Chargers must be designed to securely switch charging network providers without any changes to hardware.