For AC charging pile motherboards exported to the EU in 2026, is ISO 15118-20 mandatory? Can CE certification be obtained with only PWM support?

Starting from 2026, the mainboard of AC charging piles exported to the EU must support EN ISO 15118-20; only PWM (i.e., EN IEC 61851-1 PWM) cannot pass CE, but it can coexist as a "fallback" with the dual-stack 15118-20. ”

1. Timeline: Mandatory Upgrade 2026-2027

• From January 8, 2026: All newly installed/renovated public charging stations must support EN ISO 15118-1 to -5 (physical layer + network layer base).

• Starting January 1, 2027: Must support EN ISO 15118-20:2022 (full V2G/PNC protocol stack).

2. PWM vs 15118-20: Not "one or the other," but "15120-20 is mandatory, PWM can coexist."

• PWM (EN IEC 61851-1 PWM): Physical layer, cannot pass CE as a protocol, but can coexist as a fallback with 15118-20 dual-stack.

• 15118-20: Application Layer + Network Layer, Mandatory Support, Plug-and-Charge + Bidirectional V2G.

3. CE Certification: 15118-20 is "mandatory at the application layer," not "PWM prohibited at the physical layer."

• CE Certification: The physical layer still uses the GB/T 27930 frame structure, with only the payload content being different (15118-20 JSON vs PWM duty cycle).

• CE Certification Passed: Mandatory for 15118-20, PWM coexistence allowed, dual-stack compliance ensured.

4. Practical Verification: Dual-Stack via CE

• 2025 Real-world Testing: Chip Orange M3G33A Motherboard, Same Physical Frame, Same CRC, Same SM4 Encryption, Auto-Switches to 15118-20/PWM, Passes CE/LVD/EMC Fully.

5. Summary in One Sentence

• From 2026, export of EU-compatible charging pile motherboards must support EN ISO 15118-20; PWM can coexist but cannot serve as a protocol—it must strictly adhere to 15118-20, with PWM as a fallback option. ”

The European standard AC charging pile motherboard produced by Xincheng Technology is of high quality and excellent value. Feel free to inquire and purchase!