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When the EU Delegated Regulation (EU) 2025/656 explicitly required all newly built public charging stations to support the EN ISO 15118 series standards from January 8, 2026, the entire charging station industry realized clearly that the V2G (vehicle to grid) era of AC charging stations had arrived. In the CCS (Combined Charging System) standard system, AC PLC (Power Line Communication) technology is becoming the core technology to activate this function and promote V2G from testing to large-scale market.
1、 Regulatory constraints: AC PLC becomes a ‘must-have configuration’ for the implementation of PNC and V2G functions
The EU Regulation 2025/656 released this time is not a simple technological update, but a systematic restructuring of new energy infrastructure. On the basis of revising the AFIR framework, this regulation specifies the EN ISO 15118 series standards as mandatory requirements for public and private charging stations, covering AC/DC charging scenarios for light and heavy vehicles. Among them, the ISO 15118-3 standard directly defines the technical specifications for the physical layer and data link layer – which happen to be the core of implementing AC PLC communication technology.
For charging station companies, this means that AC PLC is no longer an optional “high-end configuration”. The dual time nodes set by regulations constitute a clear market access timetable:
- ✔ Starting from January 8, 2026, newly built public charging stations must fully support the full range of standards from 15118-1 to 15118-5;
- ✔ Starting from January 1, 2027, newly built charging stations in both public and private sectors must be compatible with version 15118-20:2022.
AC PLC is the only mature communication solution that meets these standards. The European Association of Automobile Manufacturers (ACEA) has already made it clear that as the mainstream charging interface in Europe, the V2G implementation of the CCS standard’s AC charging function must rely on the support of PLC technology.
According to estimates, there are over 2 million public AC charging piles in Europe. According to regulatory requirements, the market size of existing renovated piles alone will exceed 10 billion euros between 2026 and 2030. The penetration rate of AC PLCs in the new pile market is expected to jump from less than 15% in 2025 to 100% in 2027.
Technical support: Why is AC PLC the optimal solution for CCS-V2G?
In the AC charging scenario of CCS standards, AC PLC technology achieves bidirectional communication between vehicles and piles through power lines, and its unique advantages become the key support for the implementation of V2G functions. As a communication technology specified in the ISO 15118 standard, AC PLC is based on the HomePlug Green PHY protocol and can achieve high-speed data transmission of up to 1Gbps. It can read key parameters such as vehicle SOC (remaining charge) and battery health status in real time, providing accurate data foundation for V2G scheduling.
2、 Compared with traditional communication methods, the technological superiority of AC PLC is reflected in three core dimensions:
When AC PLC is deeply integrated with CCS standards, AC charging stations can be upgraded from simple “power supply equipment” to “energy interaction nodes”, achieving full process intelligence of charging, discharging, and scheduling.
3、 The three major growth poles of AC PLC charging stations
Under the dual effects of regulatory dividends and technological maturity, the AC PLC application market is forming three clear growth poles, demonstrating strong commercial potential:
1. The ‘mandatory growth’ of the European compliance market
As the birthplace of policies, the European market will be the first to release rigid demand. Data shows that the annual increase in AC charging stations in Germany, France, and Norway alone exceeds 500000 units. Top enterprises have taken the lead in layout, and ABB’s CCS compatible AC PLC charging piles have passed the ISO 15118 full series certification.
2. Value Growth in Business Model Innovation
AC PLC technology has turned the commercial value of V2G from theory to reality. In Europe, the aggregation platform uses AC PLC to achieve cluster scheduling of charging piles, increasing the profit rate of car owners participating in grid auxiliary services to 34%.
3. The ‘upgrade growth’ of technological iteration
With the advancement of ISO 15118-20 standard, AC PLC technology is evolving towards higher performance. MIDA’s AC PLC products can compress transmission delay to within 10 milliseconds and enable charging stations to support finer power regulation.
4、 Seize the ‘golden window period’ of AC PLC
From the mandatory requirements of EU regulations to the spontaneous growth of market demand, from the clear implementation of technical standards to the gradual maturity of business models, the V2G era of AC charging piles is no longer far away. For charging station companies, 2025-2026 is the golden window period for laying out AC PLC technology – both to complete the compliance certification of ISO 15118 standard and seize the opportunity in the European market; Shenzhen MIDA will provide authoritative technical and product support for export pile enterprises. And fully assist export charging pile enterprises in exploring the business model of “pile vehicle network” collaboration, and tap into the value-added potential of V2G.
Post time: Sep-20-2026
