CharIN: Bidirectional CCS charging by 2025


The CharIN initiative, formed to develop and establish CCS as a fast-charging standard, has published two new papers. These illustrate CharIN’s position on network integration and bi-directional charging (V2G), as well as giving an outlook on future developments.

The initiative has focused on spreading CCS (short for Combined Charging System) worldwide and increasing the performance of the standard. Nowadays charging capacities of up to 350 kW and more can be achieved. Now CharIN is focussing on grid integration, something the rivalling CHAdeMO standard has been looking into for some time already.

CharIN has presented a roadmap for CCS just now, showing the most important steps towards vehicle-to-network functionality (V2G) based on ISO/IEC 15118. These are the steps outlined so far:

Today: Grid-compliant loading
Until 2020: Level 1 – V1G Controlled charging
Until 2020: Level 2 – V1G/H Cooperative charging
Until 2025: Level 3 – V2H Bidirectional charging
Around 2025: Level 4 – V2G Aggregated (bidirectional) charging

The Charging Initiative is a registered association with more than 150 members. For those not versed in the different charging standards: While in Europe, North America and some other countries CCS has been taken on as a fast-charging standard, Japan relies on CHAdeMO and China has its own GB/T standard. Moreover, China and Japan are currently looking into ultra-fast charging at 900 kW under the working title ChaoJi. Tesla has opted for its very own standard when they installed their Superchargers.,, (position papers), (grid integration, PDF)


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