Yes. CHAdeMO was the first widely used DC fast-charging standard to support power flowing back out of the car, so the early vehicle-to-grid (V2G) and vehicle-to-home (V2H) projects were built around CHAdeMO cars and CHAdeMO bidirectional chargers. CCS started as a one-way system and gained a two-way path later, through the ISO 15118 standard family. The result is an odd reversal: the oldest DC standard still on the road also has the longest two-way track record.
Key Takeaways
- CHAdeMO supported two-way power flow before CCS offered a bidirectional path.
- Early V2G and V2H projects therefore ran on CHAdeMO cars and chargers.
- The ability still works at home, independent of the thinning public network.
- No adapter bridges CHAdeMO and CCS, for charging or for discharging.
Why CHAdeMO Could Send Power Back Early
Two-way charging needs more than a plug that fits. Car and charger must negotiate discharging as carefully as charging — agreeing limits, watching the battery and stopping safely if anything drifts. CHAdeMO’s control signalling covered discharging early in the standard’s life, so charger makers could build bidirectional units around it while CCS equipment was still charge-only. The family of two-way uses that grew from this — V2L, V2H and V2G — is set out in bidirectional charging explained.
What Early V2G Actually Ran On
- Home V2H units paired with CHAdeMO cars such as the Nissan Leaf, feeding a house during outages or peak-price hours.
- Fleet and workplace trials, where cars sit parked most of the day and can be available to the grid in between.
- Backup demonstrations, using parked cars as an emergency supply for buildings.
In each case the exporting happened through the car’s DC inlet — the same inlet used for rapid charging. The car’s separate AC inlet stayed one-way, which is why a CHAdeMO car’s home charging looks exactly like any other car’s.
CHAdeMO and CCS, Two-Way Compared
| CHAdeMO | CCS | |
|---|---|---|
| Two-way support | Built in early; bidirectional chargers sold for years | Added later, through the ISO 15118 family |
| Public network today | Thinning as sites renew their equipment | The default for new DC installations |
| Home V2H availability | Dedicated CHAdeMO bidirectional units | Arriving model by model, with matched chargers |
Where That Leaves CHAdeMO Owners Now
The ability itself has not gone away. A CHAdeMO car that supports discharge still works with a compatible bidirectional charger, and home V2H does not depend on the public rapid network at all. What has changed is everything around it: public CHAdeMO cables are thinning as sites are renewed, and exporting power to the grid still needs the utility’s agreement wherever you live, because export is approved separately from charging. Whether a specific car can discharge at all is a maker question — see which EVs can do bidirectional charging — and whether the hardware earns its cost is weighed in is bidirectional charging worth it.
One consequence is worth stating plainly: no adapter bridges the CHAdeMO and CCS DC systems, for charging or for discharging — so a CHAdeMO car’s two-way ability stays tied to CHAdeMO bidirectional chargers, and cannot be carried across to CCS equipment. As can you use any EV charging station sets out, connector fit decides what a car can use.
A Note on Today’s Hardware
EVDANCE’s current range is one-way: units such as the EV-RHDC30K-L compact DC fast charger are specified with the connector set for their market and charge only. A bidirectional system remains a separate, matched purchase of car, charger and home equipment. The full product range covers the one-way line.
Frequently Asked Questions
Can a CHAdeMO car power a house?
Yes, with a compatible bidirectional CHAdeMO charger and the home equipment that isolates the house from the grid during an outage. That is vehicle-to-home, installed by a licensed electrician — never feed house circuits through a plug lead or homemade cable.
Can CCS cars do vehicle-to-grid too?
Increasingly, yes, as two-way capability reaches production cars and matched chargers. It is model-specific rather than automatic, so check the car and the charger pairing before assuming a CCS car can discharge.
Why did V2G start with CHAdeMO rather than CCS?
Because the discharge negotiation existed in CHAdeMO equipment years earlier. CCS development prioritised faster one-way charging first and added the two-way path afterwards.
Related Reading
- Bidirectional Charging Explained: V2L, V2H and V2G
- Which EVs Can Do Bidirectional Charging?
- Is Bidirectional Charging Worth It?
- Can You Use Any EV Charging Station?
