Maturity status | Beta |
This article explains what §14a EnWG compliance is, how the gridX EMS implements it for EV charging, and how to configure it in the XENON Dashboard.
What is §14a EnWG compliance?
The EnWG §14a regulation in Germany requires private charging locations to offer power flexibility to the Distribution System Operator (DSO) for grid stabilization measures. In return, the DSO provides reduced grid fees.
When a §14a signal is active, the EMS curtails all EV charging stations (EVCS) at the site to keep their combined consumption within the DSO-defined limit.
How does the §14a algorithm work?
The §14a curtailment runs after regular load management has already distributed power:
Load management distributes available power across all EVCS as normal
If a §14a limit is present and the combined consumption of all §14a-relevant assets exceeds it, the EMS curtails all EVCS further to meet the limit
Only EVCS consumption is considered when evaluating the §14a limit — other site loads are not included
What are the hardware requirements for §14a EnWG compliance?
A control unit (Steuerbox) must be installed at the site to receive and transfer DSO signals to the EMS.
How do I configure §14a EnWG compliance?
Step 1 — Enable §14a for the site:
In XENON, go to the System Details tab for the site
Enable the §14a EnWG toggle
Step 2 — Mark at least one EVCS as §14a-relevant:
In XENON, go to the Assets tab
Select an EVCS and enable the §14a Relevant toggle
Note: All EVCSs at the site are curtailed when a §14a signal is active, regardless of how many are marked as §14a-relevant. Marking at least one is required to activate signal reception.