Review charger power and grid limits
A battery can help when the charging site has limited grid capacity, expensive peak demand, or variable solar generation. The system must be reviewed against charger count, charger rating, session timing, transformer capacity, grid contract, and expected utilization.
- Number of AC or DC chargers and maximum simultaneous power.
- Expected daily charging sessions, average energy per session, and peak arrival periods.
- Grid capacity, transformer rating, demand charges, export limits, and PV generation if present.
EMS coordination is essential
The EMS should decide when to charge from grid or PV, when to discharge into charging peaks, and how much reserve to keep for site backup or grid constraints. Communication with chargers, meters, PCS, and BMS should be confirmed before quotation.
