Deye SUN-10…25K-SG01HP3-EU Hybrid Inverter

Above roughly 20–30 kW of continuous power, 51.2 V architectures begin to punish installers: DC currents climb, mandating 35–50 mm² runs, heavy combiner boxes, and measurable I²R losses on every meter of cable. The 200–850+ V HV bus inverts that equation. A 25 kW charge/discharge profile on HV uses dramatically slimmer conductors and fewer parallel strings, directly cutting Balance of System (BOS) cost before a single kWh is stored.

Battery integration follows strict HV rules. Modules such as Heckman RHFP05100A (20–65 kWh scalable racks) or Sunwoda OASIS 60 kWh cabinets are wired in series—not parallel stacks of 51.2 V blocks. Every module must be pre-balanced to an identical State of Charge (SOC) before stringing; otherwise the Master BMS will lock out the string. CAN communication from the battery Master terminates at the inverter BMS port; grid-side metering typically uses CHINT DTSU 666 on short runs, or Eastron SDM Modbus V2 via RS485/PLC when the measurement point exceeds 30 m.

For Georgian B2B operators facing the 0.35 ₾/kWh tariff, this platform supports peak shaving, time-of-use arbitrage, and unbalanced three-phase loading across commercial feeders. Up to 10 inverters can be paralleled on the SG01HP3 architecture (Master/Slave CAN), scaling toward 250 kW while preserving a single battery communication hierarchy. AC Coupling via the GEN port remains available for retrofit sites upgrading legacy On-Grid PV without ripping existing string inverters.