A registry listing is a starting point. CEC inclusion is not nationwide installation approval. Confirm the exact model and configuration with your utility and local authority.
How to use this dataEquipment overview
4400 kW, 645 Vac Hybrid Grid Support Utility Interactive Inverter connects to the grid via a 4400 kVA medium voltage transformer. (Made up of four SG1100UD-US installed together, each rated max output power = 1103).
The figures below refer to SG4400UD-MV-US {645V}. Use the configuration table for other variants.
- Continuous AC output
- 1,103 kW
- Nominal AC voltage
- 645 V AC
- CEC weighted efficiency
- 97.5 %
- Technology
- Hybrid inverter
- UL 1741 SB in CEC source
- Reported
- CEC source lists
- Solar + Battery
Specifications are reported in the CEC source; SolarApprovals has not independently tested this equipment. A missing value does not mean zero or a failed certification.
Exact configurations
CEC annotations in braces identify the listed configuration and are not part of the manufacturer’s model number. Variants share this canonical page.
| CEC model / configuration | Continuous AC output | Voltage / display | Observation | Compare |
|---|---|---|---|---|
| SG4400UD-MV-US {645V}Solar_Inverters row 2034 · Battery_Inverters row 1063 | 1,103 kW | 645 V AC | Listed in CEC |
Source specifications and conditions
Additional source information for SG4400UD-MV-US {645V}. Qualifiers, reported control modes and required devices are retained as written. Power-control listings do not establish arbitrary battery/inverter pairings.
- Source notes
- Submitted performance data is the same as SG1100UD-US. Efficiency data inclusive of transformer effect based on Medium-Voltage Transformers DOE Table.
- Built-in meter
- N
- Source last update
- 2024-04-11
- Firmware version(s) tested
- No Information Submitted
- UL 1741 SA certificate date
- No Information Submitted
- UL 1741 SB certificate date
- [6/15/2023]
- CSIP conformance as reported
- Y*
- UL 1741 SA certifying entity
- No Information Submitted
- UL 1741 SB certifying entity
- SGS
- CEC grid-support listing date
- 2024-04-02
Documented compatibility
No specific equipment pairing has been verified for this model.
Shared voltage, a hybrid designation, or the same manufacturer does not establish compatibility. Check the manufacturer’s installation documents for exact model combinations, firmware, and operating conditions.
Registry observation history
Dates show when SolarApprovals observed a status. The first observation is not the original CEC listing date. History begins with our first import.
- Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECSG4400UD-MV-US {645V}
Archived CEC source