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
620 W, 156 cell double glass monocrystalline module, 1500V max system Vdc
The figures below refer to GSD7S78T-620WT. Use the configuration table for other variants.
- Nameplate DC power
- 620 W DC
- Maximum-power voltage (DC)
- 47.51 V DC
- PTC power (DC)
- 589.7 W DC
- Technology
- Mono-c-Si
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 | Nameplate DC power | PTC (DC) | Observation | Compare |
|---|---|---|---|---|
| GSD7S78T-620WTPV Module-Full row 4657 | 620 W DC | 589.7 W DC | Listed in CEC |
Source specifications and conditions
Additional source information for GSD7S78T-620WT. Qualifiers, reported control modes and required devices are retained as written. Power-control listings do not establish arbitrary battery/inverter pairings.
- NOCT (°C)
- 43.1
- Module family
- Monocrystalline
- Cells in series
- 78
- CEC listing date
- 2024-03-21
- Module area (m²)
- 2.77
- PTC rating (W DC)
- 589.7
- Source last update
- 2026-03-11
- Safety certification
- UL 61730
- Parallel cell strings
- 2
- Building-integrated PV
- N
- Maximum-power current Imp (A)
- 13.05
- Short-circuit current Isc (A)
- 13.69
- Open-circuit voltage Voc (V DC)
- 56.46
- Maximum-power voltage Vmp (V DC)
- 47.51
- Pmax temperature coefficient (%/°C)
- -0.2928
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 CECGSD7S78T-620WT
Archived CEC source