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
ESS with PCS functionality
The figures below refer to GWCS5.0-US20 {5kW, 12.8kWh}. Use the configuration table for other variants.
- Controlled apparent power
- 5 kVA
- Operating voltage
- 240 V
- PCS functionality
- ESS
- Technology
- Not reported
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 | Controlled apparent power | Voltage / display | Observation | Compare |
|---|---|---|---|---|
| GWCS5.0-US20 {5kW, 12.8kWh}PCS Data for Inverter and ESS row 770 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 16kWh}PCS Data for Inverter and ESS row 771 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 19.2kWh}PCS Data for Inverter and ESS row 772 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 25.6kWh}PCS Data for Inverter and ESS row 773 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 28.8kWh}PCS Data for Inverter and ESS row 774 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 32kWh}PCS Data for Inverter and ESS row 775 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 38.4kWh}PCS Data for Inverter and ESS row 776 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 48kWh}PCS Data for Inverter and ESS row 777 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 51.2kWh}PCS Data for Inverter and ESS row 778 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 57.6kWh}PCS Data for Inverter and ESS row 779 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 64kWh}PCS Data for Inverter and ESS row 780 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 76.8kWh}PCS Data for Inverter and ESS row 781 | 5 kVA | 240 V | Listed in CEC | |
| GWCS5.0-US20 {5kW, 9.6kWh}PCS Data for Inverter and ESS row 782 | 5 kVA | 240 V | Listed in CEC |
Source specifications and conditions
Additional source information for GWCS5.0-US20 {5kW, 12.8kWh}. Qualifiers, reported control modes and required devices are retained as written. Power-control listings do not establish arbitrary battery/inverter pairings.
- Equipment type
- ESS
- CEC listing date
- 2023-02-13
- Export-only mode
- N
- Import-only mode
- Y
- No-exchange mode
- Y
- Unrestricted mode
- N
- Phase configuration
- Single
- PCS CRD document date
- 2022-07-19
- PCS CRD issuing entity
- CSA Group
- Additional required devices
- Either a meter (GMK120, GMK121, GMK140, or GMK141), or an automatic backup device (ABD200-40-US10, ABD200-63-US10 ABD100-40-US10, or ABD100-63-US10).
- Output voltage as reported (V)
- 240
- Export-only response time (seconds)
- N/A
- Import-only response time (seconds)
- 15.256
- No-exchange response time (seconds)
- 3.731
- Current measurement reference points
- ESS & External CT (from the meter or the automatic backup device)
- Unrestricted response time (seconds)
- N/A
- Maximum apparent power as reported (kVA)
- 5
- Maximum continuous current as reported (A)
- 20.8
Use the source row references above to inspect the conditions for each other configuration.
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 CECGWCS5.0-US20 {5kW, 9.6kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 76.8kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 64kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 57.6kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 51.2kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 48kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 38.4kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 32kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 28.8kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 25.6kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 19.2kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 16kWh}
Archived CEC source - Sep 21, 2026 · California Energy CommissionFirst observed: Listed in CECGWCS5.0-US20 {5kW, 12.8kWh}
Archived CEC source