| Price | $4,199 | $6,250 |
| Inverter Type | hybrid | hybrid |
| Input Data (PV) | ||
| Max PV Input Power | 21 kW | 19.5 kW |
| MPPT Voltage Range | 120-440 V | 150-425 V |
| Max PV Input Voltage | 600 V | 500 V |
| # of MPPTs | 3 | 3 |
| Inputs per MPPT | 2 / 2 / 1 | 2 / 2 / 2 |
| Max Usable Input Current | 26 A / 26 A / 15 A | 26 A / 26 A / 26 A |
| Max Short Circuit Input Current | 31 A / 31 A / 19 A | 44 A / 44 A / 44 A |
| AC Couple | No (only with gridboss) | Yes |
| Max AC Couple Input Power | 19.2 kW | |
| Output Data (AC) | ||
| Nominal Output Power | 16 kW (with PV) 12 kW (battery only) | 15 kW (with PV) 12 kW (battery only) |
| Peak Surge | 24 kW | 24 kW |
| Locked Rotor Amps (LRA) | 195 A | |
| Output Voltage | 120/240V | 120/240V, 120/208V, 220V |
| Grid Frequency | 50/60Hz | 50/60Hz |
| Max Output Current | 66.7 A | 62.5 A |
| Max Grid Passthrough (Bypass) | 90 A | 200 A |
| Battery | ||
| Battery Nominal Voltage | 48 V | 48 V |
| Battery Type | Lead-acid / Lithium | Lead-acid / Lithium |
| Max Battery Charge / Discharge | 250 A / 250 A | 275 A / 275 A |
| General Info | ||
| Idle Consumption | 65 W | 90 W |
| Parallel Support | Up to 16 units | Up to 12 units |
| Monitoring | App/Web (LCD optional) | App/Web/LCD |
| Outdoor Rating | NEMA 4X | IP65 / NEMA 3R |
| Dimensions (H×W×D) | 30.4 × 22.3 × 11.2 in | 31.8 × 19.4 × 12 |
| Weight | 121 lbs | 135 lbs |
| Noise Level | <50 dB @ 3 ft | <30 dB @ 77°F |
| Warranty | 10 years | 10 years |