Description
The GW125K-ETR-G10 is rated 125 kW AC with 250 kW maximum PV input on ten MPPTs. Backup requires an STS Box or STS Cabinet.
GoodWe GW125K-ETR-G10 (125 kW three-phase hybrid inverter)
125 kW continuous output (137.5 kVA max): Rated 125.0 kW / 125.0 kVA on-grid, with 137.5 kW / 137.5 kVA maximum for this 125 kW model.
250 kW maximum PV input: Ten MPPTs at 42 A each and two strings per MPPT on the GW125K-ETR-G10.
Battery interface for large commercial storage: One 700 to 1000 V LFP port at 180.0 A, moving 137.5 kW charge and discharge. The Battery Compatibility Overview names GW261.2-BAT-LCD-G10 for ETR 80–125 kW.
STS backup path: An STS Box or STS Cabinet on the backup path holds 125.0 kVA nominal and 137.5 kVA max, with switchover under 10 ms on one unit.
Fits 250 kW across ten MPPT channels
Ten MPPT trackers handle 42 A each with 2 strings per tracker. Operating voltage spans 160 to 1000 V with a 1100 V maximum input rating. Between 1000 V and 1100 V the inverter stands by and returns to work at 1000 V.
Takes 137.5 kW on a 700 to 1000 V battery bus
The battery port operates from 700 to 1000 V with a 750 V nominal rating and 700 V start-up. Continuous charge and discharge current reaches 180.0 A. The Battery Compatibility Overview names GW261.2-BAT-LCD-G10 for ETR 80–125 kW; PV string Voc must sit above 813 V with that cabinet.
Holds 125 kVA backup with an external STS
Backup power provides 125.0 kVA nominal and 137.5 kVA max with an STS Box or STS Cabinet on the path. Peak without grid is 110% continuous, 120% for 60 s, 150% for 10 s. Switchover time is under 10 ms on one unit.
ETR Series
Runs 137.5 kW on high-voltage commercial storage.
The high-voltage battery port is rated 137.5 kW charge and discharge at 180 A. With an STS Box or STS Cabinet, nominal backup is 125 kVA. The IP66 wall-mounted unit weighs 98 kg; intelligent air cooling, 60 dB noise emission and -35 to +60 °C operation are datasheet values.
Technical data
GoodWe ETR · 125 kW
- Rated 125.0 kW / 125.0 kVA on-grid; max 137.5 kW / 137.5 kVA for this 125 kW model.
- 125 kW / 137.5 kVA
- Ten MPPT channels take 250 kW of PV at 42 A each, two strings per tracker.
- 250 kW / 10 MPPT
- One LFP port, 700 to 1000 V, 180.0 A continuous, 137.5 kW charge and discharge.
- 137.5 kW / 180 A
- Backup 125.0 kVA nominal / 137.5 kVA max with an STS Box or STS Cabinet. Switch under 10 ms on one unit.
- 125 kVA + STS
About these specifications
125 kW continuous AC throughput with high-voltage multi-MPPT solar intake.
The GW125K-ETR-G10 delivers 125 kW continuous AC power (137.5 kVA max) for commercial and industrial plants.
Ten MPPT channels take 250 kW of solar at 42 A each, and one 700 to 1000 V battery port moves 137.5 kW at 180.0 A.
Backup needs an STS Box or STS Cabinet. Peak without grid is 110% continuous, 120% for 60 s, 150% for 10 s. Efficiency is 98.1% max, 97.7% European, 98.2% battery-to-AC.
AC Output (On-Grid)
- Rated / max. power
- 125.0 kW rated / 137.5 kW max (GW125K-ETR-G10)
- Rated / max. apparent power
- 125.0 kVA / 137.5 kVA
- Rated / max. current at 400 V
- 180.5 A / 198.5 A
- Nominal voltage
- 220/380, 230/400, 240/415 V, 3L/N/PE, 50/60 Hz
- Power factor / THDi
- ~1, adjustable 0.8 leading - 0.8 lagging / THDi <3%
PV Input
- Max. PV input power
- 250 kW maximum PV input (GW125K-ETR-G10)
- Max. input voltage
- 1100 V (standby above 1000 V)
- MPPT operating voltage range
- 160–1000 V; start-up 200 V; nominal 620 V
- MPPTs / strings
- 10 MPPTs, 2 strings per MPPT
- Max. MPPT current / short-circuit current
- 42 A / 55 A per MPPT
Battery Interface
- Battery type / voltage window
- LFP; 700–1000 V, nominal 750 V, start-up 700 V, one battery connection port
- Max. charge / discharge power
- 137.5 kW
- Max. continuous charge / discharge current
- 180.0 A
- Compatible battery system
- GoodWe battery compatibility overview, ETR 80–125 kW: GW261.2-BAT-LCD-G10; The PV string open-circuit voltage must exceed 813 V with that cabinet.
Backup (with STS)
- Nominal / max. backup apparent power
- 125.0 kVA / 137.5 kVA, an STS Box or STS Cabinet is required for the backup side
- Peak output power without grid
- 110% continuous; 120% for 60 s; 150% for 10 s
- On/off-grid switching time
- <10 ms (one unit)
Efficiency & General
- Max. / European efficiency
- 98.1% / 97.7%
- Max. battery-to-AC efficiency
- 98.2%
- Enclosure / environment
- IP66, -35 to +60 °C, 0-100% RH, max. 4,000 m, intelligent air cooling, noise 60 dB
- Dimensions / weight / mounting
- 995 × 758 × 358 mm / 98 kg / wall-mounted
- Communication
- RS485, Wi-Fi, LAN, Bluetooth, 4G; Modbus TCP (SunSpec compatible); CAN to BMS; LED + optional LCD + app
- Integrated protections
- PV string current monitoring, internal humidity monitoring, insulation detection, RCM, reverse-polarity (PV and battery), anti-islanding, AC over-current/short-circuit/over-voltage, DC switch, remote shutdown, Type II DC SPD (Type I+II optional), Type II AC SPD; AFCI/EPO/rapid shutdown optional
- Inverter package
- Includes GM330 meter × 1, smart dongle × 1, 10 m meter cable, 5 m parallel cable, PV and battery connectors
Project fit
Where this model fits.
Scenarios that show which projects the GoodWe GW125K-ETR-G10 (125 kW three-phase hybrid inverter) belongs in, and the limits behind our engineers' recommendation.
250 kW of rooftop PV on one 125 kW wall unit
A commercial rooftop or yard array that needs 250 kW of PV intake on a single 125 kW three-phase hybrid, without splitting strings across several inverters.
Ten MPPT channels take 250 kW of solar at 42 A each, two strings per tracker, into one wall-mounted GW125K-ETR-G10.
The PV window is 160 to 1000 V operating, 200 V start-up, 620 V nominal, 1100 V max. From 1000 V to 1100 V the inverter stands by and returns to work at 1000 V.
- PV: 250 kW max input, 10 MPPTs, 2 strings each, 42 A / 55 A per tracker
- Voltage: 160 to 1000 V operating, 1100 V max, standby from 1000 to 1100 V
- Physical: IP66 wall mount, 995 × 758 × 358 mm, 98 kg, 60 dB, -35 to +60 °C
700 to 1000 V storage on one 180 A port
A C&I plant adding LFP storage on the hybrid DC bus for self-consumption and peak shaving, with backup available once an STS Box or STS Cabinet is on the path.
One LFP port, 700 to 1000 V, 750 V nominal, 700 V start-up, 180.0 A, 137.5 kW charge and discharge. The Battery Compatibility Overview names GW261.2-BAT-LCD-G10 for ETR 80–125 kW; PV string Voc must exceed 813 V with that cabinet.
Backup is 125.0 kVA nominal / 137.5 kVA max only with an STS Box or STS Cabinet. Peak without grid is 110% continuous, 120% for 60 s, 150% for 10 s. Switchover is under 10 ms on one unit.
- Battery: one port, 700 to 1000 V, 180.0 A, 137.5 kW, pairing GW261.2-BAT-LCD-G10, Voc above 813 V
- Backup: STS Box or STS Cabinet required, 125.0 / 137.5 kVA, under 10 ms on one unit
- The <10 ms on/off-grid switch figure applies to one unit; backup needs an STS Box or STS Cabinet.
Documents
Product questions
Which BAT-C cabinet does the Battery Compatibility Overview list for the ETR, and how is GW208.9-BAT-LCD-G10 documented?
The compatibility overview lists the GW208.9-BAT-LCD-G10 battery system for the ETR. It is documented as purchased from GoodWe, and the battery system supports a maximum of 4 clusters in parallel.
Is an external STS needed for the ETR backup path?
The inverter can only use the BACK-UP function when paired with STS.
Can PV strings operate in the 1000–1100 V band?
For GW80K-ETR-G10/GW99.99K-ETR-G10/GW100K-ETR-G10/GW110K-ETR-G10/GW124.99K-ETR-G10/GW125K-ETR-G10, when the input voltage ranges from 1000V to 1100V, the inverter will enter the standby mode, and the voltage returns to 1000V to enter the normal operation state.
Compatibility records
GoodWe GW208.9-BAT-LCD-G10Item number DLK-GOODWE-GW2089BATLCDG10GoodWe GW261.2-BAT-LCD-G10Item number DLK-GOODWE-GW2612BATLCDG10The GoodWe ETR 50–125 kW user manual (pp. 24–25) lists GW125K-ETR-G10 with GW208.9-BAT-LCD-G10 in its single-unit system table; pp. 26–27 repeat the pair for parallel systems, which require SEC3000C main program V7.8.19 or later. GoodWe's Battery Compatibility Overview (p. 6) does not name GW208.9-BAT-LCD-G10, so the manual's system table is not a complete warranty approval.
GoodWe's Battery Compatibility Overview (p. 6) lists GW261.2-BAT-LCD-G10 in its ETR 80–125 kW column, and the GoodWe ETR 80–125 kW datasheet (EMEA, p. 2) names GW125K-ETR-G10 in that series. The GoodWe ETR 50–125 kW user manual (pp. 24–27) lists both models in its single-unit and parallel system tables; parallel systems require SEC3000C main program V7.8.19 or later. The datasheet (p. 3, footnote 4) requires a PV-string open-circuit input voltage above 813 V when this battery is connected.