Description
The GW15K-ETA-G20 is the 15 kW model in GoodWe's ESA G20 series: 15 kW AC, 30 kW PV, charge 15.0 kW at 20.1 A, off-grid 16.5 kVA continuous and 30 kVA for 10 s.
GoodWe ESA GW15K-ETA-G20 (15 kW three-phase power module)
15 kW Three-Phase ESA G20: 15 kW rated AC on 230/400 V, 3L/N/PE, 21.8 A per phase at 400 V.
30 kW Solar PV Input (200% Oversizing): Four 21 A MPPTs take a 30 kW array on this 15 kW hybrid.
16.5 kW Battery Discharge: 20.1 A charge / 22.1 A discharge into 700-950 V BAT-D-G20 storage.
63 A Internal Bypass: Whole-home passthrough on the 5-20 kW class, switching under 4 ms.
Battery discharge is 16.5 kW at 22.1 A
Charge 15.0 kW at 20.1 A, discharge 16.5 kW at 22.1 A, 700-950 V, nominal 750 V, start-up 720 V. One battery input on LFP BAT-D-G20 modules.
30 kW of PV on four 21 A trackers is 200% oversize
Four MPPTs, one string each, 21 A / 26 A Isc, MPPT 120-950 V, start-up 150 V, max 1000 V. 30 kW is the 200% oversize against this 15 kW AC rating.
Off-grid peak is 30 kVA for 10 s
Off-grid 16.5 kVA continuous, 30 kVA for 10 s. Rated backup 15 kVA. Max efficiency 98.1%, European 97.3%. Cooling is Smart Fan Cooling. Bypass stays 63 A here; the 80 A row starts at GW25K.
ESA Series
15 kW ESA G20 power module, 30 kW of PV
GoodWe's 15 kW ESA G20 power module has 30 kW maximum PV input across four MPPTs. It seats on BAT-D-G20 modules through the documented stacked connector; the IP66 enclosure is 800 × 340 × 270 mm and 34 kg.
Technical data
GoodWe ESA G20 · GW15K-ETA-G20 power module
- Rated 3-Phase Power
- 15 kW
- Maximum PV DC input
- 30 kW
- Internal Grid Bypass
- 63 A
- Off-Grid Continuous
- 16.5 kVA
About these specifications
30 kW maximum PV input and 15 kW rated three-phase AC in the ESA G20 system.
The GW15K-ETA-G20 is the 15 kW three-phase model in the ESA 5–30 kW table. It delivers 15 kW AC, takes 30 kW of PV on four MPPTs, stacks on BAT-D-G20 modules, and holds 16.5 kVA off-grid (30 kVA for 10 s). Internal bypass stays 63 A on this class; 80 A starts at GW25K, not on this model.
Backup switching <4 ms.
Inverter: AC Output & Backup
- Rated / max. power
- 15 kW rated and max (GW15K-ETA-G20). GoodWe ESA G20 series: 5–30 kW
- Rated current at 400 V
- 21.8 A per phase (3L/N/PE, 220/380 V or 230/400 V, 50/60 Hz)
- Max. apparent power from grid (passthrough)
- 43.5 kVA
- Backup nominal apparent power
- 15 kVA
- Backup max. apparent power (off-grid)
- 16.5 kVA continuous (30.0 kVA for 10 s)
- Backup max. current (off-grid)
- 33.4 A
- On/off-grid switching time
- <4 ms
- Power factor / THDi
- 0.8 leading - 0.8 lagging / THDi <3%
PV Input
- Max. PV input power
- 30 kW (200% oversizing vs. 15 kW AC)
- Max. input voltage
- 1000 V (standby above 950 V)
- MPPT operating voltage range
- 120-950 V; start-up 150 V; nominal input 750 V
- Number of MPPTs / strings
- 4 MPPTs, 1 string per MPPT
- Max. MPPT current / short-circuit current
- 21/21/21/21 A / 26 A per MPPT
Battery Interface & Modules
- Battery type / voltage window
- LFP (LiFePO4); 700-950 V in the three-phase system, nominal 750 V, one battery input
- Max. charge / discharge power
- 15.0 kW / 16.5 kW (GW15K-ETA-G20)
- Max. continuous charge / discharge current
- 20.1 A / 22.1 A
- Module options
- GW5.1-BAT-D-G20/G21: 5.12 kWh rated / 5.0 kWh usable; GW8.3-BAT-D-G20/G21: 8.32 / 8.0 kWh; GW6.0-BAT-D-G20: 6.0 / 5.8 kWh; GW9.0-BAT-D-G20: 9.0 / 8.7 kWh; usable-energy test: GW5.1/GW8.3 G20/G21 at 100% DoD, 0.2P, 25±2°C; GW6.0/GW9.0 G20 at 100% DoD, 0.4P, 25±2°C; beginning of life; actual energy varies with use and conditions
- Scalability
- Different BAT-D-G20/G21 module models can be combined in one system, with up to six modules per column and a 5–108 kWh system range. The documented combination of GW5.1/GW8.3 G20 or G21 with GW6.0/GW9.0 G20 disables battery heating. Mixed systems with separate expansion require BMS and DCDC software V06 or above.
- Module cycle life
- 8,000 cycles on GW5.1-BAT-D-G20, GW8.3-BAT-D-G20, GW5.1-BAT-D-G21 and GW8.3-BAT-D-G21; 10,000 cycles on GW6.0-BAT-D-G20 and GW9.0-BAT-D-G20; each under laboratory test conditions
- Module protection & fire safety
- IP66 modules, integrated aerosol fire extinguishing; Heating integrated on GW6.0/GW9.0 modules for charging down to -20 °C; GW5.1/GW8.3 G20 charges from -18 °C, G21 from +2 °C
- Module dimensions / weight
- 800 × 326 × 270 mm per module; 57.5-79 kg depending on module
Efficiency
- Max. efficiency
- 98.1%
- European efficiency
- 97.3%
- Max. battery-to-AC efficiency
- 98.0%
System & Environment
- Ingress protection
- IP66
- Low-temperature operation
- ETA inverter: -35 to +60 °C. Battery charging limits depend on the selected module and heating film. The documented mixed G20/G21 combination disables heating.
- Cooling method
- Smart Fan Cooling
- Integrated protections
- PV string current monitoring, insulation resistance detection, residual current monitoring, PV/battery reverse polarity, anti-islanding, AC over-current/short-circuit/over-voltage, integrated DC switch, Type II DC SPD (Type I+II optional), Type II AC SPD, AFCI optional, remote shutdown
Project fit
Where this model fits.
Scenarios that show which projects the GoodWe ESA GW15K-ETA-G20 (15 kW three-phase power module) belongs in, and the limits behind our engineers' recommendation.
15 kW three-phase column on a 30 kW four-tracker roof
A three-phase home plans a PV array of up to 30 kW and needs 16.5 kVA of continuous off-grid backup.
The GW15K-ETA-G20 takes 30 kW of PV on four 21 A MPPTs, discharges the battery at 16.5 kW, and holds 16.5 kVA off-grid (30 kVA for 10 s) on the 63 A internal bypass.
- PV max 30 kW, 4 MPPTs; battery charge/discharge 15.0/16.5 kW; bypass 63 A; 6 modules per column, 12 per system.
Documents
Product questions
Are the battery base and CT in the standard inverter kit, and are battery modules separate?
Yes. The inverter deliverables include a battery base x 1 and a CT x 1. Battery modules are listed separately under the battery deliverables.
Which BAT-D module has the documented -20°C charging range?
The GW6.0-BAT-D-G20 and GW9.0-BAT-D-G20 have a charging temperature range of -20~55 °C.
What backup load can the GW15K-ETA-G20 design support?
The GW15K-ETA-G20 belongs to the first model group of the BACK-UP port off-grid load capacity table, together with the GW5K-ETA-G20, GW6K-ETA-G20, GW8K-ETA-G20, GW9.999K-ETA-G20, GW10K-ETA-G20, GW12K-ETA-G20 and GW20K-ETA-G20, and the GW5K-BTA-G20 to GW20K-BTA-G20 models. For this group the table gives: rated power of a single inductive load 1.1 kVA single-phase and 3.3 kVA three-phase; total rated power of multiple inductive loads 0.4*Pn/3 single-phase and 0.4*Pn three-phase; capacitive load 0.33*Pn/3 single-phase and 0.33*Pn three-phase; half-wave load 2 kW single-phase, with no value given for three-phase.
Compatibility records
GoodWe GW5.1-BAT-D-G20 (ESA battery module, 5.12 kWh)Item number DLK-GOODWE-GW51BATDG20GoodWe GW5.1-BAT-D-G21 (ESA battery module, 5.12 kWh)Item number DLK-GOODWE-GW51BATDG21GoodWe GW6.0-BAT-D-G20 (ESA battery module, 6.0 kWh)Item number DLK-GOODWE-GW60BATDG20
GoodWe GW8.3-BAT-D-G20 (ESA battery module, 8.32 kWh)Item number DLK-GOODWE-GW83BATDG20GoodWe GW8.3-BAT-D-G21 (ESA battery module, 8.32 kWh)Item number DLK-GOODWE-GW83BATDG21GoodWe GW9.0-BAT-D-G20 (ESA battery module, 9.0 kWh)Item number DLK-GOODWE-GW90BATDG20The GoodWe ESA datasheet lists GW5.1-BAT-D-G20, GW8.3-BAT-D-G20, GW5.1-BAT-D-G21, GW8.3-BAT-D-G21, GW6.0-BAT-D-G20 and GW9.0-BAT-D-G20 modules and prints scalability of 12 pcs (p. 3). The user manual limits one column to six batteries. For capacity expansion, including installations that require a lower stack per column, it refers to a battery expansion kit (printed p. 79; PDF p. 80).