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GW6.5KN-ET vs ESI-6.5K-T1 13 of 24 identical Swap Change inverters

GoodWe GW6.5KN-ET vs Sofar Solar ESI-6.5K-T1

GoodWe GW6.5KN-ET
GoodWe
GW6.5KN-ET
6.5 kW Hybrid
Open inverter page Datasheet PDF
VS
Sofar Solar ESI-6.5K-T1
Sofar Solar
ESI-6.5K-T1
6.5 kW 97.0 % euro Hybrid
Open inverter page Datasheet PDF
The verdict

11 differences, and they point both ways

The largest is max input current per tracker: 4.0 A more headroom. 13 of 24 comparable parameters are identical, with 8 more left out because at least one datasheet does not publish them.

See all 11 differences
How alike are they
13 of 24 comparable
parameters are identical
identical differs not published
01

What actually differs

11 of 24 parameters
Parameter GW6.5KN-ET ESI-6.5K-T1 Difference
Max input current per tracker 16.0 A 20.0 A 4.0 A more headroom
Max PV power 9.70 kW 13.00 kW 3.30 kW apart
DC/AC ratio 1.49 2.00 0.51 more oversizing headroom
Weight 24.0 kg 30.0 kg 6.0 kg lighter
Weight per kW 3.7 kg/kW 4.6 kg/kW 0.9 kg/kW lighter
MPP trackers 2 3 1 tracker more
Max efficiency 98.2 % 98.0 % 0.2 pp more efficient
MPPT voltage range 200-850 V 160-950 V 200-850 V vs 160-950 V
Start voltage 180 V 200 V 20 V earlier start
Battery voltage 180~600 350-435 Vdc 180~600 vs 350-435 Vdc
Dimensions 516x415x180 mm 440x708x170 mm 516x415x180 mm vs 440x708x170 mm
02

Full specification

Parameter GW6.5KN-ET ESI-6.5K-T1 Difference
AC output
Rated AC power 6.50 kW 6.50 kW Same
Max AC power 7.15 kW 7.15 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 10.8 A 10.9 A Effectively the same
PV input
Max PV power 9.70 kW 13.00 kW 3.30 kW apart
DC/AC ratio 1.49 2.00 +0.51 for ESI-6.5K-T1
Max DC voltage 1000 V 1000 V Same
MPPT voltage range 200-850 V 160-950 V 200-850 V vs 160-950 V
Start voltage 180 V 200 V -20 V for GW6.5KN-ET
MPP trackers 2 3 +1 trackers for ESI-6.5K-T1
Strings per tracker 1 1 Same
Max input current per tracker 16.0 A 20.0 A +4.0 A for ESI-6.5K-T1
Efficiency
European efficiency - 97.0 % Not published by GoodWe
Max efficiency 98.2 % 98.0 % +0.2 pp for GW6.5KN-ET
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input Yes Yes Same
Battery voltage 180~600 350-435 Vdc 180~600 vs 350-435 Vdc
Max charge current 25 A 25 A Same
Backup power - - Neither datasheet publishes this
Physical
Weight 24.0 kg 30.0 kg -6.0 kg for GW6.5KN-ET
Weight per kW 3.7 kg/kW 4.6 kg/kW -0.9 kg/kW for GW6.5KN-ET
Dimensions 516x415x180 mm 440x708x170 mm 516x415x180 mm vs 440x708x170 mm
Ingress protection IP66 IP66 Same
Cooling natural natural Same
Noise - - Neither datasheet publishes this
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes - Not published by Sofar Solar
Ethernet - - Neither datasheet publishes this
Arc fault protection - Yes Not published by GoodWe
Integrated DC switch Yes Yes Same
Warranty
Warranty - - Neither datasheet publishes this
03

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04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.