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ESI-6.5K-T1 vs GW6.5KN-ET (ET PLUS+ 16A Series) 14 of 25 identical Swap Change inverters

Sofar Solar ESI-6.5K-T1 vs GoodWe GW6.5KN-ET (ET PLUS+ 16A Series)

Sofar Solar ESI-6.5K-T1
Sofar Solar
ESI-6.5K-T1
6.5 kW 97.0 % euro Hybrid
Open inverter page Datasheet PDF
VS
GoodWe GW6.5KN-ET (ET PLUS+ 16A Series)
GoodWe
GW6.5KN-ET (ET PLUS+ 16A Series)
6.5 kW 97.2 % 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. 14 of 25 comparable parameters are identical, with 7 more left out because at least one datasheet does not publish them.

See all 11 differences
How alike are they
14 of 25 comparable
parameters are identical
identical differs not published
01

What actually differs

11 of 25 parameters
Parameter ESI-6.5K-T1 GW6.5KN-ET (ET PLUS+ 16A Series) Difference
Max input current per tracker 20.0 A 16.0 A 4.0 A more headroom
Max PV power 13.00 kW 9.70 kW 3.30 kW apart
DC/AC ratio 2.00 1.49 0.51 more oversizing headroom
Weight 30.0 kg 24.0 kg 6.0 kg lighter
Weight per kW 4.6 kg/kW 3.7 kg/kW 0.9 kg/kW lighter
European efficiency 97.0 % 97.2 % 0.2 pp more efficient
MPP trackers 3 2 1 tracker more
MPPT voltage range 160-950 V 200-850 V 160-950 V vs 200-850 V
Start voltage 200 V 180 V 20 V earlier start
Battery voltage 350-435 Vdc 180 ~ 600 350-435 Vdc vs 180 ~ 600
Dimensions 440x708x170 mm 516x415x180 mm 440x708x170 mm vs 516x415x180 mm
02

Full specification

Parameter ESI-6.5K-T1 GW6.5KN-ET (ET PLUS+ 16A Series) 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 10.9 A 10.8 A Effectively the same
PV input
Max PV power 13.00 kW 9.70 kW 3.30 kW apart
DC/AC ratio 2.00 1.49 +0.51 for ESI-6.5K-T1
Max DC voltage 1000 V 1000 V Same
MPPT voltage range 160-950 V 200-850 V 160-950 V vs 200-850 V
Start voltage 200 V 180 V -20 V for GW6.5KN-ET (ET PLUS+ 16A Series)
MPP trackers 3 2 +1 trackers for ESI-6.5K-T1
Strings per tracker 1 1 Same
Max input current per tracker 20.0 A 16.0 A +4.0 A for ESI-6.5K-T1
Efficiency
European efficiency 97.0 % 97.2 % +0.2 pp for GW6.5KN-ET (ET PLUS+ 16A Series)
Max efficiency 98.0 % 98.0 % Same
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input Yes Yes Same
Battery voltage 350-435 Vdc 180 ~ 600 350-435 Vdc vs 180 ~ 600
Max charge current 25 A 25 A Same
Backup power - 10.0 kW Not published by Sofar Solar
Physical
Weight 30.0 kg 24.0 kg -6.0 kg for GW6.5KN-ET (ET PLUS+ 16A Series)
Weight per kW 4.6 kg/kW 3.7 kg/kW -0.9 kg/kW for GW6.5KN-ET (ET PLUS+ 16A Series)
Dimensions 440x708x170 mm 516x415x180 mm 440x708x170 mm vs 516x415x180 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 - Yes Not published by Sofar Solar
Arc fault protection Yes - Not published by GoodWe
Integrated DC switch Yes Yes Same
Warranty
Warranty - - Neither datasheet publishes this
03

More useful comparisons

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Sofar Solar ESI-6.5K-T1 vs GoodWe GW6.5KN-ET
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Sofar Solar ESI-6.5K-T1 vs Easun Power 6.2KVA (PVmax=500V, 48V battery)
16 differences, the largest is rated ac power
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Sofar Solar ESI-6.5K-T1 vs Easun Power POW-HVM6200W-48V
17 differences, the largest is rated ac power
04

Written summary

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