--- title: "GoodWe GW6.5KN-ET (ET PLUS+ 16A Series) vs Sofar Solar ESI-6.5K-T1 - Inverter Comparison | ComparePV" description: "Compare GoodWe GW6.5KN-ET (ET PLUS+ 16A Series) vs Sofar Solar ESI-6.5K-T1 side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification." source: "https://comparepv.com/compare-inverters/goodwe-gw6-5kn-et-et-plus-16a-series/sofar-solar-esi-6-5k-t1" updated: 2026-01-16 --- # GoodWe GW6.5KN-ET (ET PLUS+ 16A Series) vs Sofar Solar ESI-6.5K-T1 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. ## The two inverters | Attribute | A | B | | --- | --- | --- | | Inverter | [GoodWe GW6.5KN-ET (ET PLUS+ 16A Series)](https://comparepv.com/inverter/goodwe-gw6-5kn-et-et-plus-16a-series) | [Sofar Solar ESI-6.5K-T1](https://comparepv.com/inverter/sofar-solar-esi-6-5k-t1) | | Manufacturer | GoodWe | Sofar Solar | | Rated AC power | 6.5 kW | 6.5 kW | | Type | Hybrid | Hybrid | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | GW6.5KN-ET (ET PLUS+ 16A Series) | ESI-6.5K-T1 | Difference | | --- | --- | --- | --- | | Max input current per tracker | 16.0 A | 20.0 A | +4.0 A for ESI-6.5K-T1 | | 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 | | Weight | 24.0 kg | 30.0 kg | -6.0 kg for GW6.5KN-ET (ET PLUS+ 16A Series) | | Weight per kW | 3.7 kg/kW | 4.6 kg/kW | -0.9 kg/kW for GW6.5KN-ET (ET PLUS+ 16A Series) | | European efficiency | 97.2 % | 97.0 % | +0.2 pp for GW6.5KN-ET (ET PLUS+ 16A Series) | | MPP trackers | 2 | 3 | +1 trackers for ESI-6.5K-T1 | | 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 (ET PLUS+ 16A Series) | | Battery voltage | 180 ~ 600 | 350-435 Vdc | 180 ~ 600 vs 350-435 Vdc | | Dimensions | 516x415x180 mm | 440x708x170 mm | 516x415x180 mm vs 440x708x170 mm | ## Every compared parameter | Parameter | GW6.5KN-ET (ET PLUS+ 16A Series) | ESI-6.5K-T1 | | --- | --- | --- | | Rated AC power | 6.50 kW | 6.50 kW | | Max AC power | 7.15 kW | 7.15 kW | | Grid connection | 3-phase | 3-phase | | Nominal AC voltage | 400 V | 400 V | | Max AC current | 10.8 A | 10.9 A | | Max PV power | 9.70 kW | 13.00 kW | | DC/AC ratio | 1.49 | 2.00 | | Max DC voltage | 1000 V | 1000 V | | MPPT voltage range | 200-850 V | 160-950 V | | Start voltage | 180 V | 200 V | | MPP trackers | 2 | 3 | | Strings per tracker | 1 | 1 | | Max input current per tracker | 16.0 A | 20.0 A | | European efficiency | 97.2 % | 97.0 % | | Max efficiency | 98.0 % | 98.0 % | | CEC efficiency | - | - | | Battery input | Yes | Yes | | Battery voltage | 180 ~ 600 | 350-435 Vdc | | Max charge current | 25 A | 25 A | | Backup power | 10.0 kW | - | | Weight | 24.0 kg | 30.0 kg | | Weight per kW | 3.7 kg/kW | 4.6 kg/kW | | Dimensions | 516x415x180 mm | 440x708x170 mm | | Ingress protection | IP66 | IP66 | | Cooling | natural | natural | | Noise | - | - | | Max operating temperature | 60 °C | 60 °C | | Wi-Fi | Yes | - | | Ethernet | Yes | - | | Arc fault protection | - | Yes | | Integrated DC switch | Yes | Yes | | Warranty | - | - | ## Related comparisons - [GoodWe GW6.5KN-ET (ET PLUS+ 16A Series) vs GoodWe GW6.5KN-ET](https://comparepv.com/compare-inverters/goodwe-gw6-5kn-et-et-plus-16a-series/goodwe-gw6-5kn-et) - 2 differences, the largest is max efficiency - [GoodWe GW6.5KN-ET (ET PLUS+ 16A Series) vs Easun Power 6.2KVA (PVmax=500V, 48V battery)](https://comparepv.com/compare-inverters/goodwe-gw6-5kn-et-et-plus-16a-series/easun-power-6-2kva-pvmax-500v-48v-battery) - 16 differences, the largest is rated ac power - [GoodWe GW6.5KN-ET (ET PLUS+ 16A Series) vs Easun Power POW-HVM6200W-48V](https://comparepv.com/compare-inverters/goodwe-gw6-5kn-et-et-plus-16a-series/easun-power-pow-hvm6200w-48v) - 18 differences, the largest is rated ac power --- Source: https://comparepv.com/compare-inverters/goodwe-gw6-5kn-et-et-plus-16a-series/sofar-solar-esi-6-5k-t1 Not in this file, on the page: a written summary generated on request.