--- title: "GoodWe GW12K-ET-L-G10 Hybrid Inverter: Specs & Datasheet | ComparePV" description: "GoodWe GW12K-ET-L-G10 12 kW hybrid inverter. Specs: 95.5% European efficiency, 2 MPPT, 1000 V max DC input, 45.3 kg." source: "https://comparepv.com/inverter/goodwe-gw12k-et-l-g10" updated: 2026-01-16 --- # GoodWe GW12K-ET-L-G10 ## Identity - **Manufacturer:** GoodWe - **Model:** GW12K-ET-L-G10 - **Series:** ET LV - **Rated AC power:** 12 kW - **Type:** Hybrid - **Phases:** Three-phase - **Battery port:** yes ## How it compares Compared against 266 inverters from 6 to 12 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 95.5% | 97.6% | Weak - bottom 1% | 192 | | MPPT trackers | 2 | 2 | Typical | 46 | | Max DC input voltage | 1000 V | 1000 V | Typical | 59 | | Weight per kW | 3.8 | 2.3 | Weak - bottom 14% | 228 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 12 kW - **Max AC power:** 13.20 kW - **Max apparent power:** 13.20 kVA - **Phases:** Three-phase - **Nominal AC voltage:** 400 V - **Max AC current:** 19.1 A - **Grid frequency:** 50 Hz - **Power factor:** ~1 (adjustable 0.8 leading … 0.8 lagging) - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC input power:** 24.00 kW - **Max DC voltage:** 1000 V - **MPPT voltage range:** 150 to 850 V - **Start-up voltage:** 180 V - **MPPT trackers:** 2 - **Max input current per MPPT:** 20.0 A - **Max short-circuit current per MPPT:** 26.0 A ### Efficiency - **European efficiency:** 95.5 % - **Max efficiency:** 97.8 % ### Battery - **Battery port:** Yes - **Battery voltage:** 40–60 - **Grid-forming:** Yes ### Physical - **Dimensions:** 551 × 756 × 258 mm - **Weight:** 45.3 kg - **Enclosure:** IP66 - **Cooling:** forced-air - **Noise:** 45 dB - **Operating temperature:** -35 to 60 °C - **Max humidity:** 95 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Ethernet, Bluetooth, Display - **Protocols:** WiFi, LAN/Ethernet, Bluetooth, 4G, RS485, CAN - **Protection:** AFCI, DC switch, Surge protection ### Warranty and certificates - **Certifications:** NRS 097-2-1, IEC 62116, IEC 61727, IEC 61683, IEC 62891, IEC 60068, EN 50530, IEC 62109-1, IEC 62109-2, IEC 62920, IEC 61000-6-2, IEC 61000-6-4, IEC 61000-2-2, EN 300328, EN 301489, EN IEC 62311, EN 62479 ### Pros - **Efficiency of 97.8%** - The 12 kW model achieves a maximum efficiency of 97.8%, while the 10 kW model achieves 97.6%, placing the series among the leading three-phase hybrid inverters (SolarEdge ~97.6%). High European efficiency translates into real energy savings in the Polish climate, characterized by significant periods of partial sunlight (X-III). - **Switching to backup mode in less than 4 ms** - The transition time to backup power is less than 4 ms, meeting the requirements of sensitive devices (computers, NAS, heat pumps with inverters). Typical solutions without UPS systems achieve 20-30 ms - a significant difference when using sensitive controllers. - **IP66 rating and 200% oversizing** - The IP66 protection rating exceeds the typical IP65 standard used by many competitors, allowing for outdoor installation without the need for additional enclosures. The permitted over-sizing of the PV system up to 200% of AC power allows for effective battery charging, even with the dispersed radiation typical of Polish November-February. - **Open 48 V battery ecosystem** - The inverter is compatible with a wide range of LV storage systems from various manufacturers (as confirmed in GoodWe's official Battery Compatibility Overview), allowing the installer to choose from multiple brands - unlike the closed ecosystems of Huawei (LUNA2000) and SolarEdge (Energy Hub). It enables phased capacity expansion without replacing the inverter. - **10-year warranty included, free of charge** - The standard 5-year warranty is extended free of charge to 10 years after online registration and installation by a certified GoodWe PLUS+ installer. For 3-phase hybrid inverters in the 5-20 kW range, this is one of the longer free warranty periods available on the Polish market. ### Cons - **Architecture: 48 V → currents >300 A** - With power outputs of 15-20 kW, the charging/discharging current of a 48 V battery exceeds 300 A (theoretically ~417 A for 20 kW), which requires DC cables with a cross-section of ≥95 mm² of copper or multiple parallel conductors, increasing installation costs. High-voltage systems (e.g., Huawei LUNA2000 at a nominal ~200 V) reduce this current to approximately 100 A, simplifying and reducing the cabling costs. - **Maximum DC input voltage: 600 V** - The allowable DC input voltage is 600 V, while certain premium-class hybrid inverters (e.g., SMA SHP, Fronius Symo Hybrid GEN24) support 1000 V. This limits the maximum string length for modules with high Voc and may require shortening the strings or using an additional MPPT. ## About this series The GoodWe ET LV series are **three-phase hybrid inverters** designed for installations where autonomous consumption, flexible expansion, and stable home power even with grid limitations are key priorities. This solution cooperates with **low-voltage energy storage systems (48 V)**, making it easier to select the accumulator capacity based on real needs and enabling phased investment. Depending on the variant, they feature **2-4 independent MPPTs**, facilitating optimisation of yields at different roof orientations, PV expansion, or seasonal shading - each string can operate closer to its own optimum. The high European efficiency translates to lower losses under typical climatic conditions in Poland, meaning more energy fed into the system annually, not just under laboratory maximums. On a daily basis, you benefit from **monitoring via SEMS** (application and portal) as well as convenient communication options, including WiFi and wired integration possibilities. The series offers safety features (among others: protection and diagnostics), and in practice, they are often chosen for demanding homes and small commercial properties planning for energy storage and backup power. ## Questions ### What does the MPPT function in the GoodWe ET LV inverter mean in practice? Depending on the power variant, the GoodWe ET LV series offers 2 to 4 independent MPPT inputs. This means you can connect panels facing different directions (e.g., south and west) or on different roof sections, and each string will operate independently at its optimal power point. This is particularly important when expanding a PV system or when some panels are shaded. ### Which batteries are compatible with the GoodWe ET LV inverter? The ET LV series is compatible with 48 V low-voltage energy storage systems. The Lynx Home U and Lynx Home A series, as well as the BAT series, are compatible with GoodWe batteries. The inverter also supports popular batteries from other manufacturers, such as BYD Battery-Box LV and LG RESU LV. This allows you to choose a capacity that fits your budget and to gradually expand your energy storage system over time. ### What is the warranty on the GoodWe ET LV inverter? The standard warranty for the GoodWe ET LV series is 5 years. GoodWe, as a Tier 1 manufacturer with a strong market position, offers an option to extend the warranty to 10 years. It is advisable to inquire with the distributor about the current warranty package available in Poland, as the terms may vary depending on the seller. ### How quickly does the GoodWe ET LV inverter switch to backup mode when there is a power outage from the grid? The ET LV series switches to backup power mode in less than 4 ms. This is so fast that most household devices, including computers and appliances, will not even notice the brief interruption. To use the backup power, the energy storage unit must be connected to the inverter. ### Is the GoodWe ET LV inverter suitable for a typical single-family home in Poland? Yes, the ET LV series is available in power ratings from 5 to 20 kW, which covers the needs of both smaller homes with an installation of around 10 kW, as well as larger facilities requiring 20 kW. The three-phase connection facilitates even distribution of the load and is required by many grid operators for power levels above 3.68 kW. The high European efficiency translates into real savings throughout the year. ### How to monitor the performance of the GoodWe ET LV inverter, and is there an app available for this purpose? The ET LV series supports the SEMS (Smart Energy Management System), which is available as a mobile application and a web portal. The inverter has a built-in Wi-Fi module and also supports RS485 and CAN communication. In the SEMS application, you can track energy production, energy consumption, battery charge status, and the installation's operating history in real-time. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/gw-et-lv-5-20kw-bb2b278b445c.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Growatt MID 12KTL3-XH](https://comparepv.com/inverter/growatt-mid-12ktl3-xh) | 12 kW | 98.5% | | 31.0 kg | +3.0 pp efficiency, 14.3 kg lighter | | [Huawei SUN5000-12K-MAP0](https://comparepv.com/inverter/huawei-sun5000-12k-map0) | 12 kW | 98.2% | 2 | 21.0 kg | +2.7 pp efficiency, 24.3 kg lighter | | [Huawei SUN2000-12KTL-M1 (High current version)](https://comparepv.com/inverter/huawei-sun2000-12ktl-m1-high-current-version) | 12 kW | 98.2% | 2 | 17.0 kg | +2.7 pp efficiency, 28.3 kg lighter | | [Huawei SUN2000-12K-MAP0](https://comparepv.com/inverter/huawei-sun2000-12k-map0) | 12 kW | 98.2% | 2 | 21.0 kg | +2.7 pp efficiency, 24.3 kg lighter | | [Huawei SUN2000-12KTL-M1](https://comparepv.com/inverter/huawei-sun2000-12ktl-m1) | 12 kW | 98.2% | 2 | 17.0 kg | +2.7 pp efficiency, 28.3 kg lighter | | [Growatt MOD 12KTL3-HU](https://comparepv.com/inverter/growatt-mod-12ktl3-hu) | 12 kW | 98.1% | 3 | 20.0 kg | +2.6 pp efficiency, +1 MPPT, 25.3 kg lighter | | [Huawei SUN2000-12K-MB0](https://comparepv.com/inverter/huawei-sun2000-12k-mb0) | 12 kW | 97.9% | 2 | 21.0 kg | +2.4 pp efficiency, 24.3 kg lighter | | [Sofar Solar ESI-12K-T1](https://comparepv.com/inverter/sofar-solar-esi-12k-t1) | 12 kW | 97.5% | 3 | 30.0 kg | +2.0 pp efficiency, +1 MPPT, 15.3 kg lighter | --- Source: https://comparepv.com/inverter/goodwe-gw12k-et-l-g10