--- title: "SOFAR 20KTLX2-G3P Grid-tie Inverter: Specs & Datasheet | ComparePV" description: "SOFAR 20KTLX2-G3P 20 kW grid-tie inverter. Specs: 98.1% European efficiency, 2 MPPT, 1100 V max DC input, 20.5 kg." source: "https://comparepv.com/inverter/sofar-solar-sofar-20ktlx2-g3p" updated: 2026-01-16 --- # SOFAR 20KTLX2-G3P ## Identity - **Manufacturer:** Sofar Solar - **Model:** SOFAR 20KTLX2-G3P - **Series:** SOFAR 15-25KTLX-G3P - **Rated AC power:** 20 kW - **Type:** Grid-tie - **Phases:** Three-phase ## How it compares Compared against 227 inverters from 12 to 30 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 98.1% | 98.0% | Typical | 54 | | MPPT trackers | 2 | 2 | Typical | 53 | | Max DC input voltage | 1100 V | 1000 V | Strong - top 21% | 1 | | Weight per kW | 1.0 | 1.6 | Strong - top 11% | 26 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 20 kW - **Max AC power:** 22.00 kW - **Max apparent power:** 22.00 kVA - **Phases:** Three-phase - **Nominal AC voltage:** 400 V - **Max AC current:** 33.5 A - **Grid frequency:** 50 Hz - **Power factor:** 0.8 leading – 0.8 lagging - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC voltage:** 1100 V - **MPPT voltage range:** 160 to 1000 V - **Start-up voltage:** 180 V - **MPPT trackers:** 2 ### Efficiency - **European efficiency:** 98.1 % - **Max efficiency:** 98.6 % ### Physical - **Dimensions:** 412 × 491 × 188 mm - **Weight:** 20.5 kg - **Enclosure:** IP66 - **Cooling:** forced-air - **Operating temperature:** -30 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Bluetooth, Display - **Protocols:** RS485, Wi‑Fi, Bluetooth (app) - **Protection:** DC switch, Surge protection ### Warranty and certificates - **Certifications:** IEC/EN 62109-1/2, IEC/EN 61000-6-1/2/3/4, IEC 62116, IEC 61727, IEC 61683, IEC 60068-2-1/2/14/30, VDE-AR-N 4105, VDE V 0126-1-1, EN 50549-1/10 ### Pros - **Peak efficiency ≥98.6% - class-leading performance** - The official SOFAR 15~25KTLX-G3P datasheet (sofarsolar.com, February 2024) confirms a maximum efficiency of ≥98.6%, placing the series on par with the SMA STP 15-25 and Fronius Symo GEN24 Plus in this power class. For a 20 kW system, this translates to several tens of kWh of additional annual yield compared to inverters operating at ~97.5% efficiency. - **IP66 rating and operating range -30°C to +60°C** - The IP66 ingress protection rating - one step above the widely used IP65 - provides resistance to powerful water jets, allowing outdoor installation without an additional enclosure or canopy. The -30°C to +60°C operating temperature range eliminates the risk of frost damage in winter and thermal shutdown in summer under Polish climate conditions, with no need for supplementary active cooling. - **MPPT 160-1000 V with 182 mm and 210 mm module compatibility** - The 160 V lower MPPT threshold enables operation with short strings (east-west orientations, partially shaded roof sections) without the risk of dropping out of the MPPT operating window. Manufacturer-confirmed compatibility with 182 mm (M10) and 210 mm (G12) wafer formats ensures full readiness to pair with today's highest-output modules (Jinko Tiger Neo, LONGi Hi-MO 6, Trina Vertex). - **1100 V DC input, 110% AC overload, and dual-side SPD Type II** - A maximum DC input voltage of 1100 V allows longer string designs and fewer parallel connections, reducing DC wiring BoS costs. The sustained 110% AC overload capability lowers the risk of disconnection during transient power peaks, while built-in Type II surge protection devices (SPD) on both the DC and AC sides are included as standard - not a paid option. - **12-year standard warranty and Grade A status** - Sofar Solar provides a 12-year factory warranty for the European market (sofarsolarpoland.pl, sofarsolar.eu), while SMA and Fronius begin at 5 years with paid extension options. Additionally, Sofar appears on the PVBL 2025 Top 20 Global Solar Inverter Brands list with a Grade A accreditation, facilitating bankability for commercial projects with domestic lenders. ### Cons - **No hybrid functionality - grid-tied only** - The G3P series lacks both DC- and AC-coupled interfaces for energy storage integration. Adding a battery at a later stage requires a full inverter replacement with a hybrid unit - such as Sofar's own HYD 5-20KTL-3PH series, SolarEdge E-WR3, or Fronius GEN24 Plus. Given the rapid growth of the ESS market in Poland in 2024-2025, this limitation may shorten the product's effective market lifecycle for investors planning a future system expansion. ## About this series The SOFAR 15-25KTLX-G3P series are **three-phase grid-tie inverters** designed for installations ranging from large residential to commercial and small industrial applications - where reliable operation under varying conditions and flexible PV string design are key. The key advantage is **multi-point MPPT tracking**, which facilitates high energy yields regardless of different panel orientations, unequal module selection, or partial shading - the inverter effectively harvests energy from each generator section. High **European efficiency** means the device maintains excellent performance even in typical, variable operating conditions, not just in an ideal laboratory setting, translating to real annual energy production. Standard features include **remote software updates** and enhanced communication and monitoring capabilities (e.g., WLAN/Bluetooth and RS485 - depending on configuration), enabling faster service and diagnostics. This is not a hybrid inverter, so **it is not designed for direct integration with energy storage systems**; it excels in situations where maximizing self-consumption in an on-grid system and reliable operation of DC and AC protection features is a priority. ## Questions ### How many MPPT trackers does the SOFAR 15-25KTLX-G3P inverter have, and is that sufficient for arrays with different roof orientations? The SOFAR 15-25KTLX-G3P series is equipped with 2 independent MPPT trackers, each serving 2 DC inputs, for a total of 4 string inputs. The MPPT operating voltage range is 160-1000 V, and the maximum DC input voltage is 1100 V. The two independent trackers allow strings with different orientations or tilt angles to be connected without significant yield loss, as each section operates at its own optimal power point. ### What is the peak efficiency of the SOFAR 25KTLX-G3P inverter, and how does it perform under real-world conditions? The maximum efficiency of the unit reaches approximately 98.6-98.75%. The high European efficiency rating indicates that the inverter maintains excellent performance under the variable irradiance typical of Central European climates, not just under laboratory conditions. In practice, this translates into higher annual energy yield compared to inverters with a lower weighted efficiency. ### What warranty is provided for the SOFAR 15-25KTLX-G3P inverter? The standard manufacturer's warranty for the SOFAR 15-25KTLX-G3P series is 10 years, and many distributors offer an extension to 12 years through product registration or commercial agreements. Sofar Solar also supports remote firmware updates, meaning the unit receives patches and new features throughout its entire service life without requiring an on-site service visit. ### Is the SOFAR 15-25KTLX-G3P inverter compatible with a battery energy storage system? No - the SOFAR 15-25KTLX-G3P series is a grid-tie inverter, not a hybrid inverter. It does not have a battery input or an energy storage management algorithm. If you are planning an installation with battery storage, you should select a dedicated hybrid inverter from Sofar Solar's portfolio (e.g., the HYD series). The G3P series is, however, an excellent choice wherever the priority is maximizing self-consumption in an on-grid configuration. ### What monitoring and communication interfaces does the SOFAR 15-25KTLX-G3P inverter offer? As standard, the inverter is equipped with RS485 and Bluetooth, enabling local diagnostics and connection to data loggers. An optional Wi-Fi or Ethernet module is available, providing real-time production monitoring via the SolarmanPV app and remote firmware updates. The integrated DC switch and string-level monitoring facilitate rapid fault diagnosis in the event of a failure. ### What types of installations is the SOFAR 15-25KTLX-G3P series best suited for? The series covers power ratings of 15, 20, and 25 kW, positioning it in the segment of larger prosumer, commercial, and light-industrial installations - such as manufacturing facilities, warehouses, office buildings, and large residential properties with a three-phase grid connection. The wide MPPT voltage range (160-1000 V) and compatibility with high-power modules (182 mm and 210 mm cell formats) make the inverter well-suited for modern panels rated above 500 Wp. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/sofar-15-25ktlx-g3p-datasheet-2025-07-21-v2-0-en-mea-apac-3077e1d80bc9.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Growatt MID 20KTL3-X](https://comparepv.com/inverter/growatt-mid-20ktl3-x) | 20 kW | 98.6% | 2 | 23.0 kg | +0.5 pp efficiency, 2.5 kg heavier | | [Fronius Verto 20.0](https://comparepv.com/inverter/fronius-international-fronius-verto-20-0) | 20 kW | 98.3% | 4 | 35.2 kg | +2 MPPT, 14.7 kg heavier | | [Sungrow SG20KTL-M](https://comparepv.com/inverter/sungrow-sg20ktl-m) | 20 kW | 98.3% | 2 | 24.0 kg | 3.5 kg heavier | | [Huawei SUN2000-20KTL-M2](https://comparepv.com/inverter/huawei-sun2000-20ktl-m2) | 20 kW | 98.3% | 2 | 25.0 kg | 4.5 kg heavier | | [Huawei SUN2000-20KTL-M0](https://comparepv.com/inverter/huawei-sun2000-20ktl-m0) | 20 kW | 98.3% | 2 | 25.0 kg | 4.5 kg heavier | | [Sungrow SG20T-P2-CN](https://comparepv.com/inverter/sungrow-sg20t-p2-cn) | 20 kW | 98.3% | 2 | 19.0 kg | 1.5 kg lighter | | [Sungrow SG20RT-20](https://comparepv.com/inverter/sungrow-sg20rt-20) | 20 kW | 98.2% | 2 | 20.0 kg | Similar on paper | | [SOFAR 20KTLX-G3](https://comparepv.com/inverter/sofar-solar-sofar-20ktlx-g3) | 20 kW | 98.2% | 2 | 22.0 kg | 1.5 kg heavier | --- Source: https://comparepv.com/inverter/sofar-solar-sofar-20ktlx2-g3p