--- title: "SOFAR 11KTLX-G3 Grid-tie Inverter: Specs & Prices | ComparePV" description: "SOFAR 11KTLX-G3 10 kW grid-tie inverter: 5 shop offers from 2 481.62 zł. Specs: 98.0% European efficiency, 2 MPPT, 1100 V max DC input, 18.0 kg." source: "https://comparepv.com/inverter/sofar-solar-sofar-11ktlx-g3" updated: 2026-10-11 --- # SOFAR 11KTLX-G3 ## Identity - **Manufacturer:** Sofar Solar - **Model:** SOFAR 11KTLX-G3 - **Series:** SOFAR 3.3-12KTLX-G3 - **Rated AC power:** 10 kW - **Type:** Grid-tie - **Phases:** Three-phase ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kW | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [7Sun](https://comparepv.com/go/228188) | Poland | 2 481.62 zł incl. VAT | 248.16 zł/kW | In stock | Last read 11 Oct 02:36 | | [ensun.sk](https://comparepv.com/go/471177) | Slovakia | 661.96 € incl. VAT | 66.20 €/kW | In stock | Last read 11 Oct 00:49 | | [Sklep Soltech](https://comparepv.com/go/6273) | Poland | 2 404.42 zł net | 240.44 zł/kW | Not stated | Last read 11 Oct 04:19 | | [www.fotovoltaika-eshop.sk](https://comparepv.com/go/93905) | Slovakia | 1 076.25 € incl. VAT | 107.62 €/kW | In stock | Last read 11 Oct 03:03 | | [energiatuote.fi](https://comparepv.com/go/114903) | Finland | 1 290 € incl. VAT | | Not stated | Last read 10 Oct 23:05 | ## 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 | 98.0% | 97.6% | Strong - top 22% | 37 | | MPPT trackers | 2 | 2 | Typical | 46 | | Max DC input voltage | 1100 V | 1000 V | Strong - top 12% | 1 | | Weight per kW | 1.8 | 2.3 | Typical | 66 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 10 kW - **Max AC power:** 11.00 kW - **Max apparent power:** 11.00 kVA - **Phases:** Three-phase - **Nominal AC voltage:** 400 V - **Max AC current:** 16.7 A - **Grid frequency:** 50 Hz - **Power factor:** 1 (adjustable ±0.8) - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC voltage:** 1100 V - **MPPT voltage range:** 140 to 1000 V - **Start-up voltage:** 160 V - **MPPT trackers:** 2 - **Max input current per MPPT:** 15.0 A - **Max short-circuit current per MPPT:** 22.5 A ### Efficiency - **European efficiency:** 98.0 % - **Max efficiency:** 98.5 % ### Physical - **Dimensions:** 385 × 430 × 182 mm - **Weight:** 18.0 kg - **Enclosure:** IP65 - **Cooling:** natural - **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 61000-6-1/3, IEC/EN 61000-3-2/3, IEC/EN 61000-3-11/12, IEC 62116, IEC 61727, IEC 61683, IEC 60068-1/2/14/30, IEC/EN 62109-1/2, G98/G99, VDE-AR-N 4105, VDE V 0126-1-1, EN 50549-1, UNE 217002-2020 ### Pros - **High Efficiency: 98.5% Peak / 98.0% EU** - A peak efficiency of 98.5% and a European efficiency of 98.0% place this series on par with higher-priced premium brands such as SMA and Fronius. EU efficiency is a more accurate predictor of real-world annual losses in Central European climates than peak efficiency alone. - **Convection Cooling - No Fans** - Natural convection cooling eliminates moving parts susceptible to wear, resulting in silent operation (0 dB mechanical noise) and superior long-term reliability. This is a key advantage over fan-cooled models, which may require fan replacement after several years of service. - **Dual Independent MPPT, 140-1000 V DC Input Range** - The wide MPPT input voltage range (140-1000 V, max DC 1100 V) allows flexible string configuration. Independent operation of two MPPT trackers eliminates cross-string drag in systems with mixed orientations or partial shading - a direct advantage over single-tracker inverters in this price class. - **IP65 Enclosure + Type II SPD on Both DC and AC** - The IP65-rated enclosure enables outdoor installation without additional weatherproofing. Integrated Type II surge protection devices (SPD) on both the DC and AC sides deliver a complete protection package that some competitors in this price segment offer only as an option or only on one side. - **10-Year Warranty + String-Level Monitoring** - The standard warranty is 5 years; however, through authorized distributors in Poland (including Corab) the unit ships with a 10-year warranty included in the price, and up to 12 years is available via sofar-sklep.pl - all at approximately 10-15% below SMA/Fronius pricing for comparable power output, representing genuine added value. This is complemented by string-level monitoring and over-the-air firmware update capability. ### Cons - **No Hybrid / Off-Grid Mode** - The KTLX-G3 series are purely grid-tie inverters with no native battery storage integration. In the 2025 market, where an increasing number of prosumers are considering retrofitting battery storage, this series forecloses a straightforward upgrade path - requiring either a full inverter replacement or the addition of an external EMS device. ## About this series The SOFAR 3.3-12KTLX-G3 series are **three-phase grid-tie inverters** designed for stable operation in residential and small to medium-sized commercial installations. These units feature **two independent MPPT trackers**, which facilitate high yields even when modules are distributed across different roof sections or partially shaded-each string string is optimized independently, rather than dragging down the entire installation. In practice, high European efficiency is also important, meaning real efficiency calculated under typical operating conditions in Europe-leading to lower annual energy losses. The series supports **string-level monitoring**, remote firmware updates, and convenient diagnostics via an app and communication (e.g., RS485, Bluetooth; optionally WiFi/Ethernet-depending on configuration). These are not hybrid inverters, so they are not designed for direct integration with energy storage systems. However, you benefit from a comprehensive suite of safety features (including type II SPDs on both DC and AC sides) and the typical, long warranty for this class of equipment. ## Questions ### What is the warranty period for the SOFAR 3.3-12KTLX-G3 series inverters? The standard manufacturer's warranty for the SOFAR 3.3-12KTLX-G3 series is 5 years. Sofar Solar offers extended warranty options of 10 or 20 years through its additional protection program. It is advisable to arrange an extension at the time of purchase, as the cost of replacing an inverter after the basic warranty expires can be substantial. ### Is the SOFAR 3.3-12KTLX-G3 suitable for installations where panels are mounted on two different roof pitches? Yes, this is one of the key advantages of this series. The two independent MPPT trackers allow strings from different roof orientations to be connected - for example, one group of panels facing south and another facing east or west. Each tracker independently optimizes the performance of its own string, so shading or differing irradiance on one group does not reduce the overall yield of the entire installation. ### What is the efficiency of the SOFAR 12KTLX-G3 inverter, and what does European efficiency mean? The maximum efficiency of the SOFAR 3.3-12KTLX-G3 series is up to 98.5%, while the European efficiency (EU efficiency) is approximately 98.0%. European efficiency is more relevant in practice - it accounts for the typical solar irradiance profile in Europe, including operation at partial load. A higher EU efficiency value directly translates to lower losses and a higher annual energy yield from the installation. ### Can the SOFAR 3.3-12KTLX-G3 inverter be connected to an energy storage system? No. The SOFAR 3.3-12KTLX-G3 series are grid-tie inverters - they are not hybrid units and do not feature a battery input. Energy is fed directly into the grid or consumed on-site in real time. If you are planning to integrate energy storage, you should consider Sofar Solar's hybrid inverter series, such as the SOFAR HYD-G2, which is designed for use with battery systems. ### How can the SOFAR 3.3-12KTLX-G3 inverter be monitored, and is an additional communication gateway required? The inverter supports RS485 and Bluetooth communication as standard. A Wi-Fi or Ethernet module is optional and may require a separate gateway (e.g., LSW-3 or equivalent). Once connected to the network, the installation can be monitored via the SolarmanPV app or the Sofar Solar platform, providing string-level performance visibility, production history, and remote firmware updates. ### What protection features does the SOFAR 3.3-12KTLX-G3 series include, and is it protected against overvoltage? The series is equipped with Type II surge protection devices (SPD) on both the DC side (panels) and the AC side (grid), providing protection against lightning strikes and grid overvoltage events. Additional protective features include DC reverse polarity protection, short-circuit protection, insulation monitoring, and compliance with the safety standards required by Polish distribution system operators (DSOs). The inverter carries an IP65 ingress protection rating, making it suitable for outdoor installation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/1717057301738057791-5103bd057818.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Growatt MOD 10KTL3-X2(Pro)](https://comparepv.com/inverter/growatt-mod-10ktl3-x2-pro) | 10 kW | 98.2% | 2 | 14.6 kg | 3.4 kg lighter | | [Growatt MOD 10KTL3-X](https://comparepv.com/inverter/growatt-mod-10ktl3-x) | 10 kW | 98.1% | 2 | 14.0 kg | 4.0 kg lighter | | [Sungrow SG10KTL-M](https://comparepv.com/inverter/sungrow-sg10ktl-m) | 10 kW | 98.1% | 2 | 20.0 kg | 2.0 kg heavier | | [Sungrow SG10RT-20](https://comparepv.com/inverter/sungrow-sg10rt-20) | 10 kW | 98.1% | 2 | 17.0 kg | 1.0 kg lighter | | [SOFAR 10KTLX-G3-A](https://comparepv.com/inverter/sofar-solar-sofar-10ktlx-g3-a) | 10 kW | 98.0% | 2 | 18.0 kg | Similar on paper | | [SMA Solar STP10.0-3AV-40](https://comparepv.com/inverter/sma-solar-stp10-0-3av-40) | 10 kW | 98.0% | 2 | 20.5 kg | 2.5 kg heavier | | [GoodWe GW10KN-DT](https://comparepv.com/inverter/goodwe-gw10kn-dt) | 10 kW | 98.0% | 2 | 24.0 kg | 6.0 kg heavier | | [Sungrow SG7.0RT](https://comparepv.com/inverter/sungrow-sg7-0rt) | 10 kW | 97.9% | 2 | 18.0 kg | Similar on paper | --- Source: https://comparepv.com/inverter/sofar-solar-sofar-11ktlx-g3