--- title: "SOFAR 3.6KTLM-G3 Grid-tie Inverter: Specs & Prices | ComparePV" description: "SOFAR 3.6KTLM-G3 3.6 kW grid-tie inverter: 2 shop offers from 1 635.21 zł. Specs: 97.5% European efficiency, 2 MPPT, 600 V max DC input, 10.0 kg." source: "https://comparepv.com/inverter/sofar-solar-sofar-3-6ktlm-g3" updated: 2026-10-11 --- # SOFAR 3.6KTLM-G3 ## Identity - **Manufacturer:** Sofar Solar - **Model:** SOFAR 3.6KTLM-G3 - **Series:** SOFAR 3-6KTLM-G3 - **Rated AC power:** 3.6 kW - **Type:** Grid-tie - **Phases:** Single-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 | | --- | --- | --- | --- | --- | --- | | [Sklep Soltech](https://comparepv.com/go/5960) | Poland | 1 635.21 zł net | 454.23 zł/kW | Not stated | Last read 11 Oct 04:21 | | [www.fotovoltaika-eshop.sk](https://comparepv.com/go/93908) | Slovakia | 693.24 € incl. VAT | 192.57 €/kW | In stock | Last read 11 Oct 03:03 | ## How it compares Compared against 362 inverters from 3 to 6 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 97.5% | 97.2% | Typical | 50 | | MPPT trackers | 2 | 2 | Typical | 13 | | Max DC input voltage | 600 V | 600 V | Typical | 94 | | Weight per kW | 2.8 | 3.3 | Typical | 125 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 3.6 kW - **Max AC power:** 3.68 kW - **Max apparent power:** 3.68 kVA - **Phases:** Single-phase - **Nominal AC voltage:** 230 V - **Max AC current:** 16.0 A - **Grid frequency:** 50 Hz - **Power factor:** 1 (adjustable +/-0.8) - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC voltage:** 600 V - **MPPT voltage range:** 80 to 550 V - **Start-up voltage:** 90 V - **MPPT trackers:** 2 - **Max input current per MPPT:** 15.0 A - **Max short-circuit current per MPPT:** 22.5 A ### Efficiency - **European efficiency:** 97.5 % - **Max efficiency:** 98.4 % ### Physical - **Dimensions:** 344 × 349 × 164 mm - **Weight:** 10.0 kg - **Enclosure:** IP65 - **Cooling:** natural - **Operating temperature:** -30 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Bluetooth, Display - **Protocols:** RS485, Bluetooth, Wi-Fi (optional), Ethernet (optional) - **Protection:** DC switch, Surge protection ### Warranty and certificates - **Certifications:** IEC/EN 61000-6-2/3, 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, VDE-AR-N 4105, VDE V 0126-1-1, C10/11, UNE 217002:2020, G98/G99, EN 50549-1, ANRE 208 ### Pros - **97.3% European Efficiency (98.4% Peak)** - A 97.3% EU efficiency rating places this series at the top of the budget-to-mid-range single-phase grid-tied inverter segment. By comparison, competing models at this price point (e.g., Growatt MIN TL-X) typically achieve 97.0-97.5% EU efficiency - a difference that translates to approximately 10-20 kWh/year in favor of the G3 in a typical 5 kW system. - **Dual MPPT, 50-570 V MPP Voltage Range** - Two independent MPPT trackers with a wide input voltage range of 50-570 V allow strings of different orientations or tilt angles to be connected without mutual shading losses. The 570 V DC ceiling supports longer strings - up to approximately 18-20 standard 60-cell modules - eliminating the need for power optimizers. - **IP65 + Passive Cooling, \<25 dB(A)** - The IP65-rated enclosure and fanless natural convection cooling eliminate moving parts prone to failure, keep noise below 25 dB(A), and make the inverter well suited for indoor installation in residential buildings. An operating temperature range of -30…+60°C ensures reliable year-round performance under Polish climatic conditions. - **Low Weight and Compact Form Factor** - At 10 kg and 345×341×167 mm (H/W/D), the unit can be installed by a single technician without specialized lifting equipment. For reference, Fronius Primo inverters of the same power class weigh 16.3 kg - the G3 is approximately 39% lighter, meaningfully reducing installation time. - **Grade A Rated by Wood Mackenzie H1 2025** - Sofar Solar was awarded a Grade A rating in the Wood Mackenzie Inverter Bankability Report (H1 2025), recognizing manufacturers that meet rigorous ESG criteria, R&D investment levels, and production capacity utilization benchmarks. This confirms the manufacturer's creditworthiness and the long-term reliability of warranty support in the European market. ### Cons - **Grid-Tied Only - No Battery Storage Support** - The series does not support battery storage or backup power operation. Adding energy storage to the system requires replacing the inverter with a hybrid model (e.g., SOFAR HYD G-series or a competing hybrid unit) or purchasing a separate AC-coupled device. Given rising energy prices and growing demand for storage, this is a significant limitation for systems intended to operate for 10+ years. - **Wi-Fi and Ethernet Require an Optional Add-On Module** - The standard communication interfaces are RS485 and Bluetooth; Wi-Fi and Ethernet connectivity are optional and require a separately purchased communication module (Wi-Fi Stick or DataHub). Some installers report that the Wi-Fi module is not consistently included in the package, potentially adding approximately 30-60 EUR to the project cost and delaying monitoring commissioning. ## About this series The SOFAR 3-6KTLM-G3 series is a **single-phase grid-tie inverter** designed for home and small commercial installations, known for stable operation, simple configuration, and high energy yield under Polish conditions. Its key advantage is the **dual MPPT** - two independent trackers simplify optimization, especially when modules are on two roof tilts, have different orientations, or experience periodic shading. In practice, this means fewer losses and more predictable system performance. High **European efficiency** translates to real daily energy gains under typical operating conditions, not just ideal lab scenarios. Monitoring and communication are available - depending on the version and configuration, via WiFi, and optionally Ethernet, facilitating production monitoring in the app and quick diagnostics. This is not a hybrid inverter, so it does not directly work with energy storage systems. The series includes required certifications for the EU market, and the standard warranty is typically 10 years. ## Questions ### What is the warranty on the SOFAR 3-6KTLM-G3 series inverters? The standard manufacturer's warranty for the SOFAR 3-6KTLM-G3 series is 10 years. Sofar Solar offers the option to extend coverage to 15 or 20 years through an additional service package. It is strongly recommended to register the unit on the manufacturer's platform immediately after installation, as this is a prerequisite for activating full warranty protection. ### What is the purpose of dual MPPT in the SOFAR 3-6KTLM-G3 inverter, and when does it make a difference? Two independent MPPT trackers allow modules installed on two separate roof sections or with different orientations (e.g., south and east) to be connected as independent strings. Each string is then optimized separately, which can reduce energy yield losses by up to several percentage points compared to a single-MPPT inverter. This is particularly significant on rooftops with partial shading caused by chimneys or dormers. ### Can the SOFAR 3-6KTLM-G3 inverter be connected to an energy storage system (battery)? No, the SOFAR 3-6KTLM-G3 series is a grid-tied (on-grid) inverter only and does not support direct connection to an energy storage system. It has no dedicated DC inputs or AC outputs for batteries. If you plan to expand your installation with energy storage, you should consider a hybrid inverter from Sofar Solar's portfolio, such as a model from the HYD series. ### What is the European efficiency of the SOFAR 3-6KTLM-G3 inverter, and why is it a more important metric than peak efficiency? The European efficiency of the SOFAR 3-6KTLM-G3 series is approximately 97.3-97.5%, with a maximum efficiency of up to 98.4%. European efficiency is more meaningful in practice because it accounts for the typical load distribution in a Central European climate, where the inverter frequently operates at 20-50% of its rated power. This is the metric that determines real-world annual energy yield on a rooftop installation, rather than a peak result measured under controlled laboratory conditions. ### Does the SOFAR 3-6KTLM-G3 inverter operate in winter and at sub-zero temperatures? Yes, the SOFAR 3-6KTLM-G3 series operates across a temperature range of -30°C to +60°C, so typical Central European winters pose no issue. The 4-6 kW models feature fanless passive cooling, meaning there are no moving parts susceptible to freezing. The inverter starts up automatically as soon as the PV modules supply the minimum DC start-up voltage of 60 V. ### How can I monitor the SOFAR 3-6KTLM-G3 inverter from a smartphone? The inverter is equipped with a Wi-Fi or RS485 module that enables production monitoring via the SolarMan app (or the SOFAR platform). Once paired with your home Wi-Fi network, you have access to real-time and historical production data, alerts, and basic diagnostics directly from your smartphone. Optionally, an Ethernet data logger can be used for a more stable wired connection. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/sofar-3-6ktlm-g3-datasheet-2024-05-22-v6-1-en-int-df1ebeec2e43.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Ginlong Solis S6-GR1P3.6K-S](https://comparepv.com/inverter/ginlong-solis-s6-gr1p3-6k-s) | 3.6 kW | 97.1% | 2 | 8.9 kg | -0.4 pp efficiency, 1.1 kg lighter | | [Growatt MIN 3600TL-X](https://comparepv.com/inverter/growatt-min-3600tl-x) | 3.6 kW | 97.0% | 2 | 10.8 kg | -0.5 pp efficiency | | [Ginlong Solis S6-GR1P3.6K-M](https://comparepv.com/inverter/ginlong-solis-s6-gr1p3-6k-m) | 3.6 kW | 96.8% | 1 | 8.1 kg | -0.7 pp efficiency, -1 MPPT, 1.9 kg lighter | | [Ginlong Solis S6-GR1P3.6K](https://comparepv.com/inverter/ginlong-solis-s6-gr1p3-6k) | 3.6 kW | 96.6% | 2 | 11.2 kg | -0.9 pp efficiency, 1.2 kg heavier | | [Easun Power IGrid SV IV 3.6KW](https://comparepv.com/inverter/easun-power-igrid-sv-iv-3-6kw) | 3.6 kW | | | 11.0 kg | 1.0 kg heavier | | [SolarEdge EV Charging Single Phase Inverter SE3680H (aka H3680SE / SE3680H)](https://comparepv.com/inverter/solaredge-solaredge-ev-charging-single-phase-inverter-se3680h-aka-h3680se-se3680h) | 3.68 kW | 99.0% | | 10.0 kg | +1.5 pp efficiency | | [SolarEdge SE3680H (HD‑Wave, single phase)](https://comparepv.com/inverter/solaredge-solaredge-se3680h-hd-wave-single-phase) | 3.68 kW | 98.8% | | 7.8 kg | +1.3 pp efficiency, 2.2 kg lighter | | [Sungrow SG3.6RS](https://comparepv.com/inverter/sungrow-sg3-6rs) | 3.68 kW | 97.0% | 2 | 10.0 kg | -0.5 pp efficiency | --- Source: https://comparepv.com/inverter/sofar-solar-sofar-3-6ktlm-g3