--- title: "Sungrow SG3.0RS-L Grid-tie Inverter: Specs & Datasheet | ComparePV" description: "Sungrow SG3.0RS-L 3 kW grid-tie inverter. Specs: 97.3% European efficiency, 1 MPPT, 600 V max DC input, 6.0 kg." source: "https://comparepv.com/inverter/sungrow-sg3-0rs-l" updated: 2026-01-16 --- # Sungrow SG3.0RS-L ## Identity - **Manufacturer:** Sungrow - **Model:** SG3.0RS-L - **Series:** SG3.0RS-L - **Rated AC power:** 3 kW - **Type:** Grid-tie - **Phases:** Single-phase ## How it compares Compared against 164 inverters up to 3 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 97.3% | 97.0% | Strong - top 19% | 18 | | MPPT trackers | 1 | 1 | Typical | 43 | | Max DC input voltage | 600 V | 550 V | Strong - top 19% | 13 | | Weight per kW | 2.0 | 4.0 | Strong - top 3% | 5 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 3 kW - **Max apparent power:** 3.00 kVA - **Phases:** Single-phase - **Nominal AC voltage:** 230 V - **Max AC current:** 13.7 A - **Grid frequency:** 50 Hz - **Power factor:** > 0.99 / 0.8 leading - 0.8 lagging - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC input power:** 4.50 kW - **Max DC voltage:** 600 V - **MPPT voltage range:** 40 to 560 V - **Start-up voltage:** 50 V - **MPPT trackers:** 1 - **Max input current per MPPT:** 16.0 A - **Max short-circuit current per MPPT:** 20.0 A ### Efficiency - **European efficiency:** 97.3 % - **Max efficiency:** 97.8 % ### Physical - **Dimensions:** 263 × 360 × 126 mm - **Weight:** 6.0 kg - **Enclosure:** IP65 - **Cooling:** natural - **Operating temperature:** -25 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Display - **Protocols:** WLAN - **Protection:** DC switch, Surge protection ### Warranty and certificates - **Certifications:** ABNT NBR 16150, PORTARIA Nº 140, DE 21 DE MARÇO DE 2022, IEC/EN 62109-1/2, IEC 61000-6-1/2/3/4, IEC 62116, IEC 61683, IEC 61727, IEC 60068-2-1/2/14/30/64/27, IEC 60529, EN 50530, IS 16169, IS 16221 (BIS) ### Pros - **Tier-1 Bankable Manufacturer (BNEF)** - Sungrow is consistently rated by BloombergNEF as a Tier-1 bankable manufacturer. For loan- or lease-financed installations this translates into smoother access to project financing. The company has been operating since 1997 and maintains a local office in Poland (Sungrow Polska Sp. z o.o., Warsaw, since Q2 2023), shortening the service chain. - **Built-in Type II SPD on Both DC and AC Sides** - Type II surge protective devices (SPDs) on both the DC and AC sides are factory-integrated at no additional cost. On the competing Fronius Primo 3.0-1, the AC SPD module is a paid option (~150-200 PLN), which meaningfully increases system BoS cost at scale. - **Ultra-Low Weight ~6 kg (A4 Footprint)** - The V12 datasheet confirms a weight of approx. 6 kg and an enclosure comparable in size to an A4 sheet. By comparison, the Huawei SUN2000-3KTL-L1 weighs approx. 9 kg. The ~3 kg difference simplifies single-person installation and reduces the risk of damage during rooftop work. - **Free iSolarCloud Monitoring (Wi-Fi / LAN / RS485)** - The iSolarCloud platform provides 5-minute data resolution with access to MPPT curves, voltage, and current readings; the interface is available in Polish. Wi-Fi and Ethernet are supported as standard. For reference, SolarEdge charges for monitoring beyond 25 years. - **Wide MPPT Range 40-560 V with Low Start-Up Threshold** - The 40-560 V input range at a maximum DC voltage of 600 V allows the inverter to operate under very low irradiance conditions (early morning, overcast days). This is particularly relevant in the Polish climate, where more than 40% of annual irradiation occurs at irradiance levels below 400 W/m². ### Cons - **Single MPPT Only (vs. Dual MPPT in SG3.0RS)** - The SG3.0RS-L variant features a single MPPT tracker, whereas the standard SG3.0RS offers two independent MPPTs. For installations with modules on two roof planes of different orientations, or under partial shading conditions, annual energy yield losses relative to the dual-MPPT version can reach 3-8%. - **Regional Variant - Originally Designed for the Indian Market** - The V12 datasheet (June 2023) is labeled as the "India" version. Prior to installation in Poland, the distributor should confirm compliance with Polish DSO grid-connection requirements (e.g., the NC RfG regulation) and the validity of applicable European certifications, as grid-code specifications may differ from those of the standard EMEA SG3.0RS variant. ## About this series The Sungrow SG3.0RS-L series are single-phase grid-tie inverters designed for domestic PV installations, where stable energy yield and rapid system diagnostics are key. What sets them apart is their **wide MPPT operating range** and low start-up threshold, enabling more efficient energy harvesting even under weaker sunlight. The use of **two independent MPPTs** facilitates production optimization for different roof orientations or partial shading-installers can flexibly select string configurations and minimize energy losses. In practice, high **European efficiency** is also crucial, meaning performance under conditions typical for Poland-more energy reaches the grid annually, with less lost as inefficiency. For daily monitoring, the series offers **monitoring and communication** via the iSolarCloud platform, with convenient viewing in the app, and support for popular interfaces (WiFi, Ethernet, RS485). Built-in overvoltage protections (DC and AC) and IP65 rating facilitate indoor and outdoor mounting, while the standard manufacturer's warranty supports long-term operation. This solution is ideal for prosumers and small commercial properties that don't require hybrid operation with energy storage. ## Questions ### What is the warranty on the Sungrow SG3.0RS-L inverter and can it be extended? The standard manufacturer warranty on the Sungrow SG3.0RS-L inverter is 10 years. Sungrow offers the option to purchase an extended warranty providing up to 25 years of total coverage. As a Bloomberg NEF Tier 1 manufacturer, Sungrow maintains a stable service infrastructure and spare parts availability in the Polish market. ### Is the Sungrow SG3.0RS-L inverter suitable for a home with a roof that has two differently oriented slopes? Yes, two independent MPPT inputs (40-560 V range each) allow strings of panels facing different compass directions or installed at different tilt angles to be connected separately. Each string is tracked independently, so shading or differing irradiance on one roof slope does not reduce output from the other. This is a practical advantage for typical Polish dual-pitch roofs. ### What is the efficiency of the Sungrow SG3.0RS-L inverter and does it matter for annual energy production? The inverter's maximum efficiency is approximately 97.9%, and its high European efficiency rating translates into lower losses under the variable irradiance conditions typical of Poland. In practice, this means that for a 3 kW system, several tens of kilowatt-hours more per year are delivered to the grid or used on-site rather than being dissipated as heat. ### How does monitoring of the SG3.0RS-L inverter work and do I need any special hardware for it? The inverter integrates with the iSolarCloud platform, accessible via a web browser and a mobile app (Android and iOS). A Wi-Fi dongle is included in the package, enabling quick pairing with a home router. Ethernet and RS485 interfaces are also supported for installations that require a wired connection or integration with a building management system. ### Can the Sungrow SG3.0RS-L inverter be installed outdoors? Yes, the IP65 ingress protection rating shields the unit against dust and water jets, making mounting on an exterior building wall fully permissible. An additional advantage is C5 corrosion resistance, which is significant in locations exposed to high humidity or salt-laden air. The unit weighs only 10 kg, making installation straightforward for a single technician. ### What is the difference between the Sungrow SG3.0RS-L and the SG3.0RS model, and which one should I choose for a small residential installation? The RS-L designation indicates a variant adapted to specific market requirements - including a lower start-up voltage threshold and distinct regulatory certifications - whereas the SG3.0RS is the base version with broader distribution across Europe. For a typical 3 kW residential installation, both models offer dual MPPT tracking and iSolarCloud monitoring. It is worth consulting your distributor about current availability and grid-connection certifications for the Polish market, as these factors often determine which variant is the right choice. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/DS-20230616-SG30RS-L-Datasheet-V12-EN-India-4036e9bf0926.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [SolarEdge SE3000H (HD‑Wave, single phase)](https://comparepv.com/inverter/solaredge-solaredge-se3000h-hd-wave-single-phase) | 3 kW | 98.3% | | 7.8 kg | +1.0 pp efficiency, 1.8 kg heavier | | [Solis-3P3K-4G](https://comparepv.com/inverter/ginlong-solis-solis-3p3k-4g) | 3 kW | 97.8% | 2 | 17.3 kg | +0.5 pp efficiency, +1 MPPT, 11.3 kg heavier | | [Ginlong Solis S6-GR3P-3K02-NV-ND](https://comparepv.com/inverter/ginlong-solis-s6-gr3p-3k02-nv-nd) | 3 kW | 97.7% | 2 | 14.7 kg | +0.4 pp efficiency, +1 MPPT, 8.7 kg heavier | | [Growatt MOD 3000TL3-X](https://comparepv.com/inverter/growatt-mod-3000tl3-x) | 3 kW | 97.5% | 2 | 12.5 kg | +1 MPPT, 6.5 kg heavier | | [Growatt MOD 3000TL3-X2 (Pro)](https://comparepv.com/inverter/growatt-mod-3000tl3-x2-pro) | 3 kW | 97.5% | 2 | 14.6 kg | +1 MPPT, 8.6 kg heavier | | [SOFAR 3.3KTLX-G3](https://comparepv.com/inverter/sofar-solar-sofar-3-3ktlx-g3) | 3 kW | 97.5% | 2 | 17.0 kg | +1 MPPT, 11.0 kg heavier | | [GoodWe GW3000-SS](https://comparepv.com/inverter/goodwe-gw3000-ss) | 3 kW | 97.4% | 1 | 12.0 kg | 6.0 kg heavier | | [Growatt 3000-S](https://comparepv.com/inverter/growatt-growatt-3000-s) | 3 kW | 97.3% | 1 | 9.1 kg | 3.1 kg heavier | --- Source: https://comparepv.com/inverter/sungrow-sg3-0rs-l