--- title: "Growatt 750-S Grid-tie Inverter: Specs & Datasheet | ComparePV" description: "Growatt 750-S 0.75 kW grid-tie inverter. Specs: 96.0% European efficiency, 1 MPPT, 550 V max DC input, 6.4 kg, 5 yrs warranty." source: "https://comparepv.com/inverter/growatt-growatt-750-s" updated: 2026-01-16 --- # Growatt 750-S ## Identity - **Manufacturer:** Growatt - **Model:** Growatt 750-S - **Series:** Growatt 750~3000-S - **Rated AC power:** 0.75 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 | 96.0% | 97.0% | Weak - bottom 6% | 103 | | MPPT trackers | 1 | 1 | Typical | 43 | | Max DC input voltage | 550 V | 550 V | Typical | 41 | | Weight per kW | 8.5 | 4.0 | Weak - bottom 4% | 155 | | Warranty | 5 yrs | 5 yrs | Typical | 14 | ## Specification ### AC output - **Rated AC power:** 0.75 kW - **Phases:** Single-phase - **Nominal AC voltage:** 230 V - **Max AC current:** 3.3 A - **Power factor:** 0.8 leading...0.8 lagging - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC input power:** 0.97 kW - **Max DC voltage:** 550 V - **MPPT voltage range:** 50 to 550 V - **Start-up voltage:** 50 V - **MPPT trackers:** 1 - **Max input current per MPPT:** 13.0 A ### Efficiency - **European efficiency:** 96.0 % - **Max efficiency:** 97.2 % ### Physical - **Dimensions:** 299 × 271 × 141 mm - **Weight:** 6.4 kg - **Enclosure:** IP65 - **Cooling:** natural - **Noise:** 25 dB - **Operating temperature:** -25 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 2000 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Ethernet, Display - **Protocols:** RS232, RF, Wi-Fi, LAN, GPRS - **Protection:** DC switch, Surge protection ### Warranty and certificates - **Warranty:** 5 years - **Certifications:** CE, VDE 0126-1-1, IEC 62109, G83, AS4777, AS/NZS 3100, CEI0-21, VDE-AR-N4105, EN50438, CQC, UTE C 15-712, IEC 61683, IEC 60068, IEC 61727, IEC 62116, INMETRO ### Pros - **European efficiency: 97.0-97.3%** - The series achieves European efficiency, weighted at 97.0% (for the 750-S model) to 97.3% (for the 3000-S model), with a peak efficiency of 97.6%, placing it among the top performers in the 0.75-3 kW segment of grid-connected small inverters. This translates to a significantly higher annual energy yield in Poland's climate. - **Global leader in the residential segment** - Growatt confirmed its position as the leading provider of residential inverters globally in 2024 (according to S&P Global Commodity Insights), which means an extensive distribution and service network in Poland, as well as ongoing technical support. - **Compact, transformerless design - approximately 2.84 kg** - With a weight close to 2.84 kg and a wireless, transformer-less design, the product is easy to install individually, reduces installation time, and is particularly useful for roofs that are difficult to access or have limited load-bearing capacity. - **Wide MPPT range: 70-550 V DC** - The ability to track a DC voltage range of 70-550 V with an MPPT efficiency of 99.5% allows for flexible configuration of strings from different panel series, while maintaining high power output under variable solar conditions typical of Polish weather. - **Monitoring through ShineServer and the mobile app** - The inverter supports both WiFi and Ethernet modules (sold as accessories), enabling remote monitoring of production and diagnostics via the ShineServer platform without any additional subscription fees. ### Cons - **The product line has been discontinued.** - The 750~3000-S series is no longer actively manufactured (and is not currently available on growatt.com). This means that new devices in this series are limited in availability, and there is an increased risk of difficulty in obtaining replacements and after-sales service support once the warranty expires. - **The standard warranty is only 5 years.** - The standard factory warranty is 5 years (extendable to 10 years for an additional fee). Newer, competitive series in the same power range - such as the SMA Sunny Boy 1.5-6.0 or Fronius Primo GEN24 - offer a 5-10 year warranty as standard, without any additional costs. - **Not classified as a Tier 1 bankable entity (BNEF)** - Growatt is not listed on the BNEF Tier 1 Power Inverter Manufacturers list (as of 2026), which could be a formal requirement that limits its use in projects financed by banks that require this criterion. However, in typical small-scale residential installations up to 3 kW, this has minimal practical significance. ## About this series Growatt 750-30 0-3000-S series are compact **grid-tie (on-grid)** inverters for small home installations, where reliable operation and fast installation are key. This is a good choice when the roof has limited space, and the string layout is simple - typically featuring a single independent MPPT track, which automatically follows the maximum power point and helps maintain energy yield under varying sunlight conditions. In practice, this means efficiently utilizing energy from the modules even when the roof conditions are not ideal. High **European efficiency** translates to better real-world, year-round performance in Poland, not just under laboratory conditions. A plus is **monitoring** via the Growatt platform and app, as well as the option to choose communication (e.g., Wi-Fi modules, Ethernet, or other accessories), which facilitates remote diagnostics. This series is not hybrid, so **it does not cooperate directly with energy storage systems** - it is designed for grid-connected operation. Depending on the version, required certificates for European markets are available, along with the standard manufacturer’s warranty, with an option for extension. ## Questions ### What is the warranty on the Growatt 750~3000-S inverter? The Growatt 750~3000-S series comes with a standard 5-year manufacturer's warranty. Following device registration and completion of the required formalities with the distributor, the coverage can be extended to a total of 10 years. This is a reasonable level of protection given the price class of these units, although it is worth noting that Growatt is not considered a Tier 1 manufacturer. ### Can the Growatt 750~3000-S inverter be connected to a battery energy storage system? No, the Growatt 750~3000-S series consists exclusively of on-grid inverters. These units have no battery output and no hybrid functionality, meaning they cannot directly interface with any energy storage system. If you plan to add battery storage to your installation, you will need a separate hybrid inverter or a dedicated battery charging system. ### What is the efficiency of the Growatt 3000-S inverter, and what does that mean in practice? The Growatt 3000-S achieves a maximum efficiency of 97.2-97.6%. Its high European efficiency rating reflects better real-world performance across a full annual operating cycle in Poland, where solar irradiance is variable. In practice, this translates to lower conversion losses under the partial cloud cover typical of the local climate, not only under full-sun conditions. ### How many MPPT inputs does the Growatt 750~3000-S have, and when is that sufficient? The Growatt 750~3000-S series features a single independent MPPT input. This means all modules in the array must face the same orientation and operate under similar irradiance conditions. It is a perfectly adequate solution for a simple, single-plane roof with no shading. For roofs with multiple orientations or partial shading, an inverter with two MPPT inputs would be the more appropriate choice. ### How can I remotely monitor the Growatt 750~3000-S inverter? A Wi-Fi or Ethernet communication module can be added to the inverter (sold separately or included as part of a bundle, depending on the distributor). Once connected, the device registers on the Growatt ShineServer platform, and production data becomes accessible through the Growatt mobile app. This enables remote monitoring of energy yields and early detection of potential issues without requiring an on-site service visit. ### Will the Growatt 750~3000-S inverter perform reliably during Polish winters? Yes, the Growatt 750~3000-S series operates across a temperature range of -25°C to +60°C, which is fully adequate for Polish winter conditions. The IP65 protection rating ensures dust-tight and rain-resistant sealing, making outdoor installation viable. The transformerless design minimizes thermal losses and allows the inverter to start up efficiently even at low ambient temperatures. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/5d0c4a23a1de7-d9b69547404d.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Growatt MIC 750TL-X](https://comparepv.com/inverter/growatt-mic-750tl-x) | 0.75 kW | 96.5% | 1 | 6.0 kg | +0.5 pp efficiency | | [Growatt MIC 750TL-X2](https://comparepv.com/inverter/growatt-mic-750tl-x2) | 0.75 kW | 96.5% | 1 | 6.0 kg | +0.5 pp efficiency | | [Growatt MIC 800TL-X2](https://comparepv.com/inverter/growatt-mic-800tl-x2) | 0.8 kW | 96.5% | 1 | 6.0 kg | +0.5 pp efficiency | | [GoodWe GW700-XS](https://comparepv.com/inverter/goodwe-gw700-xs) | 0.7 kW | 96.0% | 1 | 5.8 kg | Similar on paper | | [Ginlong Solis S6-GR1P0.7K-M](https://comparepv.com/inverter/ginlong-solis-s6-gr1p0-7k-m) | 0.7 kW | 95.3% | 1 | 7.7 kg | -0.7 pp efficiency, 1.3 kg heavier | | [Growatt MIC 600TL-X2](https://comparepv.com/inverter/growatt-mic-600tl-x2) | 0.6 kW | 95.5% | 1 | 6.0 kg | -0.2 kW, -0.5 pp efficiency | --- Source: https://comparepv.com/inverter/growatt-growatt-750-s