--- title: "GoodWe GW5K-DT Grid-tie Inverter: Specs & Prices | ComparePV" description: "GoodWe GW5K-DT 5 kW grid-tie inverter: 2 shop offers from 598.95 €. Specs: 97.6% European efficiency, 2 MPPT, 1000 V max DC input, 15.0 kg." source: "https://comparepv.com/inverter/goodwe-gw5k-dt" updated: 2026-10-11 --- # GoodWe GW5K-DT ## Identity - **Manufacturer:** GoodWe - **Model:** GW5K-DT - **Series:** SDT G2 - **Rated AC power:** 5 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 | | --- | --- | --- | --- | --- | --- | | [www.solar-outlet.nl](https://comparepv.com/go/111673) | Netherlands | 598.95 € incl. VAT | 119.79 €/kW | In stock | Last read 11 Oct 00:15 | | [Sklep Soltech](https://comparepv.com/go/6223) | Poland | 2 232.56 zł net | 446.51 zł/kW | Not stated | Last read 11 Oct 03:29 | ## 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 | 97.6% | 97.2% | Strong - top 17% | 39 | | MPPT trackers | 2 | 2 | Typical | 13 | | Max DC input voltage | 1000 V | 600 V | Strong - top 17% | 29 | | Weight per kW | 3.0 | 3.3 | Typical | 146 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 5 kW - **Max AC power:** 5.50 kW - **Max apparent power:** 5.50 kVA - **Phases:** Three-phase - **Nominal AC voltage:** 400 V - **Max AC current:** 8.0 A - **Grid frequency:** 50 Hz - **Power factor:** ~1 (Adjustable from 0.8 leading to 0.8 lagging) - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC voltage:** 1000 V - **MPPT voltage range:** 180 to 850 V - **Start-up voltage:** 160 V - **MPPT trackers:** 2 ### Efficiency - **European efficiency:** 97.6 % - **Max efficiency:** 98.2 % ### Physical - **Dimensions:** 433 × 354 × 147 mm - **Weight:** 15.0 kg - **Enclosure:** IP65 - **Cooling:** forced-air - **Operating temperature:** -30 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Ethernet, Display - **Protocols:** WiFi, RS485, LAN (optional), Modbus-RTU (SunSpec Compliant) - **Protection:** AFCI, DC switch, Surge protection ### Pros - **Maximum efficiency: 98.3-98.4%** - Models 4-15 kW achieve a maximum efficiency of 98.3%, while units 17-25 kW achieve 98.4% (according to official GoodWe datasheets). This places the series in the top quarter of three-phase string inverters, which, under Polish conditions (many hours of low sunlight), directly translates into higher annual production compared to models with efficiencies of 97.5-98.0%. - **High DC/AC ratio up to 150%** - The SDT G2 allows for DC side over-sizing up to 150% of the nominal AC power, with a 110% AC overload. This allows designers to select modules based on actual roof conditions (small surface area, unfavorable orientation) without the need to purchase a larger inverter - a key advantage for typical pitched roofs in Poland. - **Wide voltage range for MPPT (180-850 V / Vmax 1000 V)** - Two independent MPPT controllers cover a range of 180-850 V DC (up to 1000 V), allowing for flexible string length selection with modules from different manufacturers and in various configurations. Independent maximum power point tracking reduces losses under partial shading or with different orientations. - **Optional AFCI and IP65 rating** - The built-in AFCI (Arc-Fault Circuit Interruption) feature enhances fire safety for the installation - a requirement increasingly demanded by insurance companies and some commercial property managers. The IP65 enclosure provides complete protection against dust and rain when installed outdoors. - **GoodWe Tier 1 Bankable - extensive service network** - GoodWe is listed on BNEF's Tier 1 "Bankable" list, has its own R&D center, and a wide network of authorized service providers in Poland. The company has been operating since 2010, which reduces the risk of lacking after-sales support - a crucial factor given the 20-25-year lifespan of solar installations. ### Cons - **The standard warranty is only 5 years.** - The standard manufacturer's warranty for SDT G2 inverters is 5 years. Extending this to 10 years is possible only through the GoodWe PLUS+ program (certified installer) and involves additional costs and the requirement to register on the SEMS portal. In comparison, SMA and Fronius in this segment offer a 5-year warranty with clear extension paths that are not dependent on a partner program. - **Supports up to 2 MPPT across a power range of 4-25 kW** - This series does not offer a version with 3 or more MPPT (Maximum Power Point Tracking) systems. For roof installations with 3 or more orientations (e.g., a multi-pitched L-shaped roof), it is necessary to use power optimizers or a solution from a competitor (e.g., Huawei SUN2000 5-20KTL-M2 with 2 MPPT, but with finer string granularity), which increases the cost or complicates the project. ## About this series The GoodWe SDT G2 series are **three-phase grid-tie inverters** designed for home and small commercial installations, prioritizing high energy production and convenient service. In practice, their **compact design** facilitates installation, with solutions enhancing design flexibility - this inverter effectively handles DC overloading, allowing module selection tailored to your roof's actual conditions without 'strangling' the system. A noteworthy feature is the **dual MPPT**, which helps maximize energy harvest from different roof orientations or partial shading - independent power point tracking limits losses where a conventional setup would be less stable. High **European efficiency** translates to better performance in Poland's typical weather conditions, yielding more kWh annually, not just in ideal "laboratory" scenarios. Monitoring is supported by the SEMS ecosystem - communicating via WiFi or Ethernet (depending on configuration) and accessible via an app. Optional safety features like AFCI support compliance and installation protection, while warranty programs can extend product coverage. ## Questions ### Which types of systems is the GoodWe SDT G2 inverter suitable for, and what is its power range? The GoodWe SDT G2 series includes three-phase inverters with a power range of 4 to 25 kW (4-15 kW models for residential use, 17-25 kW models for small commercial and retail buildings). This device is grid-tied, meaning it operates solely in conjunction with the electrical grid. Its compact design, certified to IP65, allows for installation both indoors and outdoors. ### What is the warranty for the GoodWe SDT G2 inverter? The standard warranty, upon device registration on the SEMS portal, is 10 years. Without registration, the warranty period is 5 years. GoodWe also allows for the purchase of an extended warranty of up to 15 or 20 years through an authorized distributor - the condition is to submit the application no later than 6 months after the initial installation or 12 months from the date of manufacture. ### What does a 150% over-sizing rating for the GoodWe SDT G2 series mean, and why is it important? An over-dimensioned DC system with a 150% capacity means that the total peak power of the panels connected to the inverter can exceed its nominal power by half. For a 10 kW inverter, it is possible to install modules with a total power of up to 15 kWp. In practice, this allows for the installation of more panels based on the actual roof exposure, and improves performance during morning, evening, and cloudy conditions, without risking damage to the device. ### How does the GoodWe SDT G2 inverter's monitoring system work, and is it a paid service? The SDT G2 communicates with the SEMS (Smart Energy Management System) platform via WiFi or Ethernet. The SEMS Portal mobile application is free and allows for real-time tracking of energy production, as well as viewing historical data and receiving error notifications. Registration in SEMS is also required to activate the 10-year warranty, making the connection to the grid a worthwhile investment. ### Does the GoodWe SDT G2 inverter have AFCI (Arc Fault Circuit Interrupter) protection, and what is its purpose in a residential PV system? Yes, the SDT G2 is equipped with an AFCI (Arc-Fault Circuit Interrupter) function, which detects dangerous arc faults in the DC circuit and immediately cuts off power. An electrical arc can occur due to a damaged cable or poor connection and can cause a fire. The AFCI provides an additional layer of safety, particularly important in residential buildings where PV cables run through the ceiling or attic. ### Is GoodWe a reliable manufacturer, and where does the SDT G2 series originate from? GoodWe is a Chinese manufacturer recognized as a Tier 1 company according to industry rankings, and is listed on the Shanghai Stock Exchange. The company has been supplying inverters to the European market for over a decade and holds the certifications required by Polish and EU regulations. The SDT G2 is manufactured in China, which is standard practice in the industry - the focus is on the quality of components and the availability of service, rather than the country of manufacture. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/314146486483334665c57-795899b81ddc.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [SolarEdge SE5000H (HD‑Wave, single phase)](https://comparepv.com/inverter/solaredge-solaredge-se5000h-hd-wave-single-phase) | 5 kW | 99.0% | | 9.0 kg | +1.4 pp efficiency, 6.0 kg lighter | | [SolarEdge EV Charging Single Phase Inverter SE5000H (aka H5000SE / SE5000H)](https://comparepv.com/inverter/solaredge-solaredge-ev-charging-single-phase-inverter-se5000h-aka-h5000se-se5000h) | 5 kW | 99.0% | | 11.4 kg | +1.4 pp efficiency, 3.6 kg lighter | | [Solis-3P5K-4G](https://comparepv.com/inverter/ginlong-solis-solis-3p5k-4g) | 5 kW | 97.8% | 2 | 18.0 kg | 3.0 kg heavier | | [Ginlong Solis S6-GR3P-5K02-NV-ND](https://comparepv.com/inverter/ginlong-solis-s6-gr3p-5k02-nv-nd) | 5 kW | 97.7% | 2 | 14.7 kg | Similar on paper | | [Growatt MOD 5000TL3-X](https://comparepv.com/inverter/growatt-mod-5000tl3-x) | 5 kW | 97.5% | 2 | 12.5 kg | 2.5 kg lighter | | [Growatt MIN 5000TL-X2 (Pro E)](https://comparepv.com/inverter/growatt-min-5000tl-x2-pro-e) | 5 kW | 97.5% | 1 | 10.8 kg | -1 MPPT, 4.2 kg lighter | | [Growatt MOD 5000TL3-X2 (Pro)](https://comparepv.com/inverter/growatt-mod-5000tl3-x2-pro) | 5 kW | 97.5% | 2 | 14.6 kg | Similar on paper | | [Growatt MIN 5000TL-X2 (Pro)](https://comparepv.com/inverter/growatt-min-5000tl-x2-pro) | 5 kW | 97.5% | 2 | 10.8 kg | 4.2 kg lighter | --- Source: https://comparepv.com/inverter/goodwe-gw5k-dt