--- title: "GoodWe GW15KN-DT Grid-tie Inverter: Specs & Datasheet | ComparePV" description: "GoodWe GW15KN-DT 15 kW grid-tie inverter. Specs: 98.0% European efficiency, 2 MPPT, 1000 V max DC input, 26.0 kg." source: "https://comparepv.com/inverter/goodwe-gw15kn-dt" updated: 2026-01-16 --- # GoodWe GW15KN-DT ## Identity - **Manufacturer:** GoodWe - **Model:** GW15KN-DT - **Series:** GW-DT - **Rated AC power:** 15 kW - **Type:** Grid-tie - **Phases:** Three-phase ## How it compares Compared against 227 inverters from 12 to 30 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 98.0% | 98.0% | Typical | 77 | | MPPT trackers | 2 | 2 | Typical | 53 | | Max DC input voltage | 1000 V | 1000 V | Typical | 101 | | Weight per kW | 1.7 | 1.6 | Typical | 127 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 15 kW - **Max apparent power:** 16.50 kVA - **Phases:** Three-phase - **Nominal AC voltage:** 400 V - **Max AC current:** 24.0 A - **Power factor:** Adjustable from 0.8 leading to 0.8 lagging ### PV input - **Max DC input power:** 19.50 kW - **Max DC voltage:** 1000 V - **MPPT trackers:** 2 ### Efficiency - **European efficiency:** 98.0 % - **Max efficiency:** 98.3 % ### Physical - **Dimensions:** 455 × 516 × 192 mm - **Weight:** 26.0 kg - **Enclosure:** IP65 - **Operating temperature:** -25 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Display - **Protocols:** RS485, WiFi - **Protection:** Surge protection ### Warranty and certificates - **Certifications:** VDE0126-1-1, VDE-AR-N 4105, AS4777.2, EN50438(PL), EN50438(SW), EN50438(IR), G83, ERDF-NOI-RES\_13E, IEC61727, IEC62116, CEI 0-21, IEC62109-1&2, EN61000-6-1, EN61000-6-2, EN61000-6-3, EN61000-6-4, EN61000-4-16, EN61000-4-18, EN61000-4-29 ### Pros - **Tier 1, according to BloombergNEF (Q2 2025)** - GoodWe is listed on BNEF's Tier 1 Power Inverter Manufacturer list for Q2 2025, with over 100 GW of installed capacity worldwide. This status signifies acceptance by commercial banks for non-recourse projects and translates into assurance of service and availability of spare parts over a 10+ year period. - **Two independent MPPT (maximum power point tracking) systems** - The GW-DT series features two separate power tracking points, which allows for independent optimization of strings in areas with different orientations or partial shading of a single string - a real benefit in typical Polish rooftop installations with multiple strings. - **European efficiency: 97.6% / maximum 98.3%** - The measured European efficiency of 97.6% (for the GW4K-DT\_G2 and GW8K-DT\_G2 models) is a strong result for this price range. The maximum efficiency of 98.3% confirms that the performance is not limited by conversion losses under typical operating conditions in Poland. - **Free SEMS monitoring + built-in WiFi** - The SEMS (Smart Energy Management System) platform is available without a subscription, with a built-in WiFi module in each device - unlike, for example, SMA, where a communication sensor/gate is often an additional cost. Integration with RS485 and LAN is also available in selected configurations. - **Wide power range: 4-25 kW (three-phase)** - The series includes models ranging from 4 kW to 25 kW within a single product ecosystem, allowing the use of the same monitoring software and service procedures for both prosumer installations (approximately 5-15 kW) and small commercial facilities - simplifying selection and maintenance for installers. ### Cons - **The standard warranty is only 5 years.** - The standard manufacturer warranty is 5 years, while SMA (Sunny Tripower) and Fronius (Symo Gen24) typically offer a standard 10-year warranty on the European market without any additional cost. GoodWe's extended warranty of 10 years is possible, but requires an additional payment, which increases the total installation cost by several hundred zlotys. - **Lack of support for energy storage facilities** - The GW-DT series consists of pure grid-tie inverters without the ability to connect to batteries. If a decision is made to expand the installation with a battery, the inverter needs to be replaced with a hybrid model (e.g., GoodWe ET/ES), which incurs additional costs and generates waste - a significant limitation given the growing interest in energy storage in Poland. ## About this series The GoodWe GW-DT series are three-phase grid-tie inverters designed for reliable operation in residential and small to medium-sized commercial installations. The key advantage is the dual MPPT, allowing independent management of two string configurations - a significant benefit for roofs with different orientations, multiple pitches, or partial shading, as the system better optimizes energy yield under varying conditions. High European efficiency is also practical - meaning performance in typical operating conditions encountered in Poland, translating to more predictable energy production throughout the season, not just at an ideal laboratory point. Daily monitoring is supported by an extensive system in SEMS (application and portal), with communication via WiFi, and depending on the configuration, also via LAN or RS485. These are not hybrid inverters, so they are not intended for direct use with energy storage systems. They typically include the required certifications and compliance with grid connection standards, as well as the manufacturer's standard warranty. ## Questions ### Is the GoodWe GW-DT inverter suitable for installations with solar panels on two roof sections? Yes, the GW-DT series features two independent MPPT (Maximum Power Point Tracking) controllers with a voltage range of 180 V to 850 V each. This means that you can connect two separate strings of panels with different orientations (e.g., south and east-facing) or at different tilt angles. Each MPPT optimizes the performance of its string independently, which minimizes losses due to partial shading or varying sunlight conditions. ### What capabilities does the GoodWe GW-DT series offer, and what types of installations is it designed for? The GW-DT series includes three-phase network inverters with a power range from 4 kW to 15 kW (models: GW4K-DT, GW5K-DT, GW6K-DT, GW8K-DT, GW10KT-DT, GW12KT-DT, GW15KT-DT). This range is suitable for homes with three-phase connections and small to medium-sized commercial buildings. Three-phase operation evenly distributes the load on the network, making it easier to meet the connection requirements set by the utility provider. ### Can the GoodWe GW-DT inverter be connected to a battery storage system? No. The GW-DT is a grid-tie inverter, not a hybrid one. It does not have a built-in battery charger controller and does not support direct connection to a battery storage system. If you are interested in the possibility of expanding your system with a battery, you should consider the GoodWe ET or ES series, which are designed as hybrid inverters. ### What is the warranty on the GoodWe GW-DT inverter, and is it possible to extend it? The standard manufacturer's warranty is 5 years. GoodWe offers optional extended warranties of up to 10, 15, or even 25 years, at an additional cost. For example, an extension to a total of 10 years costs approximately 1499 zł. GoodWe is a Tier 1 manufacturer with a global service network, which enhances the feasibility of enforcing warranty terms throughout the declared period. ### What does the monitoring of a GoodWe GW-DT inverter system look like, and do I need any additional devices? The GW-DT inverter has a built-in Wi-Fi module that allows connection to the SEMS (Smart Energy Management System) platform without additional devices. After pairing with your home network, you gain access to a mobile app and a web portal with real-time production data, historical information, and alerts. Optional communication via LAN or RS485 is also available, for example, to integrate with BMS systems or installer monitoring. ### What is the performance of the GoodWe GW-DT inverters in Europe, and what does this mean for operating conditions in Poland? The European efficiency of the GW-DT series is approximately 97.6%. This figure is calculated as a weighted average for different load levels, which reflects the actual operating conditions in a temperate climate, such as that found in Poland. In practice, this means that the inverter efficiently converts energy not only during sunny afternoons, but also under partially cloudy conditions, typical of Polish autumns and springs. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/5d37ab6446a58-241b8208092e.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Growatt MID 15KTL3-X](https://comparepv.com/inverter/growatt-mid-15ktl3-x) | 15 kW | 98.6% | 2 | 23.0 kg | +0.6 pp efficiency, 3.0 kg lighter | | [Sungrow SG15KTL-M](https://comparepv.com/inverter/sungrow-sg15ktl-m) | 15 kW | 98.3% | 2 | 24.0 kg | 2.0 kg lighter | | [Huawei SUN2000-15KTL-M2](https://comparepv.com/inverter/huawei-sun2000-15ktl-m2) | 15 kW | 98.3% | 2 | 25.0 kg | 1.0 kg lighter | | [Huawei SUN2000-15KTL-M0](https://comparepv.com/inverter/huawei-sun2000-15ktl-m0) | 15 kW | 98.3% | 2 | 25.0 kg | 1.0 kg lighter | | [Growatt MOD 15KTL3-X](https://comparepv.com/inverter/growatt-mod-15ktl3-x) | 15 kW | 98.2% | 2 | 16.0 kg | 10.0 kg lighter | | [Growatt MOD 15KTL3-X2(Pro)](https://comparepv.com/inverter/growatt-mod-15ktl3-x2-pro) | 15 kW | 98.2% | 2 | 15.6 kg | 10.4 kg lighter | | [SOFAR 15KTLX-G3](https://comparepv.com/inverter/sofar-solar-sofar-15ktlx-g3) | 15 kW | 98.2% | 2 | 20.0 kg | 6.0 kg lighter | | [Fronius Verto 15.0](https://comparepv.com/inverter/fronius-international-fronius-verto-15-0) | 15 kW | 98.2% | 4 | 35.2 kg | +2 MPPT, 9.2 kg heavier | --- Source: https://comparepv.com/inverter/goodwe-gw15kn-dt