--- title: "Fronius Symo 15.0-3 480 Grid-tie Inverter: Specs & Prices | ComparePV" description: "Fronius Symo 15.0-3 480 15 kW grid-tie inverter: 1 shop offer from 4 997 $. Specs: 1000 V max DC input, 43.4 kg, 10 yrs warranty." source: "https://comparepv.com/inverter/fronius-international-fronius-symo-15-0-3-480" updated: 2026-10-11 --- # Fronius Symo 15.0-3 480 ## Identity - **Manufacturer:** Fronius International - **Model:** Fronius Symo 15.0-3 480 - **Series:** Fronius Symo - **Rated AC power:** 15 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 | | --- | --- | --- | --- | --- | --- | | [ussolarsupplier.com](https://comparepv.com/go/339181) | United States | 4 997 $ net | 333.24 $/kW | Not stated | Last read 11 Oct 06:59 | ## 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% | | | | MPPT trackers | - | 2 | | | | Max DC input voltage | 1000 V | 1000 V | Typical | 101 | | Weight per kW | 2.9 | 1.6 | Weak - bottom 10% | 201 | | Warranty | 10 yrs | 5 yrs | Strong - top 21% | 5 | ## Specification ### AC output - **Rated AC power:** 15 kW - **Max apparent power:** 14.99 kVA - **Phases:** Three-phase - **Max AC current:** 18.0 A - **Grid frequency:** 60 Hz - **Power factor:** 0-1 ind./cap. ### PV input - **Max DC voltage:** 1000 V - **Start-up voltage:** 200 V ### Efficiency - **Max efficiency:** 98.0 % - **CEC efficiency:** 97.0 % ### Physical - **Dimensions:** 724 × 511 × 226 mm - **Weight:** 43.4 kg - **Enclosure:** NEMA 4X - **Cooling:** forced-air - **Operating temperature:** -40 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 3400 m ### Connectivity and protection - **Interfaces:** Wi-Fi, Ethernet - **Protocols:** Fronius Solar Net (RS422), SunSpec Modbus TCP, JSON, SunSpec Modbus RTU - **Protection:** AFCI, DC switch ### Warranty and certificates - **Warranty:** 10 years - **Certifications:** UL 1741-2010 Second Edition (incl. UL1741 Supplement SA 2016-09 for California Rule 21), UL1998 (for functions: AFCI, RCMU and isolation monitoring), IEEE 1547-2003, IEEE 1547a-2014, IEEE 1547.1-2003, ANSI/IEEE C62.41, FCC Part 15 A & B, NEC 2017 Article 690, C22.2 No. 107.1-16, UL1699B Issue 2-2013, CSA TIL M-07 Issue 1-2013 ### Pros - **Dual MPPT + Dynamic Peak Manager** - Two independent MPPT (Maximum Power Point Tracking) controllers, combined with the Dynamic Peak Manager algorithm, enable effective management of east-west oriented installations and minimize losses due to partial shading. In practice, the difference compared to single MPPT inverters can range from 3-8% in suboptimal exposure conditions. - **Low failure rate - 0.2%** - Independent service data (including SolarQuotes.com.au) indicates that the Fronius Symo series has a failure rate of approximately 0.2%, placing it among the most reliable three-phase inverters, alongside Huawei SUN2000. The modular SnapINverter design allows for component replacement without replacing the entire unit, reducing installation downtime. - **European efficiency ~97.6%** - The European (EU-eta) efficiency level of approximately 97.6% accurately reflects the actual working conditions in Poland (variable solar irradiance, frequent partial shading). This value is higher than older mid-tier series, although slightly lower than Huawei SUN2000-10KTL-M1 (98.2%) and comparable to SMA Tripower (~97.8%). - **Comprehensive Solar.web monitoring** - Standard integration with the Fronius Solar.web platform via WiFi or Ethernet, the Modbus TCP interface, and the ability to dynamically manage grid connection (meter interface) make the Symo one of the most well-connected three-phase string inverters - without the need to purchase additional communication gateways. - **The SuperFlex flexible design** - The SuperFlex design allows for asymmetrical loading of MPPT (Maximum Power Point Tracking) systems and a wide range of DC input voltages, which simplifies the design of installations on rooftops with varying inclines and orientations. This reduces the need for power optimizers in typical commercial installations. ### Cons - **Series cleaned by GEN24** - The original Fronius Symo is gradually being replaced by the GEN24 and GEN24 Plus series (with an extended launch in November 2024). The availability of new devices from the classic Symo series is limited among European distributors, which may make it difficult to expand existing installations with identical units within a 2-3-year timeframe. - **Lack of hybrid functionality** - The Symo series is exclusively a grid-tie inverter - integration with a battery storage system requires a separate hybrid inverter or AC-coupled system (e.g., BYD + additional inverter). Competitors such as Huawei SUN2000-10KTL-M1 or SMA Sunny Tripower Smart Energy offer ready-made DC battery support within the same power class. - **The price is higher than that of Tier 1 Asian products.** - Production in Austria results in a price that is significantly higher than comparable three-phase inverters from Huawei or Sungrow (the difference is estimated to be 15-25% at the same power class). For residential installations with power outputs of 10-20 kW, where the installer's margin is under pressure, the purchase cost may be a deterrent to choosing this series. ## About this series The Fronius Symo series comprises three-phase grid-tie inverters designed for flexible PV installations - ranging from larger homes to commercial properties. What sets them apart is the **SuperFlex construction**, which simplifies design when dealing with varying roof orientations and unequal string operating conditions. Standardly equipped with **two independent MPPTs**, they efficiently handle two separate module arrays (e.g., east-west) and minimize energy losses during partial shading. Additionally, the **Dynamic Peak Manager** assists by intelligently tracking the peak power point, even when module characteristics are disturbed by shade. In practice, the high European efficiency translates to better energy production under typical operating conditions in Poland, not just laboratory maximums. A further advantage is **monitoring and communication**: integration with Fronius Solar.web, the option to connect via WiFi or Ethernet, and comprehensive interfaces for automation integration. This is not a hybrid series, so energy storage requires separate solutions. Extended warranty is available upon registration, and the equipment meets popular grid connection and safety standards. ## Questions ### Is the Fronius Symo inverter suitable for a two-panel (east-west) roof installation? Yes, the Fronius Symo is particularly well-suited for an east-west orientation. The two independent MPPT trackers allow both strings to be connected to separate inputs and optimized independently. This allows the inverter to maximize the output from each string, rather than averaging the results from both orientations. The SuperFlex design further simplifies the design process when dealing with uneven module groups. ### What is the warranty on the Fronius Symo inverter, and is it possible to extend it? Standardly, Fronius offers a 5-year warranty, but after free registration of the equipment on the Solar.web platform, the warranty is extended to 10 years in total (5 years of Fronius Plus + 5 additional years). For inverters with a power of up to 10 kW installed and registered after January 1, 2022, the 10-year protection is available without additional cost. This is one of the most competitive warranty offers on the market in this category of equipment. ### What is the Dynamic Peak Manager in Fronius Symo, and does it actually help with shading issues? Dynamic Peak Manager is an algorithm for tracking the power point, which operates actively in Fronius Symo even when the module characteristics are impaired by shading or dirt. A standard MPPT (Maximum Power Point Tracking) system can get stuck in a local maximum and lose efficiency; DPM (Dynamic Peak Manager) scans a wider range of voltages and seeks the global optimum. In practice, with partial shading, the installation can gain several percentage points of additional production over the course of a year. ### Does the Fronius Symo support energy storage and function as a hybrid inverter? No, the Fronius Symo is a purely grid-tied inverter and does not have built-in battery management. If you require energy storage, you will need to install a separate battery system or replace the inverter with a hybrid model, such as the Fronius GEN24 Plus. The Symo is ideally suited for installations that are solely focused on cooperating with the grid and selling or receiving energy. ### How does the Fronius Symo inverter monitoring system work? The Fronius Symo features an integrated datalogger and WiFi and Ethernet interfaces, allowing it to connect to the Fronius Solar.web platform. The system owner can monitor current production, historical data, and any potential alarms through a web browser or mobile app. It also offers Modbus and Sunspec interfaces for integration with building automation systems, which is beneficial in commercial properties. ### Are Fronius Symo inverters still available for sale? The Fronius Symo (SnapInverter) series, with power ratings of 3.0-8.2 kW, will be discontinued at the end of 2024. Models with higher power ratings may still be available from distributors as stock items, but Fronius recommends the Symo Advanced series (for commercial applications) and GEN24 Plus inverters for installations with the option to expand with energy storage. It is advisable to check availability with Polish distributors before making a purchase. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/se-ds-fronius-symo-en-us-a58f2058bec0.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Fronius Symo Advanced 15.0-3 480](https://comparepv.com/inverter/fronius-international-fronius-symo-advanced-15-0-3-480) | 15 kW | | 2 | 43.4 kg | Similar on paper | | [Growatt MID 15KTL3-X](https://comparepv.com/inverter/growatt-mid-15ktl3-x) | 15 kW | 98.6% | 2 | 23.0 kg | 20.4 kg lighter | | [Sungrow SG15KTL-M](https://comparepv.com/inverter/sungrow-sg15ktl-m) | 15 kW | 98.3% | 2 | 24.0 kg | 19.4 kg lighter | | [Huawei SUN2000-15KTL-M2](https://comparepv.com/inverter/huawei-sun2000-15ktl-m2) | 15 kW | 98.3% | 2 | 25.0 kg | 18.4 kg lighter | | [Huawei SUN2000-15KTL-M0](https://comparepv.com/inverter/huawei-sun2000-15ktl-m0) | 15 kW | 98.3% | 2 | 25.0 kg | 18.4 kg lighter | | [Growatt MOD 15KTL3-X](https://comparepv.com/inverter/growatt-mod-15ktl3-x) | 15 kW | 98.2% | 2 | 16.0 kg | 27.4 kg lighter | | [Growatt MOD 15KTL3-X2(Pro)](https://comparepv.com/inverter/growatt-mod-15ktl3-x2-pro) | 15 kW | 98.2% | 2 | 15.6 kg | 27.8 kg lighter | | [SOFAR 15KTLX-G3](https://comparepv.com/inverter/sofar-solar-sofar-15ktlx-g3) | 15 kW | 98.2% | 2 | 20.0 kg | 23.4 kg lighter | --- Source: https://comparepv.com/inverter/fronius-international-fronius-symo-15-0-3-480