--- title: "Solis-255K-EHV-5G-PLUS Grid-tie Inverter: Specs & Datasheet | ComparePV" description: "Solis-255K-EHV-5G-PLUS 255 kW grid-tie inverter. Specs: 98.8% European efficiency, 12 MPPT, 1500 V max DC input, 113.0 kg." source: "https://comparepv.com/inverter/ginlong-solis-solis-255k-ehv-5g-plus" updated: 2026-01-17 --- # Solis-255K-EHV-5G-PLUS ## Identity - **Manufacturer:** Ginlong Solis - **Model:** Solis-255K-EHV-5G-PLUS - **Series:** Solis-EHV-5G-PLUS - **Rated AC power:** 255 kW - **Type:** Grid-tie - **Phases:** Three-phase ## How it compares Compared against 95 inverters from 100 to 500 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 98.8% | 98.6% | Strong - top 21% | 5 | | MPPT trackers | 12 | 10 | Strong - top 14% | 3 | | Max DC input voltage | 1500 V | 1100 V | Strong - top 24% | 1 | | Weight per kW | 0.4 | 0.6 | Typical | 32 | | Warranty | - | 5 yrs | | | ## Specification ### AC output - **Rated AC power:** 255 kW - **Max apparent power:** 255.00 kVA - **Phases:** Three-phase - **Nominal AC voltage:** 800 V - **Max AC current:** 184.0 A - **Power factor:** 0.8 leading - 0.8 lagging - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC voltage:** 1500 V - **MPPT voltage range:** 480 to 1500 V - **Start-up voltage:** 500 V - **MPPT trackers:** 12 - **Max input current per MPPT:** 30.0 A - **Max short-circuit current per MPPT:** 50.0 A ### Efficiency - **European efficiency:** 98.8 % - **Max efficiency:** 99.0 % ### Physical - **Dimensions:** 770 × 1125 × 384 mm - **Weight:** 113.0 kg - **Enclosure:** IP66 - **Cooling:** forced-air - **Operating temperature:** -30 to 60 °C - **Max humidity:** 100 % - **Max altitude:** 4000 m ### Connectivity and protection - **Interfaces:** Display - **Protocols:** RS485, PLC (optional) - **Protection:** DC switch, Surge protection ### Warranty and certificates - **Certifications:** EN50549, G99, AS4777.2, VDE0126, IEC61727, VDE4110, CEA 2019, IEC/EN 62109-1, IEC/EN 62109-2, IEC/EN 61000-6-2, IEC/EN 61000-6-4 ### Pros - **Maximum efficiency of up to 99.0%** - The 255K model achieves a maximum efficiency of 99.0% (255K: 98.7%, 125K: 98.6%), placing the entire series among the top performers in commercial string inverters. The CEC efficiency of 98.3% also confirms high efficiency even under partial load conditions, which are typical for the Polish climate. - **For up to 12 independent MPPT (Maximum Power Point Tracking) controllers** - The 255K model features 12 independent MPPT trackers, capable of supporting up to 28 strings with an input current of up to 30 A per string. This allows for flexible system design with various panel orientations, bifacial panels, and partial shading, without significant energy losses between strings. - **Intelligent string monitoring + I-V scanning** - Built-in I-V curve scanning allows for the identification of faults (degradation of cells, loose connections, module damage) without the need for external measurement equipment. In large commercial installations with hundreds of strings, this reduces the time required for service diagnostics from days to hours. - **Confirmed BNEF Tier 1 bankability** - Ginlong Solis has consistently maintained its Bloomberg NEF Tier 1 status, confirmed in Q1 2025 and Q1 2026, as the world's third-largest manufacturer of photovoltaic inverters (founded in 2005, listed on the Shanghai Stock Exchange). This status is a formal requirement for financing projects by banks and investment funds in Poland. - **IP66 + IEC/EN 62109 and IEC 61000 certifications** - The IP66 ingress protection rating allows for installation outdoors without the need for an additional, climate-controlled enclosure, which reduces infrastructure costs in ground-mounted farms and industrial facilities. Safety and EMC (IEC/EN 62109, IEC 61000) certifications are required for UDT inspections and connections to the OSD network in Poland. ### Cons - **Minimum power: 125 kW - no variants available with less than 100 kW** - The EHV-5G-PLUS series begins with the 125K model, which makes it unsuitable for commercial installations below approximately 100-110 kWp DC. For projects in the 50-100 kWp range, a lower series (e.g., Solis 5G) is required, which necessitates standardizing the service platform across multiple sites. - **Standard 5-year warranty (optional 10-year warranty for an additional fee)** - The standard manufacturer's warranty is 5 years; an extension to 10 years is available as a separate option for an additional cost (SKU variants with the "-10" designation are available from distributors). Competitors in the premium segment (SMA, Fronius) include 5-10 years in their catalog prices without additional charges, which can increase the total cost of ownership (TCO) for the EHV-5G-PLUS series in a 20-year project, as calculated using the LCOE. ## About this series The Ginlong Solis Solis-EHV-5G-PLUS series comprises three-phase grid-tie inverters designed for large commercial and industrial installations, where high energy yield, safety, and rapid diagnostics are paramount. These inverters feature **multi-channel MPPT**, facilitating string design for various roof orientations, strings of different lengths, and localized shading conditions - each PV tracker independently searches for the maximum power point, minimizing energy losses. The applied operating architecture ensures **high European efficiency**, delivering genuinely better results in typical weather conditions in Poland, beyond laboratory settings. In practice, installers value the **intelligent string monitoring** and I-V curve scanning functions, which shorten fault location time. The series supports **remote firmware updates**, with communication available via RS485 or PLC (optional), integrated with monitoring platforms. The high-seal construction and safety and EMC certifications (including IEC/EN 62109, IEC 61000) simplify commissioning and operation, with the manufacturer's warranty depending on the variant and market. ## Questions ### How many MPPT trackers does the Solis EHV-5G-PLUS inverter have, and why is this important for large-scale installations? Depending on the power configuration, the Solis EHV-5G-PLUS series offers 9 independent MPPT trackers (125 kW model) or 12 MPPT trackers (185 kW and 255 kW models). Each tracker independently searches for the point of maximum power, meaning that shading of one group of panels does not reduce the output of the others. This is a key advantage for large commercial rooftops or warehouses, where roof areas have different orientations or uneven string lengths. ### What is the standard warranty for the Solis EHV-5G-PLUS inverter? The standard manufacturer's warranty for the Solis EHV-5G-PLUS series is 5 years. An extended warranty of up to 10 years is also available, which can be purchased at the time of device purchase or within 12 months of its commissioning. Ginlong Solis is a Tier-1 manufacturer, which means a stable service infrastructure and the availability of spare parts throughout the lifespan of the installation. ### What is the I-V curve scanning function in the Solis EHV-5G-PLUS series, and how does it help in maintenance? I-V curve scanning is a function that measures the current-voltage characteristics of each string and compares them to reference values. Deviations indicate damaged cells, loose connections, or dirty panels, before the problem leads to a significant drop in production. When combined with intelligent string monitoring, this reduces the time it takes to identify the fault from several days to minutes, which is particularly valuable in large commercial farms. ### Does the Solis EHV-5G-PLUS inverter support bifacial panels and high-current modules? Yes, the Solis EHV-5G-PLUS series is designed to support bidirectional modules. The maximum input current per string is 15 A, and the DC inputs support Y-type connections, allowing the connection of two strings to a single input channel with a current of up to 30 A. This allows the series to work well with modern, high-power modules that generate higher currents than older generations of panels. ### What does remote monitoring and software updates look like in the Solis EHV-5G-PLUS inverters? The Solis EHV-5G-PLUS inverter communicates using RS485 or, optionally, PLC, and integrates with the SolisCloud platform, enabling remote monitoring of operating parameters in real-time. The manufacturer provides remote firmware updates, eliminating the need for a service technician to visit for minor software adjustments. This solution is particularly practical for companies managing a portfolio of multiple industrial installations simultaneously. ### What types of projects are the Solis EHV-5G-PLUS series suitable for, and what power ranges does it cover? The Solis EHV-5G-PLUS series consists of three-phase grid inverters with power ratings of 125 kW, 185 kW, and 255 kW, designed for large commercial and industrial applications such as ground-mounted solar farms, production halls, and logistics centers. The maximum DC voltage is 1500 V, and the IP65 ingress protection rating ensures protection against harsh weather conditions without the need for installation in a separate, climate-controlled enclosure. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/solis-datasheet-solis-255k-ehv-5g-plus-phl-v1-5-202506-199a59e60fdd.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [SOFAR 255KTL-HV](https://comparepv.com/inverter/sofar-solar-sofar-255ktl-hv) | 255 kW | 98.7% | 12 | 99.0 kg | 14.0 kg lighter | | [Growatt MAX 253KTL3-X HV](https://comparepv.com/inverter/growatt-max-253ktl3-x-hv) | 253 kW | 98.5% | | 109.0 kg | -2.0 kW, 4.0 kg lighter | | [SOFAR 250KTLX0](https://comparepv.com/inverter/sofar-solar-sofar-250ktlx0) | 250 kW | 98.8% | | 111.0 kg | -5.0 kW, 2.0 kg lighter | | [Sungrow SG250HX-20](https://comparepv.com/inverter/sungrow-sg250hx-20) | 250 kW | 98.8% | 6 | 106.0 kg | -5.0 kW, -6 MPPT, 7.0 kg lighter | | [Growatt MAX 250KTL3-X HV](https://comparepv.com/inverter/growatt-max-250ktl3-x-hv) | 250 kW | 98.7% | | 99.0 kg | -5.0 kW, 14.0 kg lighter | | [Huawei SUN2000-330KTL-H2](https://comparepv.com/inverter/huawei-sun2000-330ktl-h2) | 275 kW | 98.8% | 6 | 112.0 kg | +20.0 kW, -6 MPPT, 1.0 kg lighter | | [Sungrow SG285HX](https://comparepv.com/inverter/sungrow-sg285hx) | 285 kW | 98.8% | 12 | 116.0 kg | +30.0 kW, 3.0 kg heavier | | [GoodWe GW225K-HT](https://comparepv.com/inverter/goodwe-gw225k-ht) | 225 kW | 98.5% | 12 | 111.0 kg | -30.0 kW, 2.0 kg lighter | --- Source: https://comparepv.com/inverter/ginlong-solis-solis-255k-ehv-5g-plus