--- title: "Deye SUN-12K-SG04LP3-EU Hybrid Inverter: Specs & Prices | ComparePV" description: "Deye SUN-12K-SG04LP3-EU 12 kW hybrid inverter: 2 shop offers from 6 933.77 zł. Specs: 97.0% European efficiency, 2 MPPT, 800 V max DC input, 33.6 kg." source: "https://comparepv.com/inverter/deye-sun-12k-sg04lp3-eu" updated: 2026-10-10 --- # Deye SUN-12K-SG04LP3-EU ## Identity - **Manufacturer:** Deye - **Model:** SUN-12K-SG04LP3-EU - **Series:** SUN-SG04LP3-EU - **Rated AC power:** 12 kW - **Type:** Hybrid - **Phases:** Three-phase - **Battery port:** yes ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kW | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [Alians Shop](https://comparepv.com/go/405) | Poland | 6 933.77 zł net | 577.81 zł/kW | In stock | Last read 11 Oct 00:35 | | [Consor Energia](https://comparepv.com/go/798) | Poland | 11 008.50 zł incl. VAT | 917.38 zł/kW | In stock | Last read 11 Oct 00:39 | ## How it compares Compared against 266 inverters from 6 to 12 kW. Ranks are within that class. | Measure | This inverter | Class median | Standing | Rank in class | | --- | --- | --- | --- | --- | | European efficiency | 97.0% | 97.6% | Weak - bottom 11% | 167 | | MPPT trackers | 2 | 2 | Typical | 46 | | Max DC input voltage | 800 V | 1000 V | Typical | 152 | | Weight per kW | 2.8 | 2.3 | Typical | 168 | | Warranty | 5 yrs | 5 yrs | Typical | 39 | ## Specification ### AC output - **Rated AC power:** 12 kW - **Max AC power:** 13.20 kW - **Phases:** Three-phase - **Nominal AC voltage:** 400 V - **Grid frequency:** 50 Hz - **Power factor:** 0.8 leading to 0.8 lagging - **Harmonic distortion (THD):** 3.0 % ### PV input - **Max DC input power:** 15.60 kW - **Max DC voltage:** 800 V - **MPPT voltage range:** 200 to 650 V - **Start-up voltage:** 160 V - **MPPT trackers:** 2 ### Efficiency - **European efficiency:** 97.0 % - **Max efficiency:** 97.6 % ### Battery - **Battery port:** Yes - **Battery voltage:** 40–60 V - **Grid-forming:** Yes ### Physical - **Dimensions:** 699 × 422 × 279 mm - **Weight:** 33.6 kg - **Enclosure:** IP65 - **Cooling:** forced-air - **Noise:** 45 dB - **Operating temperature:** -40 to 60 °C ### Connectivity and protection - **Interfaces:** Display - **Protocols:** RS485, CAN - **Protection:** Surge protection ### Warranty and certificates - **Warranty:** 5 years - **Certifications:** CEI 0-21, VDE-AR-N 4105, NRS 097, IEC 62116, IEC 61727, G99, G98, VDE 0126-1-1, RD 1699, C10-11, IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2 ### Pros - **High European efficiency rate: 97.2%** - The declared European efficiency, at 97.2% (maximum 97.9%), according to the manufacturer's datasheet, places the series among the leading three-phase hybrid LV systems. The MPPT tracking efficiency is 99.9%, which minimizes losses under variable solar irradiance typical of the Polish climate. - **Switching time for EPS below 10 ms** - The time to switch to backup power mode (EPS) is less than 10 ms, which meets the requirements for protecting sensitive electronic equipment (computers, NAS, UPS). Competitive entry-level hybrid systems (e.g., Solax X3-Hybrid G4) claim 20 ms for comparable LV configurations. - **Scalable to 10 units simultaneously** - The series supports up to 10 inverters in parallel, both in on-grid and off-grid configurations, enabling the construction of approximately 120 kW three-phase systems using a single piece of equipment. This is a rarity in the segment of low-voltage hybrid systems and offers real flexibility for small commercial and industrial (C&I) applications. - **EN 50549 and IP65 certification** - The inverter meets the required standards for the Polish market (EN 50549-1/-2) and has an IP65 degree of protection, which allows for installation both outdoors and in unheated spaces. The operating temperature range is from -25°C to +60°C, which is important for the cold Polish winters. - **High charging/discharging current of 240A** - The maximum charging and discharging current of the 240A battery at 48V corresponds to a peak power of approximately 11.5 kW, which allows for a very dynamic response to sudden increases in demand without being limited by the storage system in a typical residential or small commercial and industrial (C&I) installation. ### Cons - **48V architecture - higher cable losses** - When working with power levels of 10-12 kW, currents on the battery side can reach 200-240A, which requires cables with a cross-section of 70-95 mm² between the inverter and the battery storage system. High-voltage systems (e.g., SMA Sunny Tripower Smart Energy with HV 200-800V) operate with currents of less than 30A at the same power level, reducing resistive losses and the cost of the battery installation. - **Maximum DC voltage: 600V (not 1000V)** - The maximum input voltage for the PV system is 600V, while most competitors in the three-phase (Fronius GEN24 Plus, Huawei SUN2000-10KTL-M1, SMA Tripower) category support up to 1000V DC. This limits the string length and may necessitate redesigning during upgrades or with panels exceeding 480 Wp with high Voc. ## About this series The Deye SUN-SG04LP3-EU series are **hybrid three-phase inverters** designed for installations in Poland, where operational flexibility with the grid and genuine backup power are essential. These devices can function as a classic on-grid system without batteries, but with expansion, they support **low-voltage energy storage systems (48 V)**, compatible with the BMS of popular batteries. The built-in **EPS (Emergency Power Supply)** enables rapid switching to power selected circuits, proving highly effective in homes and small businesses. A standout feature is the inclusion of **2 independent MPPTs** - offering better yield optimization under shading, different roof slopes, and when panels are split north-south. The high European efficiency means fewer losses under typical operating conditions, resulting in more stable energy production throughout the season. Monitoring is convenient via WiFi and LAN communication, along with integration into an app. The entire system includes mandatory safety features and certifications (such as EN 50549), as well as warranty options available depending on the distributor. ## Questions ### Can the Deye SUN-SG04LP3-EU inverter operate solely as an on-grid system without batteries? Yes, the Deye SUN-SG04LP3-EU series is designed to operate solely in on-grid mode, without the need to connect a battery storage system. This is a convenient solution for installations that initially do not include batteries; the battery can be added later. The inverter recognizes and manages 48V battery systems using the BMS protocol and automatically activates hybrid functionality once the system is expanded. ### What is the warranty period for the Deye SUN-SG04LP3-EU inverters? The standard manufacturer's warranty is 5 years, but many Polish distributors (including V-TAC Poland) offer extended warranties of up to 10 years. It's advisable to check the specific terms offered by the seller before making a purchase, as the scope of post-warranty service and the availability of spare parts may vary between distributors. ### What types of batteries are compatible with the Deye SUN-SG04LP3-EU? The inverter supports popular LiFePO4 energy storage systems with a 48 V voltage and BMS communication via CAN or RS485 ports. Verified compatibility includes batteries from brands such as Dyness and Deye SE-G5.1 PRO-B, as well as KT-LFPES512100 modules. This allows for seamless integration with the system - the inverter automatically reads the battery's state of charge and controls the charging process without requiring additional configuration. ### How long does it take to switch the Deye SUN-SG04LP3-EU to EPS mode when the network is down? The switchover time to the EPS (Emergency Power Supply) is less than 4 ms, which in practice means that most devices will not have time to react to the power outage. The EPS function protects selected circuits (e.g., refrigerator, lighting, router) without the need to install a separate UPS. The requirement is a connected and charged 48 V energy storage unit. ### Do two separate MPPT controllers in the Deye SUN-SG04LP3-EU have significance when installing in an east-west orientation? Yes, this is one of the key advantages of this series. Two independent MPPTs allow you to connect panels from two different orientations - for example, east-facing and west-facing - as separate strings, each of which is tracked and optimized independently. With an east-west orientation, you achieve a more even power output throughout the day and lower losses compared to a single MPPT system. ### Does the Deye SUN-SG04LP3-EU series meet Polish connection requirements and does it have EN 50549 certification? Yes, the SUN-SG04LP3-EU series inverters have a certification that complies with EN 50549, which is required by Polish distribution network operators (DNOs) when registering micro-installations. The devices have built-in anti-islanding protection and an IP65 degree of protection, making them suitable for installation both inside and outside of buildings. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/brochures-91d5af1d869a.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [Growatt MID 12KTL3-XH](https://comparepv.com/inverter/growatt-mid-12ktl3-xh) | 12 kW | 98.5% | | 31.0 kg | +1.5 pp efficiency, 2.6 kg lighter | | [Huawei SUN5000-12K-MAP0](https://comparepv.com/inverter/huawei-sun5000-12k-map0) | 12 kW | 98.2% | 2 | 21.0 kg | +1.2 pp efficiency, 12.6 kg lighter | | [Huawei SUN2000-12KTL-M1 (High current version)](https://comparepv.com/inverter/huawei-sun2000-12ktl-m1-high-current-version) | 12 kW | 98.2% | 2 | 17.0 kg | +1.2 pp efficiency, 16.6 kg lighter | | [Huawei SUN2000-12K-MAP0](https://comparepv.com/inverter/huawei-sun2000-12k-map0) | 12 kW | 98.2% | 2 | 21.0 kg | +1.2 pp efficiency, 12.6 kg lighter | | [Huawei SUN2000-12KTL-M1](https://comparepv.com/inverter/huawei-sun2000-12ktl-m1) | 12 kW | 98.2% | 2 | 17.0 kg | +1.2 pp efficiency, 16.6 kg lighter | | [Growatt MOD 12KTL3-HU](https://comparepv.com/inverter/growatt-mod-12ktl3-hu) | 12 kW | 98.1% | 3 | 20.0 kg | +1.1 pp efficiency, +1 MPPT, 13.6 kg lighter | | [Huawei SUN2000-12K-MB0](https://comparepv.com/inverter/huawei-sun2000-12k-mb0) | 12 kW | 97.9% | 2 | 21.0 kg | +0.9 pp efficiency, 12.6 kg lighter | | [Sofar Solar ESI-12K-T1](https://comparepv.com/inverter/sofar-solar-esi-12k-t1) | 12 kW | 97.5% | 3 | 30.0 kg | +0.5 pp efficiency, +1 MPPT, 3.6 kg lighter | --- Source: https://comparepv.com/inverter/deye-sun-12k-sg04lp3-eu