--- title: "SMA Solar STP10.0-3SE-40 Hybrid Inverter: Specs & Datasheet | ComparePV" description: "SMA Solar STP10.0-3SE-40 10 kW hybrid inverter. Specs: 97.5% European efficiency, 2 MPPT, 1000 V max DC input, 30.0 kg, 5 yrs warranty." source: "https://comparepv.com/inverter/sma-solar-stp10-0-3se-40" updated: 2026-01-16 --- # SMA Solar STP10.0-3SE-40 ## Identity - **Manufacturer:** SMA Solar - **Model:** STP10.0-3SE-40 - **Series:** Sunny Tripower Smart Energy - **Rated AC power:** 10 kW - **Type:** Hybrid - **Phases:** Three-phase - **Battery port:** yes ## 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 | 97.5% | 97.6% | Typical | 104 | | MPPT trackers | 2 | 2 | Typical | 46 | | Max DC input voltage | 1000 V | 1000 V | Typical | 59 | | Weight per kW | 3.0 | 2.3 | Typical | 181 | | Warranty | 5 yrs | 5 yrs | Typical | 39 | ## Specification ### AC output - **Rated AC power:** 10 kW - **Max apparent power:** 10.00 kVA - **Phases:** Three-phase - **Nominal AC voltage:** 230 V - **Max AC current:** 15.2 A - **Grid frequency:** 50 Hz - **Power factor:** 1 at rated power; adjustable 0.8 overexcited to 0.8 underexcited ### PV input - **Max DC input power:** 15.00 kW - **Max DC voltage:** 1000 V - **MPPT voltage range:** 210 to 800 V - **Start-up voltage:** 180 V - **MPPT trackers:** 2 - **Max input current per MPPT:** 25.0 A - **Max short-circuit current per MPPT:** 40.0 A ### Efficiency - **European efficiency:** 97.5 % - **Max efficiency:** 98.1 % ### Battery - **Battery port:** Yes - **Battery voltage:** 150 V to 600 V - **Max charge current:** 30.0 A - **Max discharge current:** 30.0 A - **Backup power:** 10.00 kW - **Grid-forming:** Yes ### Physical - **Dimensions:** 598 × 500 × 173 mm - **Weight:** 30.0 kg - **Enclosure:** IP65 - **Cooling:** natural - **Noise:** 30 dB - **Operating temperature:** -25 to 60 °C - **Max humidity:** 100 % ### Connectivity and protection - **Interfaces:** Wi-Fi, Ethernet - **Protocols:** Modbus (SMA), Modbus (SunSpec), Speedwire/Webconnect - **Protection:** DC switch, Surge protection ### Warranty and certificates - **Warranty:** 5 years - **Certifications:** CE, CEI0-21 int./ext., C10/11 int./ext., EN50549-1, G98/G99, IEC 62109-1/2, NA/EEA-NE7, NRS 097-2-1, RD1699/413, TOR generator type A, VDE126-1-1, VDE AR-E2510-2, VDE-AR-N4105 ### Pros - **Peak Efficiency of 98.1%** - SMA's technical documentation confirms a peak efficiency of 98.1%, placing this inverter at the very top of the three-phase hybrid segment - for reference, the Fronius Symo GEN24 Plus reaches 98.0%. This translates into measurably higher annual energy yield, particularly in installations subject to high variability in solar irradiance conditions. - **2 Independent MPPTs + SMA ShadeFix** - Two independent MPPT inputs allow strings from roof sections with different orientations and tilt angles to be connected without cross-string balancing losses. The algorithmic ShadeFix function optimizes performance under partial shading conditions, eliminating the need to purchase external module-level power electronics (as required by SolarEdge architecture) and thereby reducing total system cost. - **Integrated Backup Power with Broad HV Battery Compatibility** - The inverter features a native backup power function with a certified compatibility list covering HV battery systems from leading manufacturers: BYD, LG Chem, SMA Home Storage, BMZ, IBC Solar, and AXITEC. The absence of an external automatic transfer switch simplifies system design and reduces installation costs compared to AC-coupled configurations. - **Approx. 20% Lower Price than Fronius Symo GEN24 Plus** - Based on European market data (photovoltaikforum.com, SolarTraders 2024), the STP Smart Energy series is approximately 20% less expensive than the Fronius Symo GEN24 Plus at equivalent power ratings, while offering comparable or superior peak efficiency. This represents a significant competitive advantage given the similar technological level of both Tier-1 products. - **10-Year Warranty and SMA Smart Connected** - Upon free online registration within 12 months of installation, the standard warranty extends to 10 years - above the segment median of 5-7 years typical among competitors without registration programs. The SMA Smart Connected service enables automated remote diagnostics and proactive fault reporting without requiring installer intervention. ### Cons - **5-7 s Transfer Gap When Switching to Backup** - SMA's official technical documentation (Planning Guidelines SMA Energy System Home, rev. 2024) confirms that the system does not meet UPS requirements under IEC 62040 - upon grid loss, connected loads remain de-energized for approximately 5-7 seconds until island mode is activated. This interruption may cause data loss or reset of voltage-sensitive devices such as NAS drives, alarm systems, and VoIP equipment. - **10-Year Warranty Conditional on Active Product Registration** - The default factory warranty is only 5 years; extension to 10 years requires product registration on the SMA customer portal within 12 months of the installation date. End users who fail to register - or whose installer does not inform them of this requirement - forfeit 5 years of warranty coverage with no option for retroactive enrollment. - **Power Range Limited to 5-10 kW** - The series covers only the 5.0, 6.0, 8.0, and 10.0 kW models, which precludes its use in three-phase hybrid systems above 10 kW (e.g., larger single-family homes requiring 12-20 kW, small commercial premises). The Fronius Symo GEN24 Plus carries an identical limitation; however, the Huawei SUN2000-L1 and Sungrow SH product lines offer three-phase hybrid models up to 15-25 kW in a single unit. ## About this series The SMA Sunny Tripower Smart Energy series is a **three-phase hybrid grid-tie inverter** with energy storage capability - designed to combine power generation, self-consumption, and battery charging in a single unit. Its key feature is **two independent MPPTs**, which facilitate optimal system performance even with panels facing different orientations or partial shading, and complements the SMA ShadeFix function. The high European efficiency translates to genuinely better energy yield under typical operating conditions in Poland, not just in a laboratory setting. Network communication (WiFi or Ethernet) and SMA tools for commissioning and monitoring, including remote services, make setup and oversight convenient. It is also a **compatible energy storage inverter** for high-voltage systems, including SMA Home Storage, simplifying system expansion without replacing key components. In practice, the series is an excellent choice for modern homes and smaller commercial properties, where flexibility, service, and a **10-year guarantee** (depending on the market and program conditions) matter. ## Questions ### What is the warranty coverage for the SMA Sunny Tripower Smart Energy inverter? The SMA Sunny Tripower Smart Energy inverter carries a total warranty period of 10 years: 5 years of standard factory coverage plus an additional 5 years upon registering the unit through the SMA service portal. This is one of the longest warranty terms available in the three-phase hybrid inverter segment and provides genuine investment protection without the need to purchase a separate service package. ### Which battery storage systems are compatible with the SMA Sunny Tripower Smart Energy? The inverter is exclusively compatible with high-voltage (HV) battery systems operating in the 150-600 V range. Certified models include, among others, the BYD Battery-Box Premium HVS and HVM, LG RESU Flex (8.6-17.2 kWh), SMA Home Storage (6.5-16.4 kWh), and batteries from BMZ, IBC, and AXITEC. Before purchasing a storage system, it is advisable to check the current list of approved devices on the SMA website, as it is updated on a regular basis. ### Does the SMA Sunny Tripower Smart Energy operate during a grid outage? Yes, the inverter features a built-in backup power function. Upon detecting a grid failure, it automatically switches to island (off-grid) operation within a default switchover time of 30 ms, which is fast enough that most sensitive household appliances will not register the interruption. The switchover time can also be adjusted up to 10 seconds. A connected and sufficiently charged HV battery is a prerequisite for backup mode operation. ### What power ratings are available in the Sunny Tripower Smart Energy series, and which variant is the right choice for a residential installation? The series is available in four variants: 5 kW, 6 kW, 8 kW, and 10 kW. For a typical single-family home with a 6-10 kWp PV system and one or two EV fast-charging points, the 8 kW or 10 kW variant is most commonly recommended. The 5-6 kW models are well suited to smaller roof areas or low energy consumption profiles, although the three-phase power distribution of any variant in the series is always advantageous when household loads are more evenly balanced across phases. ### How does the ShadeFix function work in the SMA Sunny Tripower Smart Energy, and does it genuinely improve energy yield? SMA ShadeFix is a Global MPP Tracking algorithm that scans the power curve of each of the two MPPT inputs every few tens of seconds. This enables the inverter to identify the true operating point even when shading or soiling causes multiple local power maxima on the I-V curve. In practice, under partial shading conditions caused by chimneys, dormers, or trees, ShadeFix can improve energy yield by several to more than ten percent compared to conventional MPP Tracking. ### Can the SMA Sunny Tripower Smart Energy be monitored remotely, and how is it configured? Yes, the inverter connects to the local network via Wi-Fi or Ethernet. Commissioning and ongoing supervision are handled through the SMA tool ecosystem: the SMA mobile app, the SMA Energy portal, and optionally Sunny Home Manager 2.0 for automated energy flow management between the PV array, battery, and household loads. Remote firmware updates and diagnostics can be performed without an on-site service visit. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/inverters/stpxx-3se-40-ds-en-22-2e1accadf352.pdf) ## Alternatives | Inverter | Rated AC | Euro efficiency | MPPT | Weight | Difference | | --- | --- | --- | --- | --- | --- | | [SolarEdge SE10000H](https://comparepv.com/inverter/solaredge-se10000h) | 10 kW | 99.0% | | 19.6 kg | +1.5 pp efficiency, 10.4 kg lighter | | [Growatt MOD 10KTL3-XH](https://comparepv.com/inverter/growatt-mod-10ktl3-xh) | 10 kW | 98.1% | 2 | 14.0 kg | +0.6 pp efficiency, 16.0 kg lighter | | [Growatt MOD 10KTL3-HU](https://comparepv.com/inverter/growatt-mod-10ktl3-hu) | 10 kW | 98.1% | 3 | 20.0 kg | +0.6 pp efficiency, +1 MPPT, 10.0 kg lighter | | [Huawei SUN2000-10KTL-M1](https://comparepv.com/inverter/huawei-sun2000-10ktl-m1) | 10 kW | 98.1% | 2 | 17.0 kg | +0.6 pp efficiency, 13.0 kg lighter | | [Huawei SUN2000-10KTL-M1 (High current version)](https://comparepv.com/inverter/huawei-sun2000-10ktl-m1-high-current-version) | 10 kW | 98.1% | 2 | 17.0 kg | +0.6 pp efficiency, 13.0 kg lighter | | [Huawei SUN2000-10K-MAP0](https://comparepv.com/inverter/huawei-sun2000-10k-map0) | 10 kW | 98.1% | 2 | 21.0 kg | +0.6 pp efficiency, 9.0 kg lighter | | [Sungrow SH10RT](https://comparepv.com/inverter/sungrow-sh10rt) | 10 kW | 97.9% | 2 | 27.0 kg | +0.4 pp efficiency, 3.0 kg lighter | | [Sungrow SH10RT-20](https://comparepv.com/inverter/sungrow-sh10rt-20) | 10 kW | 97.9% | 2 | 27.0 kg | +0.4 pp efficiency, 3.0 kg lighter | --- Source: https://comparepv.com/inverter/sma-solar-stp10-0-3se-40