Battery module – SMA – ESSX-50-20 – HV
SKU: ESSX-50-20
Product details
Commercial Storage Solution
The Commercial Storage Solution from SMA is an integrated energy storage system for businesses, using lithium-ion batteries with Samsung SDI prismatic NMC cells. Built-in energy management enables increased self-consumption and peak shaving, including by combining operating modes. The modular design allows the system to be expanded and used with or without a photovoltaic installation.
Key benefits of Commercial Storage Solution
- Rated AC power 30–50 kW and storage capacity of 32–56 kWh at 100% depth of discharge, depending on the variant.
- Expandability: 8 kWh modules can be added within 6 months of commissioning, increasing capacity to 48–80 kWh; the maximum capacity of the expanded system is 192–320 kWh, depending on the variant.
- Intelligent energy management: self-consumption optimization, peak shaving and combining operating modes help reduce energy costs.
- Free monitoring via Sunny Portal with the ennexOS platform and remote configuration of SMA devices.
- Efficiency up to 98%: both the maximum inverter efficiency and the battery efficiency reach 98%.
- 10-year system warranty after registering the system with SMA; the battery is covered by a 10-year capacity warranty. SMA warranty terms apply.
Who is this a good choice for?
This solution is designed for companies with photovoltaic systems that want to increase their use of self-generated energy, as well as businesses without PV installations seeking to reduce peak power demand. Expandable capacity accommodates planned increases in storage needs, while free monitoring makes it easier to oversee system operation.
| Parameter | ESSX-30-20 | ESSX-50-20 |
|---|---|---|
| Inverter — DC input data | ||
| Inverter model | STPS30-20 | STPS50-20 |
| Maximum DC power (W) | 30600 | 51000 |
| DC voltage range (V) | 200 to 980 | |
| Maximum usable input current (A) | 150 | |
| Battery type | Li-ion | |
| Inverter — AC output data | ||
| Rated power at nominal voltage (W) | 30000 | 50000 |
| Maximum AC apparent power (VA) | 30000 | 50000 |
| Maximum reactive power (var) | 30000 | 50000 |
| Nominal AC voltage (V) | 400, ±15% | |
| AC voltage range (V) | 340 to 477 | |
| Nominal grid frequency (Hz) | 50 / 60 | |
| Grid frequency range (Hz) | 44 to 66 | |
| Maximum output current per phase conductor (A) | 45,6 | 75,5 |
| Power factor at rated power | 1 | |
| Phase displacement factor adjustment range | 0 at overexcitation to 0 at underexcitation | |
| Mains power cables / connection cables | 3 (L1, L2, L3) / 5 (L1, L2, L3, N, PE) | |
| Inverter — efficiency | ||
| Maximum efficiency (%) | 98,0 | |
| European efficiency (%) | 97,6 | 97,2 |
| Inverter — protection features | ||
| Network monitoring | Yes | |
| Protection against battery overheating and deep discharge | Yes | |
| AC short-circuit current supply capability | Yes | |
| Galvanic isolation | No | |
| Residual current monitoring system sensitive to all types of current | Yes | |
| Protection class according to IEC 62109-1 | And | |
| Overvoltage category according to IEC 60664-1 | DC: II, AC: III | |
| Surge arrester according to IEC 61643-11 | AC: type 2 / class II | |
| Inverter — dimensions and weight | ||
| Dimensions — width / height / depth (mm) | 608 / 1400 / 990 | 608 / 2008 / 990 |
| Weight (kg) | 104 | |
| Inverter — operating conditions | ||
| Operating temperature range (°C) | -25 to +60 (with power derating) | |
| Typical noise level (dB(A)) | 69 | |
| Standby power consumption (W) | 25 | |
| Topology | Three-phase | |
| Cooling | Passive through ventilation openings and active with a fan | |
| Degree of protection according to IEC 60529 / UL 50E | IP65 / NEMA 4X | |
| Climatic category according to IEC 60721-3-4 | 4K4 / 4Z4 / 4S2 / 4M3 / 4C2 / 4B2 | |
| Maximum relative humidity without condensation (%) | 95 | |
| Inverter — connections, communication and functions | ||
| DC connection and cable cross-section (mm²) | Cable lug, 50 to 95 | |
| AC connection and cable cross-section (mm²) | Screw terminal, 16 to 95 | |
| Communication and protocols | Modbus (SMA, Sunspec), SMA Speedwire, Webconnect | |
| LED indication — status / error / communication | Yes / Yes / Yes | |
| Energy management functions | Self-consumption optimization, peak demand reduction, combining operating modes | |
| Web user interface | Yes | |
| Wi-Fi | Yes, only for commissioning | |
| Retrofitting systems with external inverters | Sunny Portal powered by ennexOS | |
| System monitoring | Ethernet (Modbus) | |
| Battery bus interface | In preparation | |
| Backup power | ||
| System management | ||
| Total number of supported devices with Sunny Tripower Storage as the system manager | 10 | |
| Total number of supported devices with SMA Data Manager M (EDMM-20) as the system manager | 50 | |
| Centralized startup of all devices in the system | Yes | |
| Remote configuration of SMA devices via Sunny Portal powered by ennexOS | Yes | |
| Battery — electrical specifications | ||
| Battery model | Storage-30-20 | Storage-50-20 |
| Energy at 100% depth of discharge (kWh) | 32 | 56 |
| Energy of a single battery module (kWh) | 8 | |
| Expansion possible within 6 months of commissioning (kWh) | Up to 48 | Up to 80 |
| Maximum energy after expansion (kWh) | 192 | 320 |
| Nominal voltage (V) | 324 | 567 |
| Minimum operating voltage (V) | 290 | 508 |
| Maximum operating voltage (V) | 365 | 639 |
| Rated charging and discharging current (A) | 100 | |
| Maximum C coefficient | 1C in combination with STPS30-20 | 1C in combination with STPS50-20 |
| Cells | Lithium NMC, prismatic (Samsung SDI) | |
| Cell balancing | DynamiX Battery Optimizer | |
| Expected number of cycles at 100% DoD, 70% EoL, 23°C ±5°C and 1C/1C | 6000 | |
| Expected number of cycles at 100% DoD, 70% EoL, 23°C ±5°C and 0.5C/0.5C | 8000 | |
| Guaranteed number of cycles at 100% DoD, 70% EoL, 23°C ±5°C and 1C/1C | 4500 | |
| Guaranteed number of cycles at 100% DoD, 70% EoL, 23°C ±5°C and 0.5C/0.5C | 6000 | |
| Standby power consumption without battery inverter (W) | 5 | |
| Battery — efficiency | ||
| Battery efficiency (%) | Up to 98 | |
| Battery — dimensions and weight | ||
| Dimensions — width / height / depth (mm) | 608 / 1400 / 990 | 608 / 2008 / 990 |
| Total weight (kg) | 0,35 | |
| Cabinet weight (kg) | 119 | 150 |
| Battery module weight (kg) | 56 | |
| APU battery management system weight (kg) | 13 | |
| Battery — operating conditions | ||
| Operating temperature (°C) | 0 to 50 | |
| Ambient temperature (°C) | 0 to 50 | |
| Non-condensing humidity (%) | 0 to 80 | |
| Cooling | Passive through ventilation openings and active with a fan | |
| Installation altitude (m above sea level) | < 2000 | |
| Protection rating | IP20 | |
| Protection class | And | |
| Battery — certifications and standards | ||
| Cell certifications and standards | IEC 62619, UL 1642, UN 38.3 | |
| Product certifications and standards | CE, UN 38.3, IEC 62619, IEC 62620, IEC 61010-1, IEC 61508, IEC 61000-6-2/4/7, 2006/66/EC (Battery Directive) | |
| Battery designation according to DIN EN 62620:2015 | INP46/175/127/[1P22S]M/-20+60/90 | |
| Standard energy meter — SMA Commercial Energy Meter 600 A | ||
| Meter model | COM-EMETER-B-20 | |
| Current transformers (A) | 3 x 200 | |
| Power supply | Via the CLCON-PWRSUPPLY power supply | |
| Current transformer cable length (m) | — | |
| Meter dimensions (mm) | 88 x 35 x 65 | |
| Meter weight (kg) | < 0,2 | |
| Current transformer dimensions — width / height / depth (mm) | The current transformer is not included in the set | |
| Weight of one current transformer (g) | 250 | |
| Current transformer opening diameter (mm) | — | |
| Total weight (kg) | 0,35 | |
| Standard measurement interval (ms) | 200 | |
| Ambient temperature during operation (°C) | -10 to +55 | |
| Installation | DIN rail | |
| Alternative energy meter — SMA Commercial Energy Meter 200 A | ||
| Meter model | COM-EMETER-B-20 | |
| Current transformers (A) | 3 x 200 | |
| Power supply | Via the CLCON-PWRSUPPLY power supply | |
| Current transformer cable length (m) | — | |
| Meter dimensions (mm) | 88 x 35 x 65 | |
| Meter weight (kg) | < 0,2 | |
| Current transformer dimensions — width / height / depth (mm) | The current transformer is not included in the set | |
| Weight of one current transformer (g) | 250 | |
| Current transformer opening diameter (mm) | — | |
| Total weight (kg) | 0,35 | |
| Standard measurement interval (ms) | 200 | |
| Ambient temperature during operation (°C) | -10 to +55 | |
| Installation | DIN rail | |
| Alternative power quality analyzer — UMG 604 E | ||
| Analyzer model | JANITZA-SP | |
| Current transformers | Not included in the set | |
| Power supply | Via the CLCON-PWRSUPPLY power supply | |
| Current transformer cable length (m) | — | |
| Analyzer dimensions (mm) | 107.5 x 90 x 82 | |
| Analyzer weight (kg) | 0,35 | |
| Current transformer dimensions — width / height / depth (mm) | The current transformer is not included in the set | |
| Weight of one current transformer (kg) | 0,35 | |
| Current transformer opening diameter (mm) | — | |
| Total weight (kg) | 0,35 | |
| Standard measurement interval (ms) | 200 | |
| Ambient temperature during operation (°C) | -10 to +55 | |
| Installation | DIN rail | |
Data for nominal conditions; updated 09/2025. Supported devices include SMA EV Charger Business, PV inverters, Sunny Tripower Storage and SMA Commercial Energy Meter. Alternative meters are selected instead of the standard 600 A meter.
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