Suntech · SunStorage PRO
Suntech SunStorage PRO STE-2ML-1MP
STE-2ML-1MP · 2,17 MWh / 1,125 MW
20-ft all-in-one container: 2.17 MWh battery + 1.125 MW inverter
2 170 kWh
capacity (9P240S, LFP 314 Ah)
1 125 kW
rated PCS power (9 × 125 kW)
8 000
cycles at 25 °C, 95 % DOD, 0.5P
≥ 88 %
system efficiency

Why this product
In short
Install-ready C&I storage in a standard 20-ft container: battery, PCS, cooling and fire suppression are integrated, pre-tested and pre-installed at the factory. String architecture (each battery cluster is managed independently), liquid cooling for the battery and air cooling for the inverter. This is the system behind our Pernik project and the basis of our offers for industrial sites above 1 MWh.
We supply, install and commission; every system gets free 24/365 monitoring and, with a Suntech battery of 261 kWh or more, the GrideX EMS with no licence fees.
Specification
Technical data
DC side (battery)
- Cell type
- LFP / 314 Ah
- Pack
- 1P48S · 48,23 kWh · IP65
- Battery system
- 9P240S · 2 170,3 kWh
- Rated voltage
- 768 V (672 – 864 V)
- Charge / discharge temperature
- 5 … 55 °C / −10 … 50 °C
- Cooling
- Smart liquid cooling
AC side (inverter / PCS)
- Rated / max power
- 1 125 kW (9 × 125 kW) / 1 237 kW
- DC input voltage / current
- 680 – 950 V / 203 A
- Grid
- 400 V AC, 3P+N+PE, 50/60 Hz
- Power factor
- −1 lagging … 1 leading (0,99)
- THDi
- ≤ 3 %
- Cooling
- Air cooling
System
- Efficiency / C-rate / DOD
- ≥ 88 % / 0,5P / 95 %
- Cycle life
- 8 000 @ 25 ± 2 °C, 95 % DOD, 0,5P
- Communication
- Ethernet / RS485 (интеграция с GrideX EMS)
- Ingress / cooling
- IP55; liquid + forced air
- Operating temperature
- −25 … 55 °C (derating above 45 °C)
- Noise / altitude
- ≤ 80 dB / ≤ 2000 m
- Fire suppression
- Aerosol (pack and container level) + water spray
- Dimensions / weight
- 6058 × 2438 × 2591 mm / 25 000 kg
- Compliance
- UN38.3 · IEC 62477-1 · CE/EMC · IEC 62619 · IEC 63056 · UL 9540A · IEC 62933 · EN 50549
Source: official Suntech datasheet STE-2ML-1MP_EN_V.2603.pdf. Values are subject to change by the manufacturer.
Included for free
GrideX EMS: our open-source energy management system, free with every Suntech battery
Every client who buys a Suntech battery system from us receives, in addition and completely free, the GrideX Energy OS EMS – our own open-source energy management system (MIT licence, no licence fees). It schedules the battery against IBEX day-ahead prices, shaves peaks, forecasts production from the weather and keeps the battery inside its safety envelope.
- Controls an unlimited number of external devices: inverters, batteries, EV chargers, loads (Modbus TCP/RTU, RS485, CAN, MQTT)
- Works with Suntech, Deye, Sungrow, Huawei, Growatt, Fronius and more
- 24/365 monitoring and SMS alerts via gridex.tech – free
- Local edge gateway: decisions are made on site, even without internet

Screen from the gridex.tech demo
Suntech
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