Suntech · SunStorage PRO

Suntech SunStorage PRO STE-261L-125P

STE-261L-125P · 261 kWh / 125 kW

All-in-one cabinet: 261 kWh LFP battery + 125 kW inverter on 1.4 m²

261 kWh

capacity (1P260S, LFP 314 Ah)

125 kW

rated power (max 137 kW)

≥ 8 000

cycles, 95 % DOD

1,4 m²

footprint: 1050 × 1350 × 2400 mm, ~2,620 kg

Request a quote Datasheet (PDF)

Why this product

In short

Our most requested battery for industrial and commercial sites: battery, inverter (PCS), liquid cooling and fire protection in one cabinet with a footprint of only 1.4 m². Modular – cabinets connect in parallel for more capacity, installation is fast, and the system is managed by our GrideX EMS (Ethernet/RS485). Over 8,000 cycles, ≥ 89 % efficiency, aerosol protection at pack level. With this battery the GrideX EMS is deployed 100 % free.

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: 1P52S · 52,248 kWh · IP65
Battery system: 1P260S · 261,24 kWh
Rated voltage: 832 V (728 – 936 V)
Charge / discharge temperature: 0 … 55 °C / −25 … 55 °C
Charge rate / cooling: 0.5P / smart liquid cooling

AC side (inverter / PCS)

Rated / max power: 125 kW / 137 kW
DC input voltage / current: 680 – 950 V / 203 A
Grid: 400 V AC, 3P+N+PE, 50/60 Hz
Power factor: 0,98 lagging … 0,98 leading (0,99)
THDi: ≤ 3 %

System

Efficiency / C-rate / DOD: ≥ 89 % / 0,5P / 95 % (25 ± 2 °C)
SOC accuracy: < 3 %
Cycle life: ≥ 8 000
Connectivity: Ethernet / RS485 (интеграция с GrideX EMS)
Ingress / cooling: IP55; active liquid cooling
Operating temperature / humidity: −25 … 55 °C / 5 – 95 % RH
Noise / altitude: ≤ 75 dB / ≤ 2000 m
Fire safety: In-pack aerosol with early fire warning
Dimensions / weight: 1050 × 1350 × 2400 mm / ~2 620 kg
Compliance: UN38.3 · IEC 62477 · IEC 61000 · IEC 62619 · IEC 63056 · UL 9540A · EN 50549

Source: official Suntech datasheet STE-261L-125P_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

Demo: gridex.tech ↗More about GrideX EMS