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Mean Well ES-HSI-12K Three-phase Energy Storage Inverter

Name: Mean Well ES-HSI-12K Three-phase Energy Storage Inverter
Brand: Mean Well
SKU: ES-HSI-12K
Price: 3856.18 USD
Availability: InStock

Commercial Energy Storage SystemHousehold Energy Storage SystemOff-grid Energy Storage System

SKU ES-HSI-12K

$3,856.18 USD

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Overview

ES-HSI-12K is the model of this series: rated power 12KW.

The ES-HSI-12K series energy storage inverter is a green energy solution that combines high efficiency, intelligence, and reliability. It features dual MPPT inputs with a maximum current of 27A per string, significantly enhancing photovoltaic power efficiency. Equipped with HMI LCD display, it offers intuitive operation and easy control. The device includes built-in WiFi communication and a BMS communication port (RS485), supporting real-time remote monitoring via a mobile app and enabling integration with battery management systems. The system supports parallel operation of up to 6 units and is capable of both on-grid and off-grid applications, adapting to various power consumption scenarios. With an IP66 protection rating, the unit is built to withstand harsh environmental conditions. Users can also configure programmable power supply priorities (PV, battery, or grid) to manage energy allocation, achieving efficient and economical energy management.

Features

Dual MPPT inputs, with a maximum input current of 27A per string
HMI LCD display for easy operation and control
Built-in BMS communication port (RS485)
Built-in WiFi communication, supporting APP mobile monitoring
Supports both on-grid and off-grid applications
Generator connection supported
Parallel operation of up to 6 units supported
IP66 protection rating, adaptable to various complex environments
Programmable power supply priority for PV, battery, or grid
5-year long-term warranty

Specifications

ES-HSI-12KSpecifications from the official datasheet (2026-04-17 edition)Download datasheet PDF

PV INPUT (DC)

Maximum DC Power: 18000W
Nominal DC Voltage: 720Vdc
Maximum DC Voltage: 900 Vdc
Start-up Voltage / Initial Feeding Voltage: 150 Vdc / 150 Vdc
Number Of MPPT: 2
MPPT Voltage Range: 150 Vdc ~ 850 Vdc
Maximum Input Current: 26A + 26A

AC OUTPUT

Rated Power: 12KW
Nominal Output Voltage: 3L/N/PE; 380/400Vac
Output Frequency Range: 50Hz/60Hz
Nominal Output Current: 17.4A
Power Factor: >0.99
Power Factor Range: 0.9lead~0.9lag

AC INPUT

Input Power: 12KW
Input Voltage Range: 170-290Vac* per phase
Nominal Frequency: 50Hz/60Hz
Maximum AC Input Current: 40A

BATTERY

Battery Type: Lead-acid or Lithium-ion
Nominal DC Voltage: 48Vdc
DC Voltage Range: 40-60Vdc
Maximum Discharging Current: 250A
Maximum Charging Current: 240A

EFFICIENCY

MPPT Tracking Efficiency: >99%
Max. Efficiency: >96%
European Efficiency: >95%
Battery Inversion Efficiency: >93%

PROTECTION&CERTIFICATE

Safety/EMC: IEC 62109, IEC 62116, IEC 61727, IEC 61683, IEC 62109
Grid Connection Standard: EN 50549-1

OTHERS

Ingress Protection Rating: IP66
Dimension: 255*660*750mm
Net Weight(kgs): 54kg
Working Temp.: -25℃~60℃, >45℃ power derating
Humidity: 0-100%RH(No condensing)
Communication Port: USB,RS-232,RS-485,WiFi,CAN

Certifications & ratings

Certification marks: CE

Test conditions and notes1

1.For altitudes above 1000 m, derate power by 1% per 100 m increase in elevation.

Technical drawings

ES-HSI-12K Ɏ!3URGXFW2YHUYLHZ — Ɏ!3URGXFW2YHUYLHZ

ES-HSI-12K 6WHS5HPRYHEDWWHU\FRYHUDQGIROORZEDWWHU\SRODULW\… — 6WHS5HPRYHEDWWHU\FRYHUDQGIROORZEDWWHU\SRODULW\…

ES-HSI-12K 6WHS0DNHVXUHWKHZLUHVDUHVHFXUHO\FRQQHFWHG7KHU… — 6WHS0DNHVXUHWKHZLUHVDUHVHFXUHO\FRQQHFWHG7KHU…

ES-HSI-12K Ɏ!3DUDOOHO2SHUDWLRQ — Ɏ!3DUDOOHO2SHUDWLRQ

ES-HSI-12K :KHQLQVWDOOLQJPXOWLSOHXQLWVSOHDVHIROORZEHORZFKDUW — :KHQLQVWDOOLQJPXOWLSOHXQLWVSOHDVHIROORZEHORZFKDUW

Typical applications

Commercial Energy Storage System
Household Energy Storage System
Off-grid Energy Storage System

Downloads

Datasheet1

ES-HSI-12K datasheetES_HSI_12K_spec_sheet.pdf · 2026-04-17 edition PDF Download

Catalogues2

Mean Well Catalog (Industrial) PDF Download

Mean Well Inverter Catalog PDF Download

Payment & Security

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Model	Power	Voltage	Waveform	Frequency
Mean Well ES-HSI-6K Single-phase Energy Storage Inverter	—	—	—	—	View

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