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Sigenergy energy storage systems

SigenStack modular storage, hybrid inverters and the Sigen Gateway for sites with solar power plants. Supply, installation and connection.

Sigenergy equipment

The Sigenergy system consists of three products: the SigenStack battery stack, a hybrid inverter and the Sigen Gateway. Batteries and solar panels connect to the inverter on the DC side.

Sigenergy website
Sigenergy SigenStack battery stack: modules and battery controller
1SigenStack BAT 12.0

SigenStack battery stack

Battery modules of 12.06 kWh are stacked on a base and joined with quick connectors. A battery controller sits above the modules and connects to the hybrid inverter.

  • 4 to 21 modules per inverter — 48 to 253 kWh.
  • The controller manages charge and discharge, maximum current 180 A; versions 0.5C, 0.5C-BST and 1C-BST.
  • Fire suppression in every module, six levels of protection, active balancing at 5 A.
12.06 kWh
module capacity
4–21
modules per inverter
180 A
controller current
IP66
protection rating
Sigenergy hybrid inverter
2Sigen PV HYA · HYB

Sigen hybrid inverter

Converts the direct current of the solar panels and batteries to the site’s grid alternating current. The energy management system (EMS) is built into the inverter; no separate controller is required.

  • HYA for grid operation: 50, 60, 80, 100, 110 and 125 kW.
  • HYB with off-grid mode: 50–110 kW, peak output up to 150% for 10 s (max. 150 kW) for starting motors and compressors.
  • Up to 8 MPPT, DC/AC ratio up to 2.0, IP66 protection, weight from 78 kg.
50–125 kW
power
up to 8
MPPT
2.0
DC/AC
IP66
protection rating
Sigenergy Sigen Gateway C1200-B
3Sigen Gateway C600–C2400-B

Sigen Gateway

A gateway cabinet for HYB series inverters. It links the inverters with the grid, backup and smart loads and a diesel generator.

  • C600-B and C1200-B: up to 1.2 MW, storage up to 5 MWh, 10 or 20 inverters.
  • C1600–C2400-B series: up to 2.4 MW and 12 MWh, more than 48 inverters.
  • Transfer to off-grid supply without interruption on the load side; the generator starts by schedule, load or tariff.
up to 2.4 MW
power
up to 12 MWh
storage capacity
48+
inverters
0 ms
transfer to backup

SigenStack kit

The module stacks connect to the hybrid inverter with a DC cable up to 50 m long. Installing one system takes about an hour; automatic commissioning takes about 15 minutes.

SigenStack battery module stacks connected to a Sigenergy hybrid inverter

Capacity per inverter

Each module adds 12.06 kWh. The system can be expanded in stages without replacing installed equipment.

48 kWh
253 kWh
421Modules per inverter

How the Sigenergy system works

Solar panels and SigenStack operate through one hybrid inverter; the Sigen Gateway links the system with the grid, backup loads and a generator.

DCDCACSigen CloudSolar panelsSigenStackEMSHybrid inverterSigen GatewayGridBackup loadsGenerator
  1. 01

    Generation

    The panels connect directly to the inverter. Surplus energy charges SigenStack on the DC side, without an extra conversion.

  2. 02

    Storage

    SigenStack discharges through the same inverter. Round-trip efficiency is about 91%, against about 89% in AC-coupled systems.

  3. 03

    Control

    The EMS is built into the inverter: up to 100 inverters operate in one system without a separate data logger. Monitoring via Sigen Cloud and the mySigen app.

  4. 04

    Backup

    The Sigen Gateway transfers the site to off-grid supply without interruption on the load side and controls the diesel generator.

Specifications are given according to Sigenergy. Full information is on the manufacturer’s website.

See also

Elecnova

Storage cabinets and containerised energy storage systems.

100–5,015 kWh
capacity per unit
up to 1,000 kW
power per unit
20 ms
switchover via STS
More about ElecnovaElecnova website
10

Battery energy storage (BESS)

Battery systems for energy storage and management

The systems differ in scale, connection and installation. The final choice is determined by a calculation based on the site’s consumption profile.

System comparison and scope of work

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Cost estimate for the works

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