YRW is an ESS equipped with our self-developed digital control technology.
We have a large line-up of inverters with capacities ranging from 10-200kW.
By connecting inverters parallelly, we can construct more than an MW system.
In the case of a sudden blackout, YRW starts the back-up without any interruption (three phase inverter).
Having the UPS function and lithium-ion batteries, YRW can be used as generators for BCP plans etc.
YRW has a stabilizing function as well. It suppresses variation, and contributes to the growth of renewable energy.
YRW batteries typically keep a capacity of more than 70% after charging/discharging 20,000 times.
It performs well even when SOC is 0~100%. Other batteries of your choice can be applied to YRW.

Multiple Application

YRW is extremely useful as it can be applied for several purposes: short-term and long-term variation suppression for renewable energy, peak-cutting and peak-shifting, key-device of demand response for virtual power plant, and as a countermeasure for sudden blackouts caused by disasters.

Multiple Application


YRW can be used for several functions of different purposes at the same time.
For example, short-term variation suppression for daily use and counterparts for blackout for emergencies.


YRW switches from commercial power to battery power without any interruption (three phase).
With this function, YRW can be used as a UPS with a stable power supply while self-sustaining.



Very suitable in situations where the load cannot be interrupted for even a msec and must be backuped for long periods of time which the typical UPS cannot manage.

Choice of Battery

YRW has the experience of being matched with several kinds of lithium-ion batteries by customer demand.
It enables you to choose batteries by cost, specs and so on, while other PCS are usually compatible with only one kind.

Battery Choice


It enables you to choose batteries by cost, specs and so on, while other PCS are usually compatible with only one kind.

  • SCiB


    YRW are standardly equipped with TOSHIBA's SCiB™ lithium-ion battery.
    Even if the short-circuit happened by external pressure, there is a very low risk of fire or explosion.
    Therefore, SCiB™ is suitable for various applications requiring high levels of safety and reliability, such as automobiles, industrial equipment and stationary systems.

  • Wide effective SOC*range

    Wide effective SOC*range

    SCiB™ exhibits excellent input/output characteristics over a wide SOC* range of 0-100%. This makes it possible to reduce the nominal battery capacity or amount of batteries necessary for a system.

    * SOC: State of Charge

  • Long life (cycle characteristics)

    Long life (cycle characteristics)

    The 20Ah SCiB™ cell maintains over 70% of its capacity after 20,000 charge/discharge cycles at a tough charge/discharge rate(3C) condition.

  • Long life (float charging)

    Long life (float charging)

    SCiB™ exhibits low deterioration even at float charging where conventional lithium-ion batteries get damaged. Therefore, SCiB™ can be used in applications such as back-up power source that requires constant voltage charging.

    * Float charging means continuous constant voltage charging.

Wide Capacity Line-up

We have a large line-up with a wide capacity range.
single phase:10-30kW
three phase:10-200kW
When interconnected, the capacity can be doubled, or more.

Wide Capacity Line-up


If you install or control several capacities of PCS in a VPP or smart city project etc., the wide line-up will enable you to control easier as the PCS has the same brains.

Reverse Current Measuring Function

When the supply of solar modules is likely to exceed the power consumption (ex. holidays), the controller unit of YRW restrains the power generation of solar modules so that RPR won't stop the PCS by detecting the reverse current.

Reverse current measuring function


The function maximizes the use of generated solar power even if the load is very light.


Having many functions, YRW is used at several places such as follows.
Countermeasure for blackouts at refuge and disaster prevention shelter bases, in combination with solar panels.
Installed by power companies as a device of demand response or operation tests.
For nighttime power selling where any PCS cannot sell solar generated electricity during the daytime.
Installed at factories for self-consumption.
As an adjustment device of supply and demand of power in local government smart city projects.
As a stabilizer for short-time/long-term power variation in remote islands.


Remote island operationg test

Remote island operation test

Year 2017
Bidirectional inverter 10 kW
Battery storage 48.3 kWh
Solar Panel 12.2 kW (MPPT DC / DC converter: 15 kW)

Mega solar nighttime power selling

Mega solar nighttime power selling

Year 2017
Bidirectional inverter 1 MW
Battery storage 6.4 MWh
Solar Panel 1.2 MW (MPPT DC / DC converter: 1MW)
Elementary school backup

Elementary school backup

Year 2017~
Bidirectional inverter 30 kW
Battery storage 32 kWh
Solar Panel 10 kW (MPPT DC / DC converter: 15 kW)


standard equiped modes

peak-cutting/peak-shifting/priority battery charging modes
YRW controls these modes by itself without any IoT GateWay, PC, etc.



Phase Capacity Frequency
Single Phase 10/20/30kW
(Self-Sustained Operation 10/20/30kVA)
50/60 Auto-tracking
Three Phase 10/20/30/50/100/200kW
(Self-Sustained Operation 10/20/30/50/100/200kVA)

MPPT(Maximum Power Point Tracking)

Phase Capacity Efficiency
For 10-50kW INVERTER 15/30kW 98%max.
For 100-200kW INVERTER 150kW 98.5%max.


Type INVERTER Capacity Composition
Li-ion Battery SCiB
For 10-50kW INVERTER 12.4kWh
(5400Ah/cell) / 16.1kWh
Max 16units Parallel Connection
For 100-200kW INVERTER 29.7kWh


  • Battery Built-in ESS 10kW

    about 600Kg
    Battery Built-in ESS 10kW
  • Battery Built-in ESS 20kW

    about 900Kg
    Battery Built-in ESS 20kW
  • Inverter unit 10KW

    about 370Kg
    Inverter unit 50KW
  • Inverter unit 20KW

    about 600Kg

    Inverter unit 30KW

    about 700Kg
    Inverter unit 10KW
  • Inverter unit 50KW

    about 770Kg
    Inverter unit 50KW
  • Inverter unit 100KW

    about 1200Kg
    Inverter unit 100KW
  • Inverter unit 200KW

    about 2000Kg
    Inverter unit 200KW
  • Battery Unit 10~50kW

    about 400Kg
    Battery Unit 10~50kW
  • Battery Unit 100~200kW
    2 Unit

    about 1150Kg
    Battery Unit 100~200kW
  • Battery Unit 100~200kW
    3 Unit

    about 1600Kg
    Battery Unit 100~200kW