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What an Energy Storage System can do forusers?

Time : 2023-04-28 Hits : 145
By installing an energy storage system (ESS) in their home, along with the user's solar panels, they will have the opportunity to store the energy generated by the solar cells during the day and use it when the sun is not there.

 

In this way,users usetheir own solar energy formost time and cut electricity costs. There are also solutions that enable the house's electricity needs to be supplied byESS alone in the event of a power outage.

 

How does energy storage system work?

There are 3 working modes for choose from:

 

Mode 1 (Plan A): Self-generating and self-use

 

 PV priority: load > battery > grid

● Suitable for areas with high electricity price, low or no subsidy forsolar/energy system.

● PV supplies power to the load first, and the surplus power generated by the PV system is stored in the battery. When PV power generation is insufficient or there is no PV power generation at night, the battery discharges for the load, and theshortage is supplemented by the power grid. This mode improves the self-use rate of PV system and the self-sufficiency rate of household energy, and saves electricity expenses.

 

Examples of self-generating and self-use

(1)When PV illumination is sufficient, PV input power is 10kW, load consumption is 5kW, and charge power of energy storage system is 5kW.

(2)When PV illumination becomes weak, PV input power is 4kW, load consumption is 8kW, and discharge power of energy storage for load is 4kW.

(3)When there is no illumination, the load consumes 10KW, the energy storage discharges 8KW to the load, and the grid supplies 2KW to the load.                     

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Mode 1 (Plan B): Self-generating and self-use, surplus electricity fed to grid

PV priority: load > battery > grid

● Suitable for areas with high electricity price, low or no subsidy forsolar/energy system.

● PV supplies power to the load first, and the surplus generated power of PV is stored in the battery, and the surplus power is connected to the grid. When PV power generation is insufficient or there is no PV power generation at night, the battery discharges for the load, and theshortage is supplemented by the power grid. This mode improves the self-use rate of PV system and the self-sufficiency rate of household energy, and saves electricity expenses.

 

Example of working mode:

When PV illumination is sufficient, PV input power is 10kW, load consumption is 1kW,it willcharge powerto energy storage system 8kW, and discharge to power grid 1kW.

 

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Mode 2: Peak load shifting

Mode 2 (Plan A):PV priority: Battery > load > grid (charging)

Mode 2 (Plan B):PV priority: Load > battery > grid (discharging)

● It is suitable for scenarios where there is a large price difference between peak and valley electricity consumption.

The charging and discharging period is manually set. For example,charging during periods of low electricity prices at night and discharging during periods of high electricity prices during the day, so the battery can only discharge in the discharging period, thus saving the household electricity cost.

● Up to 3 periods can be set, the charging and discharging parameters can be setin APP.  

● This mode requires at least one set of charging period and discharging period. In the charging period, power grid is allowed to charge the energy storage system, and in the discharging period, the load can be supplied with power. Energy storage system does not discharge in other periods, PV and power grid supply power to the load. (In off-grid mode, the grid is powered down and theESS can discharge at any time.)

Example of peak load shifting

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Mode 3:Battery preferred (Standby)

PV priority: battery > load > grid

This mode is suitable for areas with frequent power outages. When the grid is disconnected, this mode ensures that the battery has enough energy stored to supply power.In this mode, the battery will be charged at the maximum set power and will never discharge when the grid is connected.

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* EPS status

When the grid is off, the system will provide emergency power through PV or battery to power the household load.


How does energy storage system work? 3 working modes for choose from. You must know when you sale Solar products.