Setting Up Peak Shaving on a Growatt Inverter – 4Blue B.V.

With peak shaving, you use energy from the battery to absorb high consumption peaks. This prevents the maximum capacity of the grid connection from being exceeded. For peak shaving, you need a Growatt hybrid inverter and a compatible battery.

This article explains how to set up peak shaving on a single Growatt inverter. Are you using multiple inverters within one installation? Then you set up peak shaving via the ShineSEM/Shinemaster-X or grohomemanager-X.

What is peak shaving?

Peak shaving literally means ‘flattening peaks’. The function is used to absorb short moments of high power consumption with power from the battery.

This is especially useful at locations where the grid connection can become temporarily overloaded. Think, for example, of a building where multiple heavy consumers are switched on simultaneously.

Without peak shaving, the full power at that moment is drawn from the electricity grid. With peak shaving, the battery supplies part of the required power so that the load on the grid connection remains below the set limit.

Example: a 3 x 25 A connection

A 3 x 25 A connection can theoretically deliver approximately 17.25 kW from the electricity grid.

The calculation is:

3 × 230 V × 25 A = 17,250 W

This corresponds to approximately 17.25 kW.

Suppose the consumption of the installation temporarily rises to 20 kW. This is more than the grid connection can/may deliver at that address.

With peak shaving, the battery can absorb the difference:

installation consumption: 20 kW;
maximum power from the grid: 17.25 kW;
required power from the battery: 2.75 kW.

This way, the power drawn from the electricity grid remains below the set limit.

Note: always allow for a safety margin in practice. Do not automatically set the limit exactly equal to the theoretical maximum capacity of the connection.

What do you need?

To use peak shaving, you need at least:

a Growatt hybrid inverter;
a compatible Growatt battery;
a proper connection with a smart meter or energy meter;
access to the installation;

All Growatt inverter/battery systems support this function.

Setting up peak shaving

You can set up peak shaving via the OSS portal, ShinePhone app, and ShineTools app.

Via OSS

Step 1:

Log in at https://oss.growatt.com/ with your installer account
Navigate to the installation under "Monitoring & Management"
- "Device List"
- Search for the SN
- Click on the gear icon.
This can also be done via "Plant List"
- Search the installation by plant name or account
- Double click on the plant
- Scroll down and select the inverter in the device list. Here too, click on the gear icon.
Click on "Read" at the top to read the current data
Navigate to "Peak Shaving Mode Settings"
- Click on "Enable" and set the import and export limits.
Click "Yes" below and peak shaving is set up.
It is also possible to reserve part of the battery for peak shaving; if desired, set this in "Reserved SOC for Peak Shaving enable" & "Reserved SOC for Peak Shaving"

Via ShinePhone

Open the ShinePhone app and log in with the account managing the installation.

Step 1: open the installation

Open ShinePhone.
Select the correct installation.
Open the relevant Growatt inverter in the device list.
Go to Settings, Parameter Settings

The exact name of the menu may vary depending on the ShinePhone version and inverter model.

Step 2: open the settings for peak shaving

Go to the menu for energy management or power control.

Look for a setting such as:

Peak Shaving;
Grid Import Limit;
Load Peak Shaving;
Import Power Limit.

Step 3: enable peak shaving

Set the function to Enable or On.

If requested, enter the installer password. Without installer rights, certain settings may not be changeable.

password: growattYYYYmmdd - example: growatt20260727

Step 4: check the battery settings

Check whether the battery has enough power and capacity available to absorb peaks.

Pay attention to settings such as:

minimum state of charge of the battery;
maximum discharge power;
allowed discharge period;
battery reserve;
operating mode of the storage system.

Step 5: save the settings

Confirm the chosen values and save the settings.

Check whether peak shaving works

Test the operation at a moment when consumption exceeds the set limit.

When peak shaving works properly, the grid power remains around or below the set limit. The remaining power is supplied by the battery.

Peak shaving does not work: what can you check?

If the function does not work as expected, check the following points:

is peak shaving actually enabled;
is the smart meter or energy meter correctly connected;
is the direction of energy measurement correct;
is the battery available and sufficiently charged;
is the battery allowed to discharge at that moment;
is the maximum discharge power set high enough;
is the set limit lower than the actual consumption;
does the firmware used support this function;
are the settings correctly saved;
can the system deliver the total power requested.

Also check whether the meter measures the total import power of the entire installation. If the meter is placed incorrectly, the inverter cannot properly regulate the grid consumption.

Multiple Growatt Inverters - ShineSEM/Shinemaster

In an installation with multiple inverters, peak shaving is centrally set via the ShineSEM or ShineMaster-X.

The central controller measures and monitors the total power of the installation. It then distributes the required power control over the connected devices.

Do not set peak shaving separately on each inverter via ShinePhone in such an installation. This can lead to incorrect or conflicting control.

Setting up peak shaving on the ShineSEM/Shinemaster:

Log in at https://oss.growatt.com/ with your installer account
Navigate to the installation under "Monitoring & Management
Click on "Plant List"
- Search the installation by plant name or account
- Double click on the plant
- Scroll down and select the datalogger in the device list.
- Then click next to the gear icon on "System settings" (see image below)
Values for import and export can be set here under 'Feed power parameters' = Export
'Demand Management' = Import, here you also reserve part of the battery for peak shaving.

This can also be set directly when you log in locally to the Shinemaster X; please consult the manual for this.

Need help setting up?

Can’t figure it out or does the recorded grid power remain above the set limit? First check the meter configuration, battery settings, and software versions.

Are you an installer with a 4blue account? Then contact 4blue. Preferably include the following with your request:

the type of Growatt inverter;
the type of battery;
the type of energy meter;
the capacity of the grid connection;
screenshots of the ShinePhone settings;

(024) 204 20 90

support@4blue.nl