diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java
index 9ec70f94eb..3b635d65c5 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSettingsPreferenceConst.java
@@ -680,6 +680,7 @@ public class DeviceSettingsPreferenceConst {
     public static final String PREF_BATTERY_MAXIMUM_CHARGE = "battery_maximum_charge";
     public static final String PREF_BATTERY_ALLOW_PASS_THROUGH = "battery_allow_pass_through";
     public static final String PREF_OUTPUT_POWER_GRID = "output_power_grid";
+    public static final String PREF_OFFGRID_MODE = "offgrid_mode";
 
     public static final String PREF_DISPLAY_ENABLED = "display_enabled";
     public static final String PREF_DISPLAY_ENABLED_ALL_DAY = "display_all_day";
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSpecificSettingsFragment.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSpecificSettingsFragment.java
index 025083d94d..4f8477f576 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSpecificSettingsFragment.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/devicesettings/DeviceSpecificSettingsFragment.java
@@ -1004,6 +1004,7 @@ public class DeviceSpecificSettingsFragment extends AbstractPreferenceFragment i
         addPreferenceHandlerFor(PREF_BATTERY_MAXIMUM_CHARGE);
         addPreferenceHandlerFor(PREF_BATTERY_ALLOW_PASS_THROUGH);
         addPreferenceHandlerFor(PREF_OUTPUT_POWER_GRID);
+        addPreferenceHandlerFor(PREF_OFFGRID_MODE);
 
         addPreferenceHandlerFor(PREF_DISPLAY_ENABLED);
         addPreferenceHandlerFor(PREF_DISPLAY_ENABLED_ALL_DAY);
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/zendure/SolarFlowDeviceCoordinator.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/zendure/SolarFlowDeviceCoordinator.java
index a394bfd47a..2824435029 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/zendure/SolarFlowDeviceCoordinator.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/zendure/SolarFlowDeviceCoordinator.java
@@ -93,6 +93,7 @@ public class SolarFlowDeviceCoordinator extends AbstractBLEDeviceCoordinator {
                 R.xml.devicesettings_battery_minimum_charge,
                 R.xml.devicesettings_battery_maximum_charge,
                 R.xml.devicesettings_output_power_grid,
+                R.xml.devicesettings_offgrid_mode_on_off_eco
         };
     }
 
diff --git a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/zendure/SolarFlowDeviceSupport.java b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/zendure/SolarFlowDeviceSupport.java
index 91a20457b3..ff60d211b7 100644
--- a/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/zendure/SolarFlowDeviceSupport.java
+++ b/app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/zendure/SolarFlowDeviceSupport.java
@@ -18,6 +18,7 @@ package nodomain.freeyourgadget.gadgetbridge.service.devices.zendure;
 
 import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_BATTERY_MAXIMUM_CHARGE;
 import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_BATTERY_MINIMUM_CHARGE;
+import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_OFFGRID_MODE;
 import static nodomain.freeyourgadget.gadgetbridge.activities.devicesettings.DeviceSettingsPreferenceConst.PREF_OUTPUT_POWER_GRID;
 
 import android.bluetooth.BluetoothGatt;
@@ -58,6 +59,7 @@ public class SolarFlowDeviceSupport extends AbstractBTLESingleDeviceSupport {
     private int solarPower3 = -1;
     private int solarPower4 = -1;
     private int gridOffPower = -1;
+    private int gridOffMode = -1;
     private int outputHomePower = -1;
     private int minSoc = -1;
     private int socSet = -1;
@@ -178,6 +180,15 @@ public class SolarFlowDeviceSupport extends AbstractBTLESingleDeviceSupport {
                 if (outputLimit > 2400) outputLimit = 2400;
                 sendWriteProperty("outputLimit", outputLimit);
             }
+            case PREF_OFFGRID_MODE -> {
+                String offGridMode = devicePrefs.getString(PREF_OFFGRID_MODE, "off");
+                int gridOffMode = switch (offGridMode) {
+                    case "on" -> 0;
+                    case "eco" -> 1;
+                    default -> 2;
+                };
+                sendWriteProperty("gridOffMode", gridOffMode);
+            }
             default -> LOG.warn("Unknown config changed: {}", config);
         }
     }
@@ -198,7 +209,6 @@ public class SolarFlowDeviceSupport extends AbstractBTLESingleDeviceSupport {
         }
 
 
-
     }
 
     private void sendMessage(JSONObject message) {
@@ -222,6 +232,9 @@ public class SolarFlowDeviceSupport extends AbstractBTLESingleDeviceSupport {
             if (properties.has("gridOffPower")) {
                 gridOffPower = properties.getInt("gridOffPower");
             }
+            if (properties.has("gridOffMode")) {
+                gridOffMode = properties.getInt("gridOffMode");
+            }
             if (properties.has("outputHomePower")) {
                 outputHomePower = properties.getInt("outputHomePower");
             }
@@ -306,6 +319,12 @@ public class SolarFlowDeviceSupport extends AbstractBTLESingleDeviceSupport {
         devicePrefsEdit.putString(PREF_BATTERY_MINIMUM_CHARGE, String.valueOf(minSoc));
         devicePrefsEdit.putString(PREF_BATTERY_MAXIMUM_CHARGE, String.valueOf(socSet));
         devicePrefsEdit.putString(PREF_OUTPUT_POWER_GRID, String.valueOf(outputLimit));
+        String offGridMode = switch (gridOffMode) {
+            case 0 -> "on";
+            case 1 -> "eco";
+            default -> "off";
+        };
+        devicePrefsEdit.putString(PREF_OFFGRID_MODE, offGridMode);
         devicePrefsEdit.apply();
         devicePrefsEdit.commit();
     }
diff --git a/app/src/main/res/values/arrays.xml b/app/src/main/res/values/arrays.xml
index 4a484083e1..2294601b6f 100644
--- a/app/src/main/res/values/arrays.xml
+++ b/app/src/main/res/values/arrays.xml
@@ -5316,4 +5316,15 @@
         <item>pound</item>
         <item>stone</item>
     </string-array>
+
+    <string-array name="offgrid_mode_on_off_eco">
+        <item>@string/on</item>
+        <item>@string/off</item>
+        <item>@string/eco</item>
+    </string-array>
+    <string-array name="offgrid_mode_on_off_eco_values">
+        <item>on</item>
+        <item>off</item>
+        <item>eco</item>
+    </string-array>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 2a0792a075..b4f2a32711 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -4483,4 +4483,6 @@
     <string name="internet_helper_banglejs_permission_missing_title">Permission missing</string>
     <string name="internet_helper_banglejs_permission_missing_text">Access to the Bangle.js app loader is currently not allowed by your settings. Please go to the internet helper settings in the external integrations settings to enable it.</string>
     <string name="devicetype_solarflow">SolarFlow</string>
+    <string name="eco">Eco</string>
+    <string name="prefs_title_offgrid_mode">Off-grid mode</string>
 </resources>
diff --git a/app/src/main/res/xml/devicesettings_offgrid_mode_on_off_eco.xml b/app/src/main/res/xml/devicesettings_offgrid_mode_on_off_eco.xml
new file mode 100644
index 0000000000..f34bf56e4d
--- /dev/null
+++ b/app/src/main/res/xml/devicesettings_offgrid_mode_on_off_eco.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <ListPreference
+        android:defaultValue="@string/p_off"
+        android:entries="@array/offgrid_mode_on_off_eco"
+        android:entryValues="@array/offgrid_mode_on_off_eco_values"
+        android:key="offgrid_mode"
+        app:useSimpleSummaryProvider="true"
+        android:title="@string/prefs_title_offgrid_mode" />
+
+</androidx.preference.PreferenceScreen>