diff --git a/src/window.py b/src/window.py
index f07d811..e4aec48 100644
--- a/src/window.py
+++ b/src/window.py
@@ -128,6 +128,8 @@ class AlpacaWindow(Adw.ApplicationWindow):
     remote_connection_entry = Gtk.Template.Child()
     remote_bearer_token_entry = Gtk.Template.Child()
 
+    banner = Gtk.Template.Child()
+
     style_manager = Adw.StyleManager()
 
     @Gtk.Template.Callback()
@@ -817,6 +819,9 @@ Generate a title following these rules:
 
     def __init__(self, **kwargs):
         super().__init__(**kwargs)
+        Gio.PowerProfileMonitor.dup_default().connect("notify::power-saver-enabled", lambda monitor, *_: self.banner.set_revealed(monitor.get_power_saver_enabled()))
+        self.banner.connect('button-clicked', lambda *_: self.banner.set_revealed(False))
+
         message_widget.window = self
         chat_widget.window = self
         model_widget.window = self
diff --git a/src/window.ui b/src/window.ui
index b5301bb..bac129f 100644
--- a/src/window.ui
+++ b/src/window.ui
@@ -78,6 +78,13 @@
                     <property name="orientation">1</property>
                     <property name="vexpand">true</property>
                     <property name="hexpand">true</property>
+                    <child>
+                      <object class="AdwBanner" id="banner">
+                        <property name="button-label" translatable="true">Close</property>
+                        <property name="title" translatable="yes">Warning: Power saver mode is enabled, this will slow down message generation</property>
+                        <property name="revealed">true</property>
+                      </object>
+                    </child>
                     <child>
                     <object class="AdwToastOverlay" id="main_overlay">
                     <child>