diff --git a/web_interface/blueprints/api_v3.py b/web_interface/blueprints/api_v3.py
index c0f65dcd..9bb73df8 100644
--- a/web_interface/blueprints/api_v3.py
+++ b/web_interface/blueprints/api_v3.py
@@ -1339,6 +1339,9 @@ def execute_system_action():
         elif action == 'reboot_system':
             result = subprocess.run(['sudo', 'reboot'],
                                  capture_output=True, text=True)
+        elif action == 'shutdown_system':
+            result = subprocess.run(['sudo', 'poweroff'],
+                                 capture_output=True, text=True)
         elif action == 'git_pull':
             # Use PROJECT_ROOT instead of hardcoded path
             project_dir = str(PROJECT_ROOT)
diff --git a/web_interface/templates/v3/partials/overview.html b/web_interface/templates/v3/partials/overview.html
index 7e8c30b8..36af1300 100644
--- a/web_interface/templates/v3/partials/overview.html
+++ b/web_interface/templates/v3/partials/overview.html
@@ -123,6 +123,16 @@
                 Reboot System
             </button>
 
+            <button hx-post="/api/v3/system/action"
+                    hx-vals='{"action": "shutdown_system"}'
+                    hx-confirm="Are you sure you want to shut down the system? This will power off the Raspberry Pi."
+                    hx-swap="none"
+                    hx-on:htmx:after-request="if (typeof showNotification !== 'undefined' && event.detail.xhr && event.detail.xhr.responseJSON) { showNotification(event.detail.xhr.responseJSON.message || 'System shutting down...', event.detail.xhr.responseJSON.status || 'info'); }"
+                    class="inline-flex items-center px-4 py-2 border border-transparent text-base font-semibold rounded-md text-white bg-red-800 hover:bg-red-900">
+                <i class="fas fa-power-off mr-2"></i>
+                Shutdown System
+            </button>
+
             <button hx-post="/api/v3/system/action"
                     hx-vals='{"action": "restart_display_service"}'
                     hx-swap="none"