diff --git a/homeassistant/components/powerwall/config_flow.py b/homeassistant/components/powerwall/config_flow.py
index 0946a71a01d..a00d1eaa041 100644
--- a/homeassistant/components/powerwall/config_flow.py
+++ b/homeassistant/components/powerwall/config_flow.py
@@ -166,7 +166,7 @@ class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
         description_placeholders: dict[str, str] = {}
         try:
             info = await validate_input(self.hass, user_input)
-        except PowerwallUnreachableError as ex:
+        except (PowerwallUnreachableError, asyncio.TimeoutError) as ex:
             errors[CONF_IP_ADDRESS] = "cannot_connect"
             description_placeholders = {"error": str(ex)}
         except WrongVersion as ex:
diff --git a/tests/components/powerwall/test_config_flow.py b/tests/components/powerwall/test_config_flow.py
index d79bf6c50f0..f9dcc4e1c83 100644
--- a/tests/components/powerwall/test_config_flow.py
+++ b/tests/components/powerwall/test_config_flow.py
@@ -4,6 +4,7 @@ import asyncio
 from datetime import timedelta
 from unittest.mock import MagicMock, patch
 
+import pytest
 from tesla_powerwall import (
     AccessDeniedError,
     MissingAttributeError,
@@ -60,15 +61,14 @@ async def test_form_source_user(hass: HomeAssistant) -> None:
     assert len(mock_setup_entry.mock_calls) == 1
 
 
-async def test_form_cannot_connect(hass: HomeAssistant) -> None:
+@pytest.mark.parametrize("exc", (PowerwallUnreachableError, asyncio.TimeoutError))
+async def test_form_cannot_connect(hass: HomeAssistant, exc: Exception) -> None:
     """Test we handle cannot connect error."""
     result = await hass.config_entries.flow.async_init(
         DOMAIN, context={"source": config_entries.SOURCE_USER}
     )
 
-    mock_powerwall = await _mock_powerwall_side_effect(
-        site_info=PowerwallUnreachableError
-    )
+    mock_powerwall = await _mock_powerwall_side_effect(site_info=exc)
 
     with patch(
         "homeassistant.components.powerwall.config_flow.Powerwall",