diff --git a/homeassistant/components/discovergy/__init__.py b/homeassistant/components/discovergy/__init__.py
index 0a8b7422f84..65687debd3a 100644
--- a/homeassistant/components/discovergy/__init__.py
+++ b/homeassistant/components/discovergy/__init__.py
@@ -11,6 +11,7 @@ from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed, ConfigEntryNotReady
 from homeassistant.helpers.httpx_client import create_async_httpx_client
 
+from .const import DOMAIN
 from .coordinator import DiscovergyConfigEntry, DiscovergyUpdateCoordinator
 
 PLATFORMS = [Platform.SENSOR]
@@ -30,10 +31,14 @@ async def async_setup_entry(hass: HomeAssistant, entry: DiscovergyConfigEntry) -
         # if no exception is raised everything is fine to go
         meters = await client.meters()
     except discovergyError.InvalidLogin as err:
-        raise ConfigEntryAuthFailed("Invalid email or password") from err
+        raise ConfigEntryAuthFailed(
+            translation_domain=DOMAIN,
+            translation_key="invalid_auth",
+        ) from err
     except Exception as err:
         raise ConfigEntryNotReady(
-            "Unexpected error while while getting meters"
+            translation_domain=DOMAIN,
+            translation_key="cannot_connect_meters_setup",
         ) from err
 
     # Init coordinators for meters
diff --git a/homeassistant/components/discovergy/coordinator.py b/homeassistant/components/discovergy/coordinator.py
index e3f26ad49f8..2c77ab2388e 100644
--- a/homeassistant/components/discovergy/coordinator.py
+++ b/homeassistant/components/discovergy/coordinator.py
@@ -14,6 +14,8 @@ from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
+from .const import DOMAIN
+
 _LOGGER = logging.getLogger(__name__)
 
 type DiscovergyConfigEntry = ConfigEntry[list[DiscovergyUpdateCoordinator]]
@@ -51,7 +53,12 @@ class DiscovergyUpdateCoordinator(DataUpdateCoordinator[Reading]):
             )
         except InvalidLogin as err:
             raise ConfigEntryAuthFailed(
-                "Auth expired while fetching last reading"
+                translation_domain=DOMAIN,
+                translation_key="invalid_auth",
             ) from err
         except (HTTPError, DiscovergyClientError) as err:
-            raise UpdateFailed(f"Error while fetching last reading: {err}") from err
+            raise UpdateFailed(
+                translation_domain=DOMAIN,
+                translation_key="reading_update_failed",
+                translation_placeholders={"meter_id": self.meter.meter_id},
+            ) from err
diff --git a/homeassistant/components/discovergy/quality_scale.yaml b/homeassistant/components/discovergy/quality_scale.yaml
index 56af1d97304..a8f140f258c 100644
--- a/homeassistant/components/discovergy/quality_scale.yaml
+++ b/homeassistant/components/discovergy/quality_scale.yaml
@@ -72,12 +72,16 @@ rules:
   entity-device-class: done
   entity-disabled-by-default: done
   entity-translations: done
-  exception-translations: todo
+  exception-translations: done
   icon-translations:
     status: exempt
     comment: |
       The integration does not provide any additional icons.
-  reconfiguration-flow: todo
+  reconfiguration-flow:
+    status: exempt
+    comment: |
+      No configuration besides credentials.
+      New credentials will create a new config entry.
   repair-issues:
     status: exempt
     comment: |
diff --git a/homeassistant/components/discovergy/strings.json b/homeassistant/components/discovergy/strings.json
index 0058f874a36..911a4a1c4f5 100644
--- a/homeassistant/components/discovergy/strings.json
+++ b/homeassistant/components/discovergy/strings.json
@@ -23,6 +23,17 @@
       "reauth_successful": "[%key:common::config_flow::abort::reauth_successful%]"
     }
   },
+  "exceptions": {
+    "invalid_auth": {
+      "message": "Authentication failed. Please check your inexogy email and password."
+    },
+    "cannot_connect_meters_setup": {
+      "message": "Failed to connect and retrieve meters from inexogy during setup. Please ensure the service is reachable and try again."
+    },
+    "reading_update_failed": {
+      "message": "Error fetching the latest reading for meter {meter_id} from inexogy. The service might be temporarily unavailable or there's a connection issue. Check logs for more details."
+    }
+  },
   "system_health": {
     "info": {
       "api_endpoint_reachable": "inexogy API endpoint reachable"