diff --git a/homeassistant/components/teslemetry/coordinator.py b/homeassistant/components/teslemetry/coordinator.py
index 75794c7cdec..be34386a508 100644
--- a/homeassistant/components/teslemetry/coordinator.py
+++ b/homeassistant/components/teslemetry/coordinator.py
@@ -119,7 +119,7 @@ class TeslemetryEnergyDataCoordinator(TeslemetryDataCoordinator):
 
         # Convert Wall Connectors from array to dict
         data["response"]["wall_connectors"] = {
-            wc["din"]: wc for wc in data["response"].get("wall_connectors", [])
+            wc["din"]: wc for wc in (data["response"].get("wall_connectors") or [])
         }
 
         return data["response"]