diff --git a/scripts/encender_sobremesa.py b/scripts/encender_sobremesa.py
index 8b4196e..910a4c7 100644
--- a/scripts/encender_sobremesa.py
+++ b/scripts/encender_sobremesa.py
@@ -30,6 +30,14 @@ if str(_SCRIPTS_DIR) not in sys.path:
     sys.path.insert(0, str(_SCRIPTS_DIR))
 import infra_paths  # noqa: E402
 
+# Cargar variables de entorno (HOMEASSISTANT_URL/TOKEN) del repo de negocio.
+try:
+    from dotenv import load_dotenv
+
+    load_dotenv(infra_paths.biblioteca_repo() / ".env")
+except Exception as _e:  # pragma: no cover
+    print(f"[encender_sobremesa] Aviso: no se pudo cargar .env: {_e}", file=sys.stderr)
+
 TS_EXE = os.path.join(os.environ.get("ProgramFiles", r"C:\Program Files"), "Tailscale", "tailscale.exe")
 NODO = "desktop-m8se61g"
 COS_ENCENDER = "enciende regleta"