diff --git a/_modules/maas.py b/_modules/maas.py
index 1e974cb..9ba76e5 100644
--- a/_modules/maas.py
+++ b/_modules/maas.py
@@ -411,9 +411,10 @@
             'hostname': name,
             'architecture': machine_data.get('architecture', 'amd64/generic'),
             'mac_addresses': machine_pxe_mac,
-            'power_type': machine_data.get('power_type', 'ipmi'),
-            'power_parameters_power_address': power_data['power_address'],
+            'power_type': power_data.get('power_type', 'manual'),
         }
+        if 'power_address' in power_data:
+            data['power_parameters_power_address'] = power_data['power_address']
         if 'power_driver' in power_data:
             data['power_parameters_power_driver'] = power_data['power_driver']
         if 'power_user' in power_data: