diff --git a/include/ddk/ntpoapi.h b/include/ddk/ntpoapi.h
index 01f45935fdd..54f70b6ac4c 100644
--- a/include/ddk/ntpoapi.h
+++ b/include/ddk/ntpoapi.h
@@ -270,6 +270,39 @@ typedef struct _PROCESSOR_POWER_INFORMATION {
   ULONG  CurrentIdleState;
 } PROCESSOR_POWER_INFORMATION, *PPROCESSOR_POWER_INFORMATION;
 
+typedef struct _POWER_ACTION_POLICY {
+    POWER_ACTION Action;
+    ULONG Flags;
+    ULONG EventCode;
+} POWER_ACTION_POLICY, *PPOWER_ACTION_POLICY;
+
+/* POWER_ACTION_POLICY.Flags constants */
+#define POWER_ACTION_QUERY_ALLOWED        0x00000001
+#define POWER_ACTION_UI_ALLOWED           0x00000002
+#define POWER_ACTION_OVERRIDE_APPS        0x00000004
+#define POWER_ACTION_LIGHTEST_FIRST       0x10000000
+#define POWER_ACTION_LOCK_CONSOLE         0x20000000
+#define POWER_ACTION_DISABLE_WAKES        0x40000000
+#define POWER_ACTION_CRITICAL             0x80000000
+
+/* POWER_ACTION_POLICY.EventCode constants */
+#define POWER_LEVEL_USER_NOTIFY_TEXT      0x00000001
+#define POWER_LEVEL_USER_NOTIFY_SOUND     0x00000002
+#define POWER_LEVEL_USER_NOTIFY_EXEC      0x00000004
+#define POWER_USER_NOTIFY_BUTTON          0x00000008
+#define POWER_USER_NOTIFY_SHUTDOWN        0x00000010
+#define POWER_FORCE_TRIGGER_RESET         0x80000000
+
+#define DISCHARGE_POLICY_CRITICAL	0
+#define DISCHARGE_POLICY_LOW		1
+#define NUM_DISCHARGE_POLICIES		4
+
+#define PO_THROTTLE_NONE	0
+#define PO_THROTTLE_CONSTANT	1
+#define PO_THROTTLE_DEGRADE	2
+#define PO_THROTTLE_ADAPTIVE	3
+#define PO_THROTTLE_MAXIMUM	4
+
 #ifdef __cplusplus
 }
 #endif