diff --git a/xyz/openbmc_project/Control/Power/Cap.interface.yaml b/xyz/openbmc_project/Control/Power/Cap.interface.yaml
index e15bffa..2994b14 100644
--- a/xyz/openbmc_project/Control/Power/Cap.interface.yaml
+++ b/xyz/openbmc_project/Control/Power/Cap.interface.yaml
@@ -7,3 +7,9 @@
       description: >
           Power cap value. This could for example be specified in absolute
           wattage. The unit of measurement must be Watts.
+
+    - name: PowerCapEnable
+      type: boolean
+      description: >
+          Power cap enable.  Set to true to enable the PowerCap, false
+          to disable it.