diff --git a/code/modules/events/grid_check.dm b/code/modules/events/grid_check.dm
index c485827efb..40a38e2383 100644
--- a/code/modules/events/grid_check.dm
+++ b/code/modules/events/grid_check.dm
@@ -8,7 +8,8 @@
 	power_failure(0)
 
 /datum/event/grid_check/announce()
-	command_announcement.Announce("Abnormal activity detected in [station_name()]'s powernet. As a precautionary measure, the station's power will be shut off for an indeterminate duration.", "Automated Grid Check", new_sound = 'sound/AI/poweroff.ogg')
+	if (prob(30))
+		command_announcement.Announce("Abnormal activity detected in [station_name()]'s powernet. As a precautionary measure, the station's power will be shut off for an indeterminate duration.", "Automated Grid Check", new_sound = 'sound/AI/poweroff.ogg')
 
 /datum/event/grid_check/end()
 	power_restore()