diff --git a/src/main/scala/edu/ie3/simona/agent/participant/em/EmAgent.scala b/src/main/scala/edu/ie3/simona/agent/participant/em/EmAgent.scala
index af4af6991f..a35cd80808 100644
--- a/src/main/scala/edu/ie3/simona/agent/participant/em/EmAgent.scala
+++ b/src/main/scala/edu/ie3/simona/agent/participant/em/EmAgent.scala
@@ -631,7 +631,7 @@ class EmAgent(
         baseStateData.schedulerStateData.flexTrigger
       ) { case (flexTrigger, (uuid, issueCtrlMsg, _)) =>
         // send out flex control messages
-        scheduleFlexTrigger(flexTrigger, issueCtrlMsg, uuid)
+        scheduleFlexTriggerOnce(flexTrigger, issueCtrlMsg, uuid)
       }
 
       val updatedScheduledStateData = sendEligibleTrigger(
diff --git a/src/main/scala/edu/ie3/simona/agent/participant/em/EmSchedulerHelper.scala b/src/main/scala/edu/ie3/simona/agent/participant/em/EmSchedulerHelper.scala
index a4bbb562d6..30f74f0b36 100644
--- a/src/main/scala/edu/ie3/simona/agent/participant/em/EmSchedulerHelper.scala
+++ b/src/main/scala/edu/ie3/simona/agent/participant/em/EmSchedulerHelper.scala
@@ -113,7 +113,7 @@ trait EmSchedulerHelper {
     // schedule new flex requests, if applicable
     completionMessage.requestAtTick
       .foreach(newTick =>
-        scheduleFlexTrigger(
+        scheduleFlexTriggerOnce(
           triggerData,
           RequestFlexOptions(newTick),
           completionMessage.modelUuid
@@ -222,47 +222,34 @@ trait EmSchedulerHelper {
       flexTrigger: FlexTriggerData,
       participantUuids: Set[UUID],
       tick: Long
-  ): FlexTriggerData = {
-    val alreadyScheduled =
-      flexTrigger.triggerQueue
-        .get(tick)
-        .getOrElse(Seq.empty)
-        .map(_.modelUuid)
-
-    // participants that have to be activated at any next tick
-    val filteredUuids =
-      participantUuids
-        .filterNot {
-          // filter out duplicates here: we might have been scheduled
-          // for this tick anyways
-          alreadyScheduled.contains
-        }
-
-    // add missing activation triggers
-    val updatedFlexTrigger =
-      filteredUuids.foldLeft(flexTrigger) { case (schedulerData, modelUuid) =>
-        scheduleFlexTrigger(
-          schedulerData,
-          RequestFlexOptions(tick),
-          modelUuid
-        )
-      }
-
-    updatedFlexTrigger
-  }
+  ): FlexTriggerData =
+    participantUuids.foldLeft(flexTrigger) { case (schedulerData, modelUuid) =>
+      scheduleFlexTriggerOnce(
+        schedulerData,
+        RequestFlexOptions(tick),
+        modelUuid
+      )
+    }
 
-  protected def scheduleFlexTrigger(
+  protected def scheduleFlexTriggerOnce(
       flexTrigger: FlexTriggerData,
       trigger: Trigger with FlexibilityMessage,
       modelUuid: UUID
   ): FlexTriggerData = {
-    flexTrigger.triggerQueue.add(
-      trigger.tick,
-      ScheduledFlexTrigger(
-        trigger,
-        modelUuid
+    val scheduledTrigger = ScheduledFlexTrigger(trigger, modelUuid)
+
+    val alreadyScheduled =
+      flexTrigger.triggerQueue
+        .get(trigger.tick)
+        .getOrElse(Seq.empty)
+        .contains(scheduledTrigger)
+
+    if (!alreadyScheduled)
+      flexTrigger.triggerQueue.add(
+        trigger.tick,
+        scheduledTrigger
       )
-    )
+
     flexTrigger
   }
 
@@ -325,7 +312,7 @@ trait EmSchedulerHelper {
           triggerMessage.actorToBeScheduled
         )
         stateData.copy(
-          flexTrigger = scheduleFlexTrigger(
+          flexTrigger = scheduleFlexTriggerOnce(
             stateData.flexTrigger,
             flexMessage,
             uuid
diff --git a/src/main/scala/edu/ie3/simona/agent/participant/evcs/EvcsAgentFundamentals.scala b/src/main/scala/edu/ie3/simona/agent/participant/evcs/EvcsAgentFundamentals.scala
index 5edef687ae..96de92019d 100644
--- a/src/main/scala/edu/ie3/simona/agent/participant/evcs/EvcsAgentFundamentals.scala
+++ b/src/main/scala/edu/ie3/simona/agent/participant/evcs/EvcsAgentFundamentals.scala
@@ -44,7 +44,9 @@ import edu.ie3.simona.model.participant.evcs.EvcsModel.{
   EvcsRelevantData,
   EvcsState
 }
+import edu.ie3.simona.ontology.messages.FlexibilityMessage.RequestFlexOptions
 import edu.ie3.simona.ontology.messages.PowerMessage.AssetPowerChangedMessage
+import edu.ie3.simona.ontology.messages.SchedulerMessage.ScheduleTriggerMessage
 import edu.ie3.simona.ontology.messages.services.EvMessage._
 import edu.ie3.simona.util.SimonaConstants
 import edu.ie3.simona.util.TickUtil.{RichZonedDateTime, TickLong}
@@ -460,6 +462,10 @@ protected trait EvcsAgentFundamentals
 
     val newState = EvcsState(stayingEvs, stayingSchedules, tick)
 
+    baseStateData.flexStateData.foreach(
+      _.emAgent ! ScheduleTriggerMessage(RequestFlexOptions(tick), self)
+    )
+
     baseStateData.copy(
       stateDataStore = ValueStore.updateValueStore(
         baseStateData.stateDataStore,
diff --git a/src/test/scala/edu/ie3/simona/agent/participant/EvcsAgentModelCalculationSpec.scala b/src/test/scala/edu/ie3/simona/agent/participant/EvcsAgentModelCalculationSpec.scala
index d1a97b5d27..1a4c43af50 100644
--- a/src/test/scala/edu/ie3/simona/agent/participant/EvcsAgentModelCalculationSpec.scala
+++ b/src/test/scala/edu/ie3/simona/agent/participant/EvcsAgentModelCalculationSpec.scala
@@ -1535,6 +1535,10 @@ class EvcsAgentModelCalculationSpec
         DepartingEvsRequest(4500L, Seq(ev900.getUuid))
       )
 
+      emAgent.expectMsg(
+        ScheduleTriggerMessage(RequestFlexOptions(4500L), evcsAgent)
+      )
+
       evService.expectMsgPF() { case DepartingEvsResponse(uuid, evs) =>
         evs.size shouldBe 1
         uuid shouldBe evcsInputModel.getUuid
@@ -2151,6 +2155,10 @@ class EvcsAgentModelCalculationSpec
         DepartingEvsRequest(36000L, Seq(ev900.getUuid))
       )
 
+      emAgent.expectMsg(
+        ScheduleTriggerMessage(RequestFlexOptions(36000L), evcsAgent)
+      )
+
       evService.expectMsgPF() { case DepartingEvsResponse(uuid, evs) =>
         evs.size shouldBe 1
         uuid shouldBe evcsInputModel.getUuid