diff --git a/core/loadpoint_plan.go b/core/loadpoint_plan.go
index 13513f33a..4faddae61 100644
--- a/core/loadpoint_plan.go
+++ b/core/loadpoint_plan.go
@@ -113,6 +113,7 @@ func (lp *Loadpoint) plannerActive() (active bool) {
 
 	planTime := lp.EffectivePlanTime()
 	if planTime.IsZero() {
+		lp.log.DEBUG.Println("!! plan: plan time zero")
 		return false
 	}
 
@@ -131,6 +132,7 @@ func (lp *Loadpoint) plannerActive() (active bool) {
 		if lp.planActive && isSocBased && goal == 100 {
 			return true
 		}
+		lp.log.DEBUG.Println("!! plan: required duration 0")
 
 		lp.finishPlan()
 		return false
@@ -140,6 +142,7 @@ func (lp *Loadpoint) plannerActive() (active bool) {
 
 	plan = lp.GetPlan(planTime, requiredDuration, strategy.Precondition, strategy.Continuous)
 	if plan == nil {
+		lp.log.DEBUG.Println("!! plan: plan nil")
 		return false
 	}