diff --git a/src/solver/variable/state.cpp b/src/solver/variable/state.cpp
index 587dfc324b..5ce943d314 100644
--- a/src/solver/variable/state.cpp
+++ b/src/solver/variable/state.cpp
@@ -361,6 +361,9 @@ void State::yearEndBuildFromThermalClusterIndex(const uint clusterAreaWideIndex)
         {
             ON_max[h] = ON_min[h];
         }
+
+        Antares::logs.notice() << "ON_min for hour " << h << "  : " << ON_min[h];
+        Antares::logs.notice() << "ON_max for hour " << h << "  : " << ON_max[h];
     }
 
     if (maxDurationON > 0)
@@ -400,6 +403,8 @@ void State::yearEndBuildThermalClusterCalculateStartupCosts(
             optimalCount = currentCluster->unitCount;
         }
 
+        Antares::logs.notice() << "Optimal count tronc for hour " << hour << "  : " << optimalCount;
+
         thermalClusterFixedCostForYear = currentCluster->fixedCost * optimalCount;
 
         if (hour >= startHourForCurrentYear + 1) // starting hour +1 (fron start hour)