diff --git a/PV_Visu/module.php b/PV_Visu/module.php
index 1240ed9..50d7166 100644
--- a/PV_Visu/module.php
+++ b/PV_Visu/module.php
@@ -107,9 +107,9 @@ class PV_Visu extends IPSModule
         $feed   = $this->GetDailyTotal($this->ReadPropertyInteger('VarFeedIn'),      $start, $end);
         $grid   = $this->GetDailyTotal($this->ReadPropertyInteger('VarGrid'),        $start, $end);
 
-        $prodCons = $prod > 0 ? ($cons  / $prod) * 100 : 0;
+        $prodCons = $prod > 0 ? (($cons-$grid)  / $prod) * 100 : 0;
         $prodFeed = $prod > 0 ? ($feed  / $prod) * 100 : 0;
-        $consPV   = $cons > 0 ? min($prod, $cons) / $cons * 100 : 0;
+        $consPV   = $cons > 0 ? min($prod, ($cons-$grid)) / $cons * 100 : 0;
         $consGrid = $cons > 0 ? ($grid  / $cons) * 100 : 0;
 
         $data = [