diff --git a/world/owniverse/owniverse_evolution.gd b/world/owniverse/owniverse_evolution.gd
index 565cbeb..5bd82ff 100644
--- a/world/owniverse/owniverse_evolution.gd
+++ b/world/owniverse/owniverse_evolution.gd
@@ -4,6 +4,8 @@ class_name OwniverseEvolution
 
 var entities: Dictionary[String, OwniverseEntity] = {}
 var producing_entities: Array[OwniverseEntity] = []
+var auto_producing_entities: Array[OwniverseEntity] = []
+var auto_production_rest: Dictionary[String, float] = {}
 var evolving_entities: Array[OwniverseEntity] = []
 
 var batches: Dictionary[String, Array] = {}
@@ -63,9 +65,23 @@ func process(from_year: float, to_year: float) -> void:
             
 
 func produce(from_year: float, to_year: float):
-    for batch_name in batches:
-        pass
-    
+    var _time_delta = to_year - from_year
+    # get entity array for production
+    for _entity: OwniverseEntity in producing_entities:
+        var _to_produce: float = 0
+        var _new_batch_array:= []
+        for _batch: Dictionary in batches[_entity.id]:
+            _to_produce += _batch.amount
+        # production
+        _to_produce *= _time_delta * _entity.product_per_year_amount
+        var _auto_production_part: float = 0
+        if _entity.auto > 0:
+            _auto_production_part = _entity.auto * _to_produce 
+            
+            # and rest
+            # energy = wasted vs rest !!
+        
+
 
 func init_entity(entity: OwniverseEntity) -> void:
     entities[entity.id] = entity
@@ -74,6 +90,10 @@ func init_entity(entity: OwniverseEntity) -> void:
 
     if entity.lifespan > 0:
         evolving_entities.append(entity)
+        
+    if entity.auto > 0:
+        auto_producing_entities.append(entity)
+        auto_production_rest[entity.id] = 0
 
     batches[entity.id] = []