Fixed #4043

core/src/mindustry/world/blocks/power/ItemLiquidGenerator.java

@@ -92,11 +92,6 @@ public class ItemLiquidGenerator extends PowerGenerator{
             return generateTime > 0;
         }
 
-        @Override
-        public float ambientVolume(){
-            return Mathf.clamp(productionEfficiency);
-        }
-
         @Override
         public void updateTile(){
             //Note: Do not use this delta when calculating the amount of power or the power efficiency, but use it for resource consumption if necessary.

core/src/mindustry/world/blocks/power/PowerGenerator.java

@@ -1,6 +1,7 @@
 package mindustry.world.blocks.power;
 
 import arc.*;
+import arc.math.*;
 import arc.struct.*;
 import arc.util.*;
 import arc.util.io.*;
@@ -50,6 +51,11 @@ public class PowerGenerator extends PowerDistributor{
         /** The efficiency of the producer. An efficiency of 1.0 means 100% */
         public float productionEfficiency = 0.0f;
 
+        @Override
+        public float ambientVolume(){
+            return Mathf.clamp(productionEfficiency);
+        }
+
         @Override
         public float getPowerProduction(){
             return powerProduction * productionEfficiency;