diff --git a/core/src/mindustry/core/NetClient.java b/core/src/mindustry/core/NetClient.java
index da52f23269..6d01275325 100644
--- a/core/src/mindustry/core/NetClient.java
+++ b/core/src/mindustry/core/NetClient.java
@@ -1,6 +1,7 @@
 package mindustry.core;
 
 import arc.*;
+import arc.audio.*;
 import arc.func.*;
 import arc.graphics.*;
 import arc.math.*;
@@ -159,8 +160,6 @@ public class NetClient implements ApplicationListener{
         clientPacketReliable(type, contents);
     }
 
-    //TODO enable in build 129
-    /*
     @Remote(variants = Variant.both, unreliable = true)
     public static void sound(Sound sound, float volume, float pitch, float pan){
         if(sound == null) return;
@@ -173,7 +172,7 @@ public class NetClient implements ApplicationListener{
         if(sound == null) return;
 
         sound.at(x, y, pitch, volume);
-    }*/
+    }
 
     @Remote(variants = Variant.both, unreliable = true)
     public static void effect(Effect effect, float x, float y, float rotation, Color color){
diff --git a/core/src/mindustry/world/blocks/power/PowerGenerator.java b/core/src/mindustry/world/blocks/power/PowerGenerator.java
index 5a2bd12f0d..fe86c5fd15 100644
--- a/core/src/mindustry/world/blocks/power/PowerGenerator.java
+++ b/core/src/mindustry/world/blocks/power/PowerGenerator.java
@@ -61,16 +61,25 @@ public class PowerGenerator extends PowerDistributor{
             return powerProduction * productionEfficiency;
         }
 
+        @Override
+        public byte version(){
+            return 1;
+        }
+
         @Override
         public void write(Writes write){
             super.write(write);
             write.f(productionEfficiency);
+            write.f(generateTime);
         }
 
         @Override
         public void read(Reads read, byte revision){
             super.read(read, revision);
             productionEfficiency = read.f();
+            if(revision >= 1){
+                generateTime = read.f();
+            }
         }
     }
 }