diff --git a/core/src/mindustry/world/blocks/power/PowerGenerator.java b/core/src/mindustry/world/blocks/power/PowerGenerator.java
index fb77b987a1..9b0ef63732 100644
--- a/core/src/mindustry/world/blocks/power/PowerGenerator.java
+++ b/core/src/mindustry/world/blocks/power/PowerGenerator.java
@@ -102,7 +102,7 @@ public class PowerGenerator extends PowerDistributor{
 
         @Override
         public float warmup(){
-            return productionEfficiency;
+            return enabled ? productionEfficiency : 0f;
         }
 
         @Override
@@ -154,7 +154,7 @@ public class PowerGenerator extends PowerDistributor{
 
         @Override
         public float getPowerProduction(){
-            return powerProduction * productionEfficiency;
+            return enabled ? powerProduction * productionEfficiency : 0f;
         }
 
         @Override
diff --git a/core/src/mindustry/world/blocks/power/ThermalGenerator.java b/core/src/mindustry/world/blocks/power/ThermalGenerator.java
index 9195205a9f..9c71e77ca8 100644
--- a/core/src/mindustry/world/blocks/power/ThermalGenerator.java
+++ b/core/src/mindustry/world/blocks/power/ThermalGenerator.java
@@ -88,6 +88,11 @@ public class ThermalGenerator extends PowerGenerator{
             }
         }
 
+        @Override
+        public float totalProgress(){
+            return enabled ? super.totalProgress() : 0f;
+        }
+
         @Override
         public void drawLight(){
             Drawf.light(x, y, (40f + Mathf.absin(10f, 5f)) * Math.min(productionEfficiency, 2f) * size, Color.scarlet, 0.4f);
diff --git a/core/src/mindustry/world/blocks/sandbox/PowerSource.java b/core/src/mindustry/world/blocks/sandbox/PowerSource.java
index 3a8685bb5e..0e011c9bac 100644
--- a/core/src/mindustry/world/blocks/sandbox/PowerSource.java
+++ b/core/src/mindustry/world/blocks/sandbox/PowerSource.java
@@ -11,11 +11,20 @@ public class PowerSource extends PowerNode{
         maxNodes = 100;
         outputsPower = true;
         consumesPower = false;
+        drawDisabled = true;
         //TODO maybe don't?
         envEnabled = Env.any;
     }
 
     public class PowerSourceBuild extends PowerNodeBuild{
+        @Override
+        public void onProximityUpdate(){
+            super.onProximityUpdate();
+            if(!allowUpdate()){
+                enabled = false;
+            }
+        }
+
         @Override
         public float getPowerProduction(){
             return enabled ? powerProduction : 0f;
diff --git a/core/src/mindustry/world/blocks/units/UnitAssembler.java b/core/src/mindustry/world/blocks/units/UnitAssembler.java
index f77f2119ac..2d2a40115e 100644
--- a/core/src/mindustry/world/blocks/units/UnitAssembler.java
+++ b/core/src/mindustry/world/blocks/units/UnitAssembler.java
@@ -373,12 +373,12 @@ public class UnitAssembler extends PayloadBlock{
                 units.clear();
             }
 
-            float powerStatus = power == null ? 1f : power.status;
+            float powerStatus = !enabled ? 0f : power == null ? 1f : power.status;
             powerWarmup = Mathf.lerpDelta(powerStatus, powerStatus > 0.0001f ? 1f : 0f, 0.1f);
             droneWarmup = Mathf.lerpDelta(droneWarmup, units.size < dronesCreated ? powerStatus : 0f, 0.1f);
             totalDroneProgress += droneWarmup * delta();
 
-            if(units.size < dronesCreated && (droneProgress += delta() * state.rules.unitBuildSpeed(team) * powerStatus / droneConstructTime) >= 1f){
+            if(units.size < dronesCreated && enabled && (droneProgress += delta() * state.rules.unitBuildSpeed(team) * powerStatus / droneConstructTime) >= 1f){
                 if(!net.client()){
                     var unit = droneType.create(team);
                     if(unit instanceof BuildingTetherc bt){