diff --git a/src/main/java/com/hbm/blocks/machine/ReactorZirnox.java b/src/main/java/com/hbm/blocks/machine/ReactorZirnox.java
index b9b448ef5..1316a02eb 100644
--- a/src/main/java/com/hbm/blocks/machine/ReactorZirnox.java
+++ b/src/main/java/com/hbm/blocks/machine/ReactorZirnox.java
@@ -9,6 +9,7 @@ import com.hbm.tileentity.TileEntityProxyCombo;
 import com.hbm.tileentity.machine.TileEntityReactorZirnox;
 
 import cpw.mods.fml.common.network.internal.FMLNetworkHandler;
+import net.minecraft.block.Block;
 import net.minecraft.block.material.Material;
 
 import net.minecraft.entity.player.EntityPlayer;
@@ -39,7 +40,7 @@ public class ReactorZirnox extends BlockDummyable {
 			return true;
 		} else if(!player.isSneaking()) {
 			BossSpawnHandler.markFBI(player);
-			
+
 			int[] pos = this.findCore(world, x, y, z);
 
 			if(pos == null)
@@ -54,7 +55,7 @@ public class ReactorZirnox extends BlockDummyable {
 
 	@Override
 	public int[] getDimensions() {
-		return new int[] {1, 0, 2, 2, 2, 2,}; 
+		return new int[] {1, 0, 2, 2, 2, 2,};
 	}
 
 	@Override
@@ -87,4 +88,43 @@ public class ReactorZirnox extends BlockDummyable {
 		this.makeExtra(world, x + dir.offsetX * o, y + 4, z + dir.offsetZ * o);
 	}
 
-}
\ No newline at end of file
+	@Override
+	public void onNeighborBlockChange(World world, int x, int y, int z, Block neighbor) {
+		super.onNeighborBlockChange(world, x, y, z, neighbor);
+		if (world.isRemote) return;
+		int[] core = this.findCore(world, x, y, z);
+		if (core == null) return;
+		int cx = core[0];
+		int cy = core[1];
+		int cz = core[2];
+		TileEntity te = world.getTileEntity(cx, cy, cz);
+		if (!(te instanceof TileEntityReactorZirnox)) return;
+		TileEntityReactorZirnox reactor = (TileEntityReactorZirnox) te;
+		boolean powered = false;
+		// 2. Scan multiblock
+		for (int dx = -2; dx <= 2 && !powered; dx++) {
+			for (int dy = 0; dy <= 4 && !powered; dy++) {
+				for (int dz = -2; dz <= 2 && !powered; dz++) {
+					// Get only surface blocks
+					if (dx == -2 || dx == 2 ||
+						dy == 0  || dy == 4 ||
+						dz == -2 || dz == 2) {
+
+						int sx = cx + dx;
+						int sy = cy + dy;
+						int sz = cz + dz;
+
+						if (world.isBlockIndirectlyGettingPowered(sx, sy, sz) ||
+							world.getBlockPowerInput(sx, sy, sz) > 0) {
+
+							powered = true;
+							break;
+						}
+					}
+				}
+			}
+		}
+		reactor.setRedstonePowered(powered);
+	}
+
+}
diff --git a/src/main/java/com/hbm/tileentity/machine/TileEntityReactorZirnox.java b/src/main/java/com/hbm/tileentity/machine/TileEntityReactorZirnox.java
index a7ec9973f..fe412b503 100644
--- a/src/main/java/com/hbm/tileentity/machine/TileEntityReactorZirnox.java
+++ b/src/main/java/com/hbm/tileentity/machine/TileEntityReactorZirnox.java
@@ -53,6 +53,7 @@ public class TileEntityReactorZirnox extends TileEntityMachineBase implements IC
 
 	public int heat;
 	public static final int maxHeat = 100000;
+	public boolean redstonePowered = false;
 	public int pressure;
 	public static final int maxPressure = 100000;
 	public boolean isOn = false;
@@ -85,6 +86,12 @@ public class TileEntityReactorZirnox extends TileEntityMachineBase implements IC
 		carbonDioxide = new FluidTank(Fluids.CARBONDIOXIDE, 16000);
 		water = new FluidTank(Fluids.WATER, 32000);
 	}
+	public void setRedstonePowered(boolean powered) {
+		if (!powered && this.redstonePowered) {
+			isOn = false;
+		}
+		this.redstonePowered = powered;
+	}
 
 	@Override
 	public String getName() {
@@ -115,6 +122,7 @@ public class TileEntityReactorZirnox extends TileEntityMachineBase implements IC
 		steam.readFromNBT(nbt, "steam");
 		carbonDioxide.readFromNBT(nbt, "carbondioxide");
 		water.readFromNBT(nbt, "water");
+		redstonePowered = nbt.getBoolean("redstonePowered");
 	}
 
 	@Override
@@ -126,6 +134,7 @@ public class TileEntityReactorZirnox extends TileEntityMachineBase implements IC
 		steam.writeToNBT(nbt, "steam");
 		carbonDioxide.writeToNBT(nbt, "carbondioxide");
 		water.writeToNBT(nbt, "water");
+		nbt.setBoolean("redstonePowered", redstonePowered);
 
 	}
 
@@ -176,7 +185,9 @@ public class TileEntityReactorZirnox extends TileEntityMachineBase implements IC
 	public void updateEntity() {
 
 		if(!worldObj.isRemote) {
-
+			if (redstonePowered) {
+				isOn = true;
+			}
 			this.output = 0;
 
 			if(worldObj.getTotalWorldTime() % 20 == 0) {
@@ -228,6 +239,7 @@ public class TileEntityReactorZirnox extends TileEntityMachineBase implements IC
 		buf.writeInt(this.heat);
 		buf.writeInt(this.pressure);
 		buf.writeBoolean(this.isOn);
+		buf.writeBoolean(this.redstonePowered);
 		steam.serialize(buf);
 		carbonDioxide.serialize(buf);
 		water.serialize(buf);
@@ -239,6 +251,7 @@ public class TileEntityReactorZirnox extends TileEntityMachineBase implements IC
 		this.heat = buf.readInt();
 		this.pressure = buf.readInt();
 		this.isOn = buf.readBoolean();
+		this.redstonePowered = buf.readBoolean();
 		steam.deserialize(buf);
 		carbonDioxide.deserialize(buf);
 		water.deserialize(buf);
@@ -429,7 +442,7 @@ public class TileEntityReactorZirnox extends TileEntityMachineBase implements IC
 
 	@Override
 	public void receiveControl(NBTTagCompound data) {
-		if(data.hasKey("control")) {
+		if(data.hasKey("control") && !redstonePowered) {
 			this.isOn = !this.isOn;
 		}