diff --git a/src/main/java/api/hbm/energy/IEnergyConnector.java b/src/main/java/api/hbm/energy/IEnergyConnector.java
index a935a42c2..a560a6737 100644
--- a/src/main/java/api/hbm/energy/IEnergyConnector.java
+++ b/src/main/java/api/hbm/energy/IEnergyConnector.java
@@ -107,4 +107,14 @@ public interface IEnergyConnector extends ILoadedTile {
 		Vec3 vec = Vec3.createVectorHelper(te.xCoord + 0.5, te.yCoord + 1, te.zCoord + 0.5);
 		return vec;
 	}
+	
+	public default ConnectionPriority getPriority() {
+		return ConnectionPriority.NORMAL;
+	}
+	
+	public enum ConnectionPriority {
+		LOW,
+		NORMAL,
+		HIGH
+	}
 }
diff --git a/src/main/java/api/hbm/energy/PowerNet.java b/src/main/java/api/hbm/energy/PowerNet.java
index da1edbdf6..be5194fb9 100644
--- a/src/main/java/api/hbm/energy/PowerNet.java
+++ b/src/main/java/api/hbm/energy/PowerNet.java
@@ -6,6 +6,7 @@ import java.util.List;
 
 import com.hbm.config.GeneralConfig;
 
+import api.hbm.energy.IEnergyConnector.ConnectionPriority;
 import net.minecraft.tileentity.TileEntity;
 
 /**
@@ -135,33 +136,48 @@ public class PowerNet implements IPowerNet {
 		if(this.subscribers.isEmpty())
 			return power;
 		
-		List<IEnergyConnector> subList = new ArrayList(subscribers);
+		ConnectionPriority[] priorities = new ConnectionPriority[] {ConnectionPriority.HIGH, ConnectionPriority.NORMAL, ConnectionPriority.LOW};
 		
-		List<Long> weight = new ArrayList();
-		long totalReq = 0;
-		
-		for(IEnergyConnector con : subList) {
-			long req = con.getTransferWeight();
-			weight.add(req);
-			totalReq += req;
+		for(ConnectionPriority p : priorities) {
+			
+			List<IEnergyConnector> subList = new ArrayList();
+			subscribers.forEach(x -> {
+				if(x.getPriority() == p) {
+					subList.add(x);
+				}
+			});
+			
+			if(subList.isEmpty())
+				continue;
+			
+			List<Long> weight = new ArrayList();
+			long totalReq = 0;
+			
+			for(IEnergyConnector con : subList) {
+				long req = con.getTransferWeight();
+				weight.add(req);
+				totalReq += req;
+			}
+			
+			if(totalReq == 0)
+				continue;
+			
+			long totalGiven = 0;
+			
+			for(int i = 0; i < subList.size(); i++) {
+				IEnergyConnector con = subList.get(i);
+				long req = weight.get(i);
+				double fraction = (double)req / (double)totalReq;
+				
+				long given = (long) Math.floor(fraction * power);
+				
+				totalGiven += (given - con.transferPower(given));
+			}
+			
+			power -= totalGiven;
 		}
 		
-		if(totalReq == 0)
-			return power;
-		
-		long totalGiven = 0;
-		
-		for(int i = 0; i < subList.size(); i++) {
-			IEnergyConnector con = subList.get(i);
-			long req = weight.get(i);
-			double fraction = (double)req / (double)totalReq;
-			
-			long given = (long) Math.floor(fraction * power);
-			
-			totalGiven += (given - con.transferPower(given));
-		}
-		
-		return power - totalGiven;
+		return power;
 	}
 
 	@Override
diff --git a/src/main/java/com/hbm/inventory/recipes/AssemblerRecipes.java b/src/main/java/com/hbm/inventory/recipes/AssemblerRecipes.java
index 15f788d35..4674a414f 100644
--- a/src/main/java/com/hbm/inventory/recipes/AssemblerRecipes.java
+++ b/src/main/java/com/hbm/inventory/recipes/AssemblerRecipes.java
@@ -120,7 +120,7 @@ public class AssemblerRecipes {
 			ComparableStack compStack = ItemAssemblyTemplate.readType(stack);
 			if(compStack != null) {
 				AStack[] ret = recipes.get(compStack);
-				return Arrays.asList(ret);
+				return ret == null ? null : Arrays.asList(ret);
 			}
 			
 			//LEGACY
@@ -131,7 +131,7 @@ public class AssemblerRecipes {
 				if(out != null) {
 					ComparableStack comp = new ComparableStack(out);
 					AStack[] ret = recipes.get(comp);
-					return Arrays.asList(ret);
+					return ret == null ? null : Arrays.asList(ret);
 				}
 			}
 		}
diff --git a/src/main/java/com/hbm/tileentity/machine/storage/TileEntityMachineBattery.java b/src/main/java/com/hbm/tileentity/machine/storage/TileEntityMachineBattery.java
index 156a96374..f15a75ae1 100644
--- a/src/main/java/com/hbm/tileentity/machine/storage/TileEntityMachineBattery.java
+++ b/src/main/java/com/hbm/tileentity/machine/storage/TileEntityMachineBattery.java
@@ -8,6 +8,7 @@ import api.hbm.energy.IBatteryItem;
 import api.hbm.energy.IEnergyConductor;
 import api.hbm.energy.IEnergyConnector;
 import api.hbm.energy.IEnergyUser;
+import api.hbm.energy.IEnergyConnector.ConnectionPriority;
 import net.minecraft.item.ItemStack;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.tileentity.TileEntity;
@@ -302,6 +303,11 @@ public class TileEntityMachineBattery extends TileEntityMachineBase implements I
 	public void setPower(long power) {
 		this.power = power;
 	}
+
+	@Override
+	public ConnectionPriority getPriority() {
+		return ConnectionPriority.LOW;
+	}
 	
 	// do some opencomputer stuff
 	@Override
diff --git a/src/main/java/com/hbm/tileentity/machine/storage/TileEntityMachineFENSU.java b/src/main/java/com/hbm/tileentity/machine/storage/TileEntityMachineFENSU.java
index fed8cadac..a9a501152 100644
--- a/src/main/java/com/hbm/tileentity/machine/storage/TileEntityMachineFENSU.java
+++ b/src/main/java/com/hbm/tileentity/machine/storage/TileEntityMachineFENSU.java
@@ -16,6 +16,8 @@ public class TileEntityMachineFENSU extends TileEntityMachineBattery {
 	public float prevRotation = 0F;
 	public float rotation = 0F;
 	
+	public static final long maxTransfer = 10_000_000_000_000_000L;
+	
 	@Override
 	public void updateEntity() {
 		
@@ -68,7 +70,7 @@ public class TileEntityMachineFENSU extends TileEntityMachineBattery {
 			if(te instanceof IEnergyConnector) {
 				IEnergyConnector con = (IEnergyConnector) te;
 				
-				long max = 10_000_000_000_000_000L;
+				long max = maxTransfer;
 				long toTransfer = Math.min(max, this.power);
 				long remainder = this.power - toTransfer;
 				this.power = toTransfer;
@@ -108,6 +110,11 @@ public class TileEntityMachineFENSU extends TileEntityMachineBattery {
 	public long getMaxPower() {
 		return Long.MAX_VALUE;
 	}
+
+	@Override
+	public long getTransferWeight() {
+		return Math.min(Math.max(this.getMaxPower() - getPower(), 0), maxTransfer);
+	}
 	
 	public float getSpeed() {
 		return (float) Math.pow(Math.log(power * 0.75 + 1) * 0.05F, 5);
@@ -127,7 +134,7 @@ public class TileEntityMachineFENSU extends TileEntityMachineBattery {
 	
 	// override the name because when connecting the machine to opencomputers it's gonna say "ntm_energy_storage"
 	@Override
-    	public String getComponentName() {
-        	return "ntm_fensu";
+	public String getComponentName() {
+		return "ntm_fensu";
 	}
 }