diff --git a/src/main/java/gregtech/api/GTValues.java b/src/main/java/gregtech/api/GTValues.java
index 0c029c7927c..523360d53e8 100644
--- a/src/main/java/gregtech/api/GTValues.java
+++ b/src/main/java/gregtech/api/GTValues.java
@@ -201,4 +201,7 @@ public static boolean isDeobfEnvironment() {
         return ConfigHolder.misc.specialEvents && yearMonthDay[1].equals("12") &&
                 (yearMonthDay[2].equals("24") || yearMonthDay[2].equals("25"));
     };
+
+    // todo temp
+    public static double LOG_4 = Math.log(4);
 }
diff --git a/src/main/java/gregtech/api/capability/impl/HeatingCoilRecipeLogic.java b/src/main/java/gregtech/api/capability/impl/HeatingCoilRecipeLogic.java
index fc9bd216d55..31ddb9f9275 100644
--- a/src/main/java/gregtech/api/capability/impl/HeatingCoilRecipeLogic.java
+++ b/src/main/java/gregtech/api/capability/impl/HeatingCoilRecipeLogic.java
@@ -18,8 +18,8 @@
  */
 public class HeatingCoilRecipeLogic extends MultiblockRecipeLogic {
 
-    public HeatingCoilRecipeLogic(RecipeMapMultiblockController metaTileEntity) {
-        super(metaTileEntity);
+    public HeatingCoilRecipeLogic(RecipeMapMultiblockController metaTileEntity, int tierskipLimit_) {
+        super(metaTileEntity, tierskipLimit_);
         if (!(metaTileEntity instanceof IHeatingCoil)) {
             throw new IllegalArgumentException("MetaTileEntity must be instanceof IHeatingCoil");
         }
diff --git a/src/main/java/gregtech/api/capability/impl/MultiblockRecipeLogic.java b/src/main/java/gregtech/api/capability/impl/MultiblockRecipeLogic.java
index 5ec88c42708..1fae8667fef 100644
--- a/src/main/java/gregtech/api/capability/impl/MultiblockRecipeLogic.java
+++ b/src/main/java/gregtech/api/capability/impl/MultiblockRecipeLogic.java
@@ -37,12 +37,26 @@ public class MultiblockRecipeLogic extends AbstractRecipeLogic {
     protected IItemHandlerModifiable currentDistinctInputBus;
     protected List<IItemHandlerModifiable> invalidatedInputList = new ArrayList<>();
 
+    protected int tierskipLimit;
+
     public MultiblockRecipeLogic(RecipeMapMultiblockController tileEntity) {
         super(tileEntity, tileEntity.recipeMap);
+        this.tierskipLimit = 0;
+    }
+
+    public MultiblockRecipeLogic(RecipeMapMultiblockController tileEntity, int tierskipLimit_) {
+        super(tileEntity, tileEntity.recipeMap);
+        this.tierskipLimit = tierskipLimit_;
     }
 
     public MultiblockRecipeLogic(RecipeMapMultiblockController tileEntity, boolean hasPerfectOC) {
         super(tileEntity, tileEntity.recipeMap, hasPerfectOC);
+        this.tierskipLimit = 0;
+    }
+
+    public MultiblockRecipeLogic(RecipeMapMultiblockController tileEntity, int tierskipLimit_, boolean hasPerfectOC) {
+        super(tileEntity, tileEntity.recipeMap, hasPerfectOC);
+        this.tierskipLimit = tierskipLimit_;
     }
 
     @Override
@@ -103,7 +117,7 @@ protected IMultipleTankHandler getInputTank() {
     /**
      * Overload of {@link #getInputTank()} to gather extra fluid tanks
      * that could exist in a distinct item handler (such as a {@link DualHandler})
-     * 
+     *
      * @param items Handler to gather fluid tanks from
      * @return a new FluidTankList with extra fluid tanks on top of the existing fluid tanks
      */
@@ -400,13 +414,14 @@ public long getMaxVoltage() {
             // Machine Multiblocks
             if (energyContainer instanceof EnergyContainerList energyList) {
                 long highestVoltage = energyList.getHighestInputVoltage();
-                if (energyList.getNumHighestInputContainers() > 1) {
-                    // allow tier + 1 if there are multiple hatches present at the highest tier
-                    int tier = GTUtility.getTierByVoltage(highestVoltage);
-                    return GTValues.V[Math.min(tier + 1, GTValues.MAX)];
-                } else {
-                    return highestVoltage;
-                }
+                int tier = GTUtility.getTierByVoltage(highestVoltage);
+
+                // todo fix (always returns 1)
+                long amps = energyList.getInputAmperage();
+
+                // todo log call can be replaced with something less intensive
+                int tierskip = (int) Math.min((Math.log(amps) / GTValues.LOG_4), tierskipLimit);
+                return GTValues.V[Math.min(tier + tierskip, GTValues.MAX)];
             } else {
                 return energyContainer.getInputVoltage();
             }
diff --git a/src/main/java/gregtech/api/metatileentity/multiblock/RecipeMapMultiblockController.java b/src/main/java/gregtech/api/metatileentity/multiblock/RecipeMapMultiblockController.java
index 02ba5655857..8fe99dd3f03 100644
--- a/src/main/java/gregtech/api/metatileentity/multiblock/RecipeMapMultiblockController.java
+++ b/src/main/java/gregtech/api/metatileentity/multiblock/RecipeMapMultiblockController.java
@@ -203,8 +203,7 @@ public TraceabilityPredicate autoAbilities(boolean checkEnergyIn,
 
         if (checkEnergyIn) {
             predicate = predicate.or(abilities(MultiblockAbility.INPUT_ENERGY).setMinGlobalLimited(1)
-                    .setMaxGlobalLimited(2)
-                    .setPreviewCount(1));
+                    .setMaxGlobalLimited(1).setPreviewCount(1));
         }
 
         if (checkItemIn) {
diff --git a/src/main/java/gregtech/common/metatileentities/MetaTileEntityRegistration.java b/src/main/java/gregtech/common/metatileentities/MetaTileEntityRegistration.java
index 55cd52e5cd4..8591887232a 100644
--- a/src/main/java/gregtech/common/metatileentities/MetaTileEntityRegistration.java
+++ b/src/main/java/gregtech/common/metatileentities/MetaTileEntityRegistration.java
@@ -917,9 +917,9 @@ private static void multiblockParts() {
         for (int i = 0; i < endPos; i++) {
             String voltageName = GTValues.VN[i].toLowerCase();
             MetaTileEntities.ENERGY_INPUT_HATCH[i] = MetaTileEntities.registerMetaTileEntity(11120 + i,
-                    new MetaTileEntityEnergyHatch(gregtechId("energy_hatch.input." + voltageName), i, 2, false));
+                    new MetaTileEntityEnergyHatch(gregtechId("energy_hatch.input." + voltageName), i, 1, false));
             MetaTileEntities.ENERGY_OUTPUT_HATCH[i] = MetaTileEntities.registerMetaTileEntity(11135 + i,
-                    new MetaTileEntityEnergyHatch(gregtechId("energy_hatch.output." + voltageName), i, 2, true));
+                    new MetaTileEntityEnergyHatch(gregtechId("energy_hatch.output." + voltageName), i, 1, true));
 
             MetaTileEntities.ENERGY_INPUT_HATCH_4A[i] = MetaTileEntities.registerMetaTileEntity(11150 + i,
                     new MetaTileEntityEnergyHatch(gregtechId("energy_hatch.input_4a." + voltageName), i, 4, false));
diff --git a/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityAssemblyLine.java b/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityAssemblyLine.java
index 69b648b41cb..4f8a908dcb7 100644
--- a/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityAssemblyLine.java
+++ b/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityAssemblyLine.java
@@ -92,7 +92,7 @@ protected BlockPattern createStructurePattern() {
                 .where('Y', states(getCasingState())
                         .or(abilities(MultiblockAbility.INPUT_ENERGY)
                                 .setMinGlobalLimited(1)
-                                .setMaxGlobalLimited(3)))
+                                .setMaxGlobalLimited(1)))
                 .where('I', metaTileEntities(MetaTileEntities.ITEM_IMPORT_BUS[GTValues.ULV]))
                 .where('G', states(getGrateState()))
                 .where('A',
diff --git a/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityElectricBlastFurnace.java b/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityElectricBlastFurnace.java
index 89c277d7c8d..4e7a9eb3aa4 100644
--- a/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityElectricBlastFurnace.java
+++ b/src/main/java/gregtech/common/metatileentities/multi/electric/MetaTileEntityElectricBlastFurnace.java
@@ -60,7 +60,7 @@ public class MetaTileEntityElectricBlastFurnace extends RecipeMapMultiblockContr
 
     public MetaTileEntityElectricBlastFurnace(ResourceLocation metaTileEntityId) {
         super(metaTileEntityId, RecipeMaps.BLAST_RECIPES);
-        this.recipeMapWorkable = new HeatingCoilRecipeLogic(this);
+        this.recipeMapWorkable = new HeatingCoilRecipeLogic(this, 1);
     }
 
     @Override