diff --git a/src/main/scala/li/cil/oc/common/tileentity/traits/power/BuildCraft.scala b/src/main/scala/li/cil/oc/common/tileentity/traits/power/BuildCraft.scala
index 3cad4a45d..fec4d973f 100644
--- a/src/main/scala/li/cil/oc/common/tileentity/traits/power/BuildCraft.scala
+++ b/src/main/scala/li/cil/oc/common/tileentity/traits/power/BuildCraft.scala
@@ -1,7 +1,7 @@
 package li.cil.oc.common.tileentity.traits.power
 
 import buildcraft.api.power.{PowerHandler, IPowerReceptor}
-import cpw.mods.fml.common.Optional
+import cpw.mods.fml.common.{ModAPIManager, Optional}
 import li.cil.oc.Settings
 import net.minecraftforge.common.util.ForgeDirection
 
@@ -9,12 +9,13 @@ import net.minecraftforge.common.util.ForgeDirection
 trait BuildCraft extends Common with IPowerReceptor {
   private var powerHandler: Option[AnyRef] = None
 
+  private lazy val useBuildCraftPower = isServer && !Settings.get.ignorePower && ModAPIManager.INSTANCE.hasAPI("BuildCraftAPI|power")
+
   // ----------------------------------------------------------------------- //
 
-  @Optional.Method(modid = "BuildCraftAPI|power")
   override def updateEntity() {
     super.updateEntity()
-    if (isServer && !Settings.get.ignorePower && world.getWorldTime % Settings.get.tickFrequency == 0) {
+    if (useBuildCraftPower && world.getWorldTime % Settings.get.tickFrequency == 0) {
       for (side <- ForgeDirection.VALID_DIRECTIONS) {
         val demand = globalBufferSize(side) - globalBuffer(side)
         if (demand > 1) {
diff --git a/src/main/scala/li/cil/oc/common/tileentity/traits/power/IndustrialCraft2.scala b/src/main/scala/li/cil/oc/common/tileentity/traits/power/IndustrialCraft2.scala
index ac03f10dd..2a093ccfc 100644
--- a/src/main/scala/li/cil/oc/common/tileentity/traits/power/IndustrialCraft2.scala
+++ b/src/main/scala/li/cil/oc/common/tileentity/traits/power/IndustrialCraft2.scala
@@ -1,6 +1,6 @@
 package li.cil.oc.common.tileentity.traits.power
 
-import cpw.mods.fml.common.Optional
+import cpw.mods.fml.common.{Loader, Optional}
 import ic2.api.energy.tile.IEnergySink
 import li.cil.oc.common.EventHandler
 import li.cil.oc.Settings
@@ -10,24 +10,23 @@ import net.minecraftforge.common.util.ForgeDirection
 trait IndustrialCraft2 extends Common with IEnergySink {
   var addedToPowerGrid = false
 
+  private val useIndustrialCraft2Power = isServer && !Settings.get.ignorePower && Loader.isModLoaded("IC2")
+
   // ----------------------------------------------------------------------- //
 
-  @Optional.Method(modid = "IC2")
   override def validate() {
     super.validate()
-    if (!addedToPowerGrid) EventHandler.scheduleIC2Add(this)
+    if (useIndustrialCraft2Power && !addedToPowerGrid) EventHandler.scheduleIC2Add(this)
   }
 
-  @Optional.Method(modid = "IC2")
   override def invalidate() {
     super.invalidate()
-    if (addedToPowerGrid) EventHandler.scheduleIC2Remove(this)
+    if (useIndustrialCraft2Power && addedToPowerGrid) EventHandler.scheduleIC2Remove(this)
   }
 
-  @Optional.Method(modid = "IC2")
   override def onChunkUnload() {
     super.onChunkUnload()
-    if (addedToPowerGrid) EventHandler.scheduleIC2Remove(this)
+    if (useIndustrialCraft2Power && addedToPowerGrid) EventHandler.scheduleIC2Remove(this)
   }
 
   // ----------------------------------------------------------------------- //