1 files changed, 7 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/interfaces/fluid/IFluidStore.java b/src/main/java/gregtech/api/interfaces/fluid/IFluidStore.java
index 047cf4df5b..5b5bb08c87 100644
--- a/src/main/java/gregtech/api/interfaces/fluid/IFluidStore.java
+++ b/src/main/java/gregtech/api/interfaces/fluid/IFluidStore.java
@@ -19,4 +19,11 @@ public interface IFluidStore extends IFluidTank {
      * @return Whether to allow given fluid to be inserted into this.
      */
     boolean canStoreFluid(@Nonnull FluidStack fluidStack);
+
+    /**
+     * @return The amount of fluid that can be stored in this.
+     */
+    default int getAvailableSpace() {
+        return getCapacity() - getFluidAmount();
+    }
 }