diff --git a/code/modules/power/apc.dm b/code/modules/power/apc.dm
index 8dd30101f2f..2e153f71a3d 100644
--- a/code/modules/power/apc.dm
+++ b/code/modules/power/apc.dm
@@ -57,7 +57,7 @@
 	damage_deflection = 10
 	resistance_flags = FIRE_PROOF
 	interaction_flags_machine = INTERACT_MACHINE_WIRES_IF_OPEN | INTERACT_MACHINE_ALLOW_SILICON | INTERACT_MACHINE_OPEN_SILICON
-	ui_x = 450 
+	ui_x = 450
 	ui_y = 460
 
 	var/lon_range = 1.5
@@ -1120,9 +1120,9 @@
 	if(terminal && terminal.powernet)
 		terminal.add_load(amount)
 
-/obj/machinery/power/apc/avail()
+/obj/machinery/power/apc/avail(amount)
 	if(terminal)
-		return terminal.avail()
+		return terminal.avail(amount)
 	else
 		return 0
 
diff --git a/code/modules/power/cable.dm b/code/modules/power/cable.dm
index dfd7cab4ca3..427540a47eb 100644
--- a/code/modules/power/cable.dm
+++ b/code/modules/power/cable.dm
@@ -210,9 +210,9 @@ GLOBAL_LIST_INIT(wire_node_generating_types, typecacheof(list(/obj/structure/gri
 	else
 		return 0
 
-/obj/structure/cable/proc/avail()
+/obj/structure/cable/proc/avail(amount)
 	if(powernet)
-		return powernet.avail
+		return amount ? powernet.avail >= amount : powernet.avail
 	else
 		return 0
 
diff --git a/code/modules/power/power.dm b/code/modules/power/power.dm
index e1788d522b0..ef65cb702f3 100644
--- a/code/modules/power/power.dm
+++ b/code/modules/power/power.dm
@@ -51,9 +51,9 @@
 	else
 		return 0
 
-/obj/machinery/power/proc/avail()
+/obj/machinery/power/proc/avail(amount)
 	if(powernet)
-		return powernet.avail
+		return amount ? powernet.avail >= amount : powernet.avail
 	else
 		return 0
 
@@ -235,7 +235,7 @@
 		index++
 
 		var/list/connections = working_cable.get_cable_connections(skip_assigned_powernets)
-		
+
 		for(var/obj/structure/cable/cable_entry in connections)
 			if(!cables[cable_entry]) //Since it's an associated list, we can just do an access and check it's null before adding; prevents duplicate entries
 				cables[cable_entry] = TRUE