diff --git a/code/datums/cache/air_alarm.dm b/code/datums/cache/air_alarm.dm
new file mode 100644
index 00000000000..366c68afc0a
--- /dev/null
+++ b/code/datums/cache/air_alarm.dm
@@ -0,0 +1,22 @@
+var/global/datum/repository/air_alarm/air_alarm_repository = new()
+
+/datum/repository/air_alarm/proc/air_alarm_data(var/list/monitored_alarms)
+	var/alarms[0]
+	
+	var/datum/cache_entry/cache_entry = cache_data
+	if(!cache_entry)
+		cache_entry = new/datum/cache_entry
+		cache_data = cache_entry
+
+	if(world.time < cache_entry.timestamp)
+		return cache_entry.data
+
+	for(var/obj/machinery/alarm/alarm in sortAtom((monitored_alarms.len ? monitored_alarms : machines)))
+		if(!monitored_alarms.len && alarm.z != ZLEVEL_STATION && alarm.z != ZLEVEL_ASTEROID)
+			continue
+		alarms[++alarms.len] = alarm.get_nano_data_console()
+		
+	cache_entry.timestamp = world.time + 10 SECONDS
+	cache_entry.data = alarms		
+	return alarms
+
diff --git a/code/datums/cache/apc.dm b/code/datums/cache/apc.dm
new file mode 100644
index 00000000000..e6dc996827b
--- /dev/null
+++ b/code/datums/cache/apc.dm
@@ -0,0 +1,28 @@
+var/global/datum/repository/apc/apc_repository = new()
+
+/datum/repository/apc/proc/apc_data(var/obj/machinery/computer/monitor/powermonitor)
+	var/apcData[0]
+	
+	var/datum/cache_entry/cache_entry = cache_data
+	if(!cache_entry)
+		cache_entry = new/datum/cache_entry
+		cache_data = cache_entry
+
+	if(world.time < cache_entry.timestamp)
+		return cache_entry.data
+	
+	if (powermonitor && !isnull(powermonitor.powernet))
+		var/list/L = list()
+		for(var/obj/machinery/power/terminal/term in powermonitor.powernet.nodes)
+			if(istype(term.master, /obj/machinery/power/apc))
+				var/obj/machinery/power/apc/A = term.master
+				L += A
+
+		var/list/Status = list(0,0,1,1) // Status:  off, auto-off, on, auto-on
+		var/list/chg = list(0,1,1)	// Charging: no, charging, full
+		for(var/obj/machinery/power/apc/A in L)
+			apcData[++apcData.len] = list("Name" = html_encode(A.area.name), "Equipment" = Status[A.equipment+1], "Lights" = Status[A.lighting+1], "Environment" = Status[A.environ+1], "CellPct" = A.cell ? round(A.cell.percent(),1) : -1, "CellStatus" = A.cell ? chg[A.charging+1] : 0)
+
+	cache_entry.timestamp = world.time + 5 SECONDS
+	cache_entry.data = apcData		
+	return apcData
\ No newline at end of file
diff --git a/code/datums/cache/cache.dm b/code/datums/cache/cache.dm
new file mode 100644
index 00000000000..2502bb871b2
--- /dev/null
+++ b/code/datums/cache/cache.dm
@@ -0,0 +1,6 @@
+/datum/cache_entry
+	var/timestamp
+	var/data
+	
+/datum/repository
+	var/cache_data
\ No newline at end of file
diff --git a/code/datums/crew.dm b/code/datums/cache/crew.dm
similarity index 96%
rename from code/datums/crew.dm
rename to code/datums/cache/crew.dm
index d398ef5d4e4..0afb70a4404 100644
--- a/code/datums/crew.dm
+++ b/code/datums/cache/crew.dm
@@ -1,12 +1,5 @@
 var/global/datum/repository/crew/crew_repository = new()
 
-/datum/cache_entry
-	var/timestamp
-	var/data
-
-/datum/repository/crew
-	var/list/cache_data
-
 /datum/repository/crew/New()
 	cache_data = list()
 	..()
diff --git a/code/datums/cache/powermonitor.dm b/code/datums/cache/powermonitor.dm
new file mode 100644
index 00000000000..6ba79d2f78e
--- /dev/null
+++ b/code/datums/cache/powermonitor.dm
@@ -0,0 +1,24 @@
+var/global/datum/repository/powermonitor/powermonitor_repository = new()
+
+/datum/repository/powermonitor/proc/powermonitor_data(var/refresh = 0)
+	var/pMonData[0]
+	
+	var/datum/cache_entry/cache_entry = cache_data
+	if(!cache_entry)
+		cache_entry = new/datum/cache_entry
+		cache_data = cache_entry
+
+	if(!refresh)
+		return cache_entry.data
+		
+	for(var/obj/machinery/computer/monitor/pMon in world)
+		if( !(pMon.stat & (NOPOWER|BROKEN)) )
+			pMonData[++pMonData.len] = list ("Name" = pMon.name, "ref" = "\ref[pMon]")
+
+	cache_entry.timestamp = world.time //+ 30 SECONDS
+	cache_entry.data = pMonData				
+	return pMonData
+	
+/datum/repository/powermonitor/proc/update_cache()
+	return powermonitor_data(1)
+	
\ No newline at end of file
diff --git a/code/game/machinery/computer/power.dm b/code/game/machinery/computer/power.dm
index b37437e7c22..138f6b324b9 100644
--- a/code/game/machinery/computer/power.dm
+++ b/code/game/machinery/computer/power.dm
@@ -14,9 +14,13 @@
 /obj/machinery/computer/monitor/New()
 	power_monitor = new(src)	
 	powernet = find_powernet()
-		
+	powermonitor_repository.update_cache()	
 	..()
 	
+/obj/machinery/computer/monitor/Destroy()
+	powermonitor_repository.update_cache()	
+	return ..()	
+	
 /obj/machinery/computer/monitor/process() 
 	if(!powernet)
 		powernet = find_powernet()
diff --git a/code/modules/nano/modules/atmos_control.dm b/code/modules/nano/modules/atmos_control.dm
index 1c5f3c9a932..5a12c4db8a3 100644
--- a/code/modules/nano/modules/atmos_control.dm
+++ b/code/modules/nano/modules/atmos_control.dm
@@ -31,14 +31,7 @@
 
 /datum/nano_module/atmos_control/ui_interact(mob/user, ui_key = "main", var/datum/nanoui/ui = null, var/force_open = 1, var/master_ui = null, var/datum/topic_state/state = default_state)
 	var/data[0]
-	var/alarms[0]
-
-	// TODO: Move these to a cache, similar to cameras
-	for(var/obj/machinery/alarm/alarm in sortAtom((monitored_alarms.len ? monitored_alarms : machines)))
-		if(!monitored_alarms.len && alarm.z != ZLEVEL_STATION && alarm.z != ZLEVEL_ASTEROID)
-			continue
-		alarms[++alarms.len] = alarm.get_nano_data_console()
-	data["alarms"] = alarms
+	data["alarms"] = air_alarm_repository.air_alarm_data(monitored_alarms)
 
 	ui = nanomanager.try_update_ui(user, src, ui_key, ui, data, force_open)
 	if(!ui)
diff --git a/code/modules/nano/modules/power_monitor.dm b/code/modules/nano/modules/power_monitor.dm
index af5f12fbba8..9171ea747ce 100644
--- a/code/modules/nano/modules/power_monitor.dm
+++ b/code/modules/nano/modules/power_monitor.dm
@@ -13,34 +13,17 @@
 	
 /datum/nano_module/power_monitor/ui_interact(mob/user, ui_key = "main", var/datum/nanoui/ui = null, var/force_open = 1, var/datum/topic_state/state = default_state)
 	var/data[0]
-	var/pMonData[0]
-	var/apcData[0]
 		
 	data["powermonitor"] = powermonitor
 	if(select_monitor)
 		data["select_monitor"] = 1
-		for(var/obj/machinery/computer/monitor/pMon in world)
-			if( !(pMon.stat & (NOPOWER|BROKEN)) )
-				pMonData[++pMonData.len] = list ("Name" = pMon.name, "ref" = "\ref[pMon]")
+		data["powermonitors"] = powermonitor_repository.powermonitor_data()
 		
-		data["powermonitors"] = pMonData
-
-	if (powermonitor && !isnull(powermonitor.powernet))
+	if (powermonitor && !isnull(powermonitor.powernet))	
 		data["poweravail"] = powermonitor.powernet.avail
-		data["powerload"] = num2text(powermonitor.powernet.viewload,10)
-		var/list/L = list()
-		for(var/obj/machinery/power/terminal/term in powermonitor.powernet.nodes)
-			if(istype(term.master, /obj/machinery/power/apc))
-				var/obj/machinery/power/apc/A = term.master
-				L += A
-
-		var/list/Status = list(0,0,1,1) // Status:  off, auto-off, on, auto-on
-		var/list/chg = list(0,1,1)	// Charging: nope, charging, full
-		for(var/obj/machinery/power/apc/A in L)
-			apcData[++apcData.len] = list("Name" = html_encode(A.area.name), "Equipment" = Status[A.equipment+1], "Lights" = Status[A.lighting+1], "Environment" = Status[A.environ+1], "CellPct" = A.cell ? round(A.cell.percent(),1) : -1, "CellStatus" = A.cell ? chg[A.charging+1] : 0)
-
-		data["apcs"] = apcData
-
+		data["powerload"] = num2text(powermonitor.powernet.viewload,10)	
+		data["apcs"] = apc_repository.apc_data(powermonitor)
+	
 	ui = nanomanager.try_update_ui(user, src, ui_key, ui, data, force_open)
 	if (!ui)
 		ui = new(user, src, ui_key, "power_monitor.tmpl", "Power Monitoring Console", 800, 700, state = state)
diff --git a/paradise.dme b/paradise.dme
index 24288a7e640..83d16e64888 100644
--- a/paradise.dme
+++ b/paradise.dme
@@ -174,7 +174,6 @@
 #include "code\datums\browser.dm"
 #include "code\datums\cargoprofile.dm"
 #include "code\datums\computerfiles.dm"
-#include "code\datums\crew.dm"
 #include "code\datums\datacore.dm"
 #include "code\datums\datumvars.dm"
 #include "code\datums\gas_mixture.dm"
@@ -188,6 +187,11 @@
 #include "code\datums\spell.dm"
 #include "code\datums\supplypacks.dm"
 #include "code\datums\uplink_item.dm"
+#include "code\datums\cache\air_alarm.dm"
+#include "code\datums\cache\apc.dm"
+#include "code\datums\cache\cache.dm"
+#include "code\datums\cache\crew.dm"
+#include "code\datums\cache\powermonitor.dm"
 #include "code\datums\helper_datums\construction_datum.dm"
 #include "code\datums\helper_datums\events.dm"
 #include "code\datums\helper_datums\global_iterator.dm"