diff --git a/upgrades.lua b/upgrades.lua
index 09776c1..a401f9b 100644
--- a/upgrades.lua
+++ b/upgrades.lua
@@ -19,8 +19,31 @@ local S=minetest.get_translator("industrialtest")
 industrialtest.internal.applyUpgrade=function(meta,stack)
 	local def=minetest.registered_items[stack:get_name()]
 	if def.groups._industrialtest_upgradeSpeed then
-		local speed=meta:contains("industrialtest.speed") and meta:get_int("industrialtest.speed") or 1
+		local speed=industrialtest.api.getMachineSpeed(meta)
 		meta:set_int("industrialtest.speed",math.min(4,speed+def.groups._industrialtest_upgradeSpeed))
+	elseif def.groups._industrialtest_upgradeTransformer then
+		local flows={
+			industrialtest.api.lvPowerFlow,
+			industrialtest.api.mvPowerFlow,
+			industrialtest.api.hvPowerFlow,
+			industrialtest.api.evPowerFlow,
+			industrialtest.api.ivPowerFlow
+		}
+		local machineFlow=meta:get_int("industrialtest.powerFlow")
+		local upgradedFlow=machineFlow
+		for _,flow in ipairs(flows) do
+			if flow>machineFlow then
+				upgradedFlow=flow
+				break
+			end
+		end
+		meta:set_int("industrialtest.powerFlow",upgradedFlow)
+		local networks=industrialtest.api.isAttachedToNetwork(meta)
+		if networks then
+			for _,network in ipairs(networks) do
+				industrialtest.api.createNetworkMapForNode(network)
+			end
+		end
 	end
 end
 
@@ -29,6 +52,30 @@ industrialtest.internal.removeUpgrade=function(meta,stack)
 	if def.groups._industrialtest_upgradeSpeed and meta:contains("industrialtest.speed") then
 		local speed=meta:get_int("industrialtest.speed")
 		meta:set_int("industrialtest.speed",math.max(1,speed-def.groups._industrialtest_upgradeSpeed))
+	elseif def.groups._industrialtest_upgradeTransformer then
+		local flows={
+			industrialtest.api.lvPowerFlow,
+			industrialtest.api.mvPowerFlow,
+			industrialtest.api.hvPowerFlow,
+			industrialtest.api.evPowerFlow,
+			industrialtest.api.ivPowerFlow
+		}
+		local machineFlow=meta:get_int("industrialtest.powerFlow")
+		local downgradedFlow=machineFlow
+		for i=#flows,1,-1 do
+			local flow=flows[i]
+			if flow<machineFlow then
+				downgradedFlow=flow
+				break
+			end
+		end
+		meta:set_int("industrialtest.powerFlow",downgradedFlow)
+		local networks=industrialtest.api.isAttachedToNetwork(meta)
+		if networks then
+			for _,network in ipairs(networks) do
+				industrialtest.api.createNetworkMapForNode(network)
+			end
+		end
 	end
 end
 
@@ -38,7 +85,8 @@ local function registerMachineUpgrade(config)
 		inventory_image="industrialtest_"..config.name..".png",
 		groups={
 			_industrialtest_machineUpgrade=1,
-			_industrialtest_upgradeSpeed=config.speed or 0
+			_industrialtest_upgradeSpeed=config.speed or nil,
+			_industrialtest_upgradeTransformer=config.transformer or nil,
 		}
 	})
 end
@@ -48,3 +96,26 @@ registerMachineUpgrade({
 	displayName=S("Overclocker Upgrade"),
 	speed=1
 })
+minetest.register_craft({
+	type="shaped",
+	output="industrialtest:overclocker_upgrade",
+	recipe={
+		{"industrialtest:coolant_cell","industrialtest:coolant_cell","industrialtest:coolant_cell"},
+		{"industrialtest:insulated_copper_cable","industrialtest:electronic_circuit","industrialtest:insulated_copper_cable"}
+	}
+})
+
+registerMachineUpgrade({
+	name="transformer_upgrade",
+	displayName=S("Transformer Upgrade"),
+	transformer=1
+})
+minetest.register_craft({
+	type="shaped",
+	output="industrialtest:transformer_upgrade",
+	recipe={
+		{industrialtest.elementKeys.glass,industrialtest.elementKeys.glass,industrialtest.elementKeys.glass},
+		{"industrialtest:insulated_gold_cable","industrialtest:mv_transformer","industrialtest:insulated_gold_cable"},
+		{industrialtest.elementKeys.glass,"industrialtest:electronic_circuit",industrialtest.elementKeys.glass}
+	}
+})