diff --git a/basic_machines/source.lua b/basic_machines/source.lua
index 48164b2..5056980 100644
--- a/basic_machines/source.lua
+++ b/basic_machines/source.lua
@@ -35,7 +35,7 @@ local function formspec(self, pos, nvm)
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
-		power.formspec_label_bar(0, 0.8, S("power"), PWR_CAPA, nvm.provided)..
+		power.formspec_label_bar(pos, 0, 0.8, S("power"), PWR_CAPA, nvm.provided)..
 		"image_button[2.8,2;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[2.8,2;1,1;"..self:get_state_tooltip(nvm).."]"
 end
diff --git a/coal_power_station/generator.lua b/coal_power_station/generator.lua
index 5a44f2d..e8c6e8c 100644
--- a/coal_power_station/generator.lua
+++ b/coal_power_station/generator.lua
@@ -32,7 +32,7 @@ local function formspec(self, pos, nvm)
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
-		power.formspec_label_bar(0, 0.8, S("power"), PWR_CAPA, nvm.provided)..
+		power.formspec_label_bar(pos, 0, 0.8, S("power"), PWR_CAPA, nvm.provided)..
 		"image_button[2.8,2;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[2.8,2;1,1;"..self:get_state_tooltip(nvm).."]"
 end
diff --git a/digtron/battery.lua b/digtron/battery.lua
index 239d983..021b955 100644
--- a/digtron/battery.lua
+++ b/digtron/battery.lua
@@ -49,7 +49,7 @@ local function formspec(self, pos, nvm)
 			default.gui_slots..
 			"box[0,-0.1;4.8,0.5;#c6e8ff]"..
 			"label[1,-0.1;"..minetest.colorize("#000000", S("Digtron Battery")).."]"..
-			power.formspec_label_bar(0, 0.8, S("Load"), TOTAL_MAX, total, S("Coal Equivalents"))..
+			power.formspec_label_bar(pos, 0, 0.8, S("Load"), TOTAL_MAX, total, S("Coal Equivalents"))..
 			"image_button[2.6,2;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 			"tooltip[2.6,2;1,1;"..self:get_state_tooltip(nvm).."]"..
 			"image[3.75,2;1,1;"..techage.get_power_image(pos, nvm).."]"
diff --git a/energy_storage/generator.lua b/energy_storage/generator.lua
index 78f172b..cd36b3a 100644
--- a/energy_storage/generator.lua
+++ b/energy_storage/generator.lua
@@ -32,7 +32,7 @@ local function formspec(self, pos, nvm)
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
-		power.formspec_label_bar(0, 0.8, S("Electricity"), PWR_CAPA, nvm.provided)..
+		power.formspec_label_bar(pos, 0, 0.8, S("Electricity"), PWR_CAPA, nvm.provided)..
 		"image_button[2.8,2;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[2.8,2;1,1;"..self:get_state_tooltip(nvm).."]"
 end
diff --git a/energy_storage/heatexchanger2.lua b/energy_storage/heatexchanger2.lua
index 6069e14..55fcf86 100644
--- a/energy_storage/heatexchanger2.lua
+++ b/energy_storage/heatexchanger2.lua
@@ -44,8 +44,8 @@ local function formspec(self, pos, nvm)
 		default.gui_slots..
 		"box[0,-0.1;5.8,0.5;#c6e8ff]"..
 		"label[2,-0.1;"..minetest.colorize( "#000000", S("Heat Exchanger")).."]"..
-		power.formspec_label_bar(0,   0.8, S("Electricity"), needed_max, needed)..
-		power.formspec_label_bar(3.5, 0.8, S("Thermal"), capa_max, capa, "")..
+		power.formspec_label_bar(pos, 0,   0.8, S("Electricity"), needed_max, needed)..
+		power.formspec_label_bar(pos, 3.5, 0.8, S("Thermal"), capa_max, capa, "")..
 		arrow..
 		"image_button[2.5,3;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[2.5,3;1,1;"..self:get_state_tooltip(nvm).."]"
diff --git a/furnace/cooking.lua b/furnace/cooking.lua
index 2f188aa..4583407 100644
--- a/furnace/cooking.lua
+++ b/furnace/cooking.lua
@@ -111,7 +111,7 @@ local function process(inv, recipe, output)
 	if recipe.waste then
 		local leftover = inv:add_item("dst", ItemStack(recipe.waste))
 		if leftover:get_count() > 0 then
-			inv:set_list("src", leftover)
+			inv:add_item("src", leftover)
 			return techage.BLOCKED
 		end
 	end
diff --git a/hydrogen/electrolyzer.lua b/hydrogen/electrolyzer.lua
index 2efcf25..13890c5 100644
--- a/hydrogen/electrolyzer.lua
+++ b/hydrogen/electrolyzer.lua
@@ -44,7 +44,7 @@ local function formspec(self, pos, nvm)
 		default.gui_slots..
 		"box[0,-0.1;5.8,0.5;#c6e8ff]"..
 		"label[2.5,-0.1;"..minetest.colorize( "#000000", S("Electrolyzer")).."]"..
-		techage.power.formspec_label_bar(0.1, 0.8, S("Electricity"), PWR_NEEDED, nvm.taken)..
+		techage.power.formspec_label_bar(pos, 0.1, 0.8, S("Electricity"), PWR_NEEDED, nvm.taken)..
 		arrow..
 		"image_button[3,2.5;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[3,2.5;1,1;"..self:get_state_tooltip(nvm).."]"..
diff --git a/hydrogen/fuelcell.lua b/hydrogen/fuelcell.lua
index 2c7e32a..1c1e040 100644
--- a/hydrogen/fuelcell.lua
+++ b/hydrogen/fuelcell.lua
@@ -48,7 +48,7 @@ local function formspec(self, pos, nvm)
 		arrow..
 		"image_button[2,2.5;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[2,2.5;1,1;"..self:get_state_tooltip(nvm).."]"..
-		techage.power.formspec_label_bar(3.5, 0.8, S("Electricity"), PWR_CAPA, nvm.given)
+		techage.power.formspec_label_bar(pos, 3.5, 0.8, S("Electricity"), PWR_CAPA, nvm.given)
 end
 
 local function start_node(pos, nvm, state)
diff --git a/power/formspecs.lua b/power/formspecs.lua
index c82f500..d8c0e2e 100644
--- a/power/formspecs.lua
+++ b/power/formspecs.lua
@@ -48,11 +48,24 @@ function techage.power.formspec_power_bar(max_power, current_power)
 	return "techage_form_level_bg.png^[lowpart:"..percent..":techage_form_level_fg.png"
 end
 
-function techage.power.formspec_label_bar(x, y, label, max_power, current_power, unit)
+function techage.power.formspec_label_bar(pos, x, y, label, max_power, current_power, unit)
 	local percent, ypos
-	current_power = current_power or 0
+	
 	max_power = max_power or 1
 	unit = unit or "ku"
+	
+	if current_power == 0 then
+		-- check if power network is overloaded
+		 if techage.power.network_overloaded(pos, techage.ElectricCable) then
+			return "container["..x..","..y.."]"..
+				"box[0,0;2.3,3.3;#395c74]"..
+				"label[0.2,0;"..label.."]"..
+				"label[0.7,0.4;"..max_power.." "..unit.."]"..
+				"image[0,0.5;1,3;techage_form_level_red_fg.png]"..
+				"container_end[]"
+		end 
+	end
+	current_power = current_power or 0
 	if current_power == 0 then
 		percent = 0
 		ypos = 2.8
diff --git a/power/node_api.lua b/power/node_api.lua
index 07d6a7a..1c4cc39 100644
--- a/power/node_api.lua
+++ b/power/node_api.lua
@@ -148,6 +148,17 @@ function techage.power.power_available(pos, Cable)
 	return netw and netw.on and netw.alive and netw.alive > 0
 end
 
+function techage.power.network_overloaded(pos, Cable)
+	local nvm = techage.get_nvm(pos)
+	local tlib_type = Cable.tube_type
+	local netID = nvm[Cable.tube_type] and nvm[Cable.tube_type]["netID"]
+	local netw = networks.has_network(tlib_type, netID)
+	if netw then
+		local sum = (netw.available1 or 0) + (netw.available2 or 0)
+		return sum > 0 and sum < (netw.needed1 or 0)
+	end
+end
+
 -- this is more a try to start, the start will be performed by on_power()
 function techage.power.consumer_start(pos, Cable, cycle_time)
 	local nvm = techage.get_nvm(pos)
diff --git a/power/power_terminal.lua b/power/power_terminal.lua
index ccf1988..a20852c 100644
--- a/power/power_terminal.lua
+++ b/power/power_terminal.lua
@@ -129,10 +129,10 @@ local function formspec(pos, nvm)
 		"box[0,-0.1;9.8,0.5;#c6e8ff]"..
 		"label[4,-0.1;"..minetest.colorize( "#000000", S("Network Data")).."]"..
 		"label[9.5,-0.1;"..minetest.colorize( "#000000", star).."]"..
-		power.formspec_label_bar(0,   0.7, S("Genera. 1"), gen1.pow_act, gen1.pow_used)..
-		power.formspec_label_bar(2.5, 0.7, S("Genera. 2"), gen2.pow_act, gen2.pow_used)..
-		power.formspec_label_bar(5,   0.7, S("Consum. 2"), con2.pow_act, con2.pow_used)..
-		power.formspec_label_bar(7.5, 0.7, S("Consum. 1"), con1.pow_act, con1.pow_used)..
+		power.formspec_label_bar(pos, 0,   0.7, S("Genera. 1"), gen1.pow_act, gen1.pow_used)..
+		power.formspec_label_bar(pos, 2.5, 0.7, S("Genera. 2"), gen2.pow_act, gen2.pow_used)..
+		power.formspec_label_bar(pos, 5,   0.7, S("Consum. 2"), con2.pow_act, con2.pow_used)..
+		power.formspec_label_bar(pos, 7.5, 0.7, S("Consum. 1"), con1.pow_act, con1.pow_used)..
 		"box[0,4.3;9.8,0.4;#c6e8ff]"..
 		"box[0,4.85;9.8,0.4;#395c74]"..
 		"box[0,5.35;9.8,0.4;#395c74]"..
diff --git a/solar/inverter.lua b/solar/inverter.lua
index b5ea96c..9b877f8 100644
--- a/solar/inverter.lua
+++ b/solar/inverter.lua
@@ -67,8 +67,8 @@ local function formspec(self, pos, nvm)
 		default.gui_slots..
 		"box[0,-0.1;5.8,0.5;#c6e8ff]"..
 		"label[2.5,-0.1;"..minetest.colorize( "#000000", S("Inverter")).."]"..
-		power.formspec_label_bar(0,   0.8, S("Power DC"), PWR_PERF, max_power)..
-		power.formspec_label_bar(3.5, 0.8, S("Power AC"), max_power, delivered)..
+		power.formspec_label_bar(pos, 0,   0.8, S("Power DC"), PWR_PERF, max_power)..
+		power.formspec_label_bar(pos, 3.5, 0.8, S("Power AC"), max_power, delivered)..
 		arrow..
 		"image_button[2.5,3;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[2.5,3;1,1;"..self:get_state_tooltip(nvm).."]"
diff --git a/steam_engine/flywheel.lua b/steam_engine/flywheel.lua
index 6d5bf1c..189a3bd 100644
--- a/steam_engine/flywheel.lua
+++ b/steam_engine/flywheel.lua
@@ -38,7 +38,7 @@ local function formspec(self, pos, nvm)
 		default.gui_bg..
 		default.gui_bg_img..
 		default.gui_slots..
-		power.formspec_label_bar(0, 0.8, S("power"), PWR_CAPA, nvm.provided)..
+		power.formspec_label_bar(pos, 0, 0.8, S("power"), PWR_CAPA, nvm.provided)..
 		"image_button[2.8,2;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[2.8,2;1,1;"..self:get_state_tooltip(nvm).."]"
 end
diff --git a/ta3_power/akkubox.lua b/ta3_power/akkubox.lua
index 17421a0..f5efc7a 100644
--- a/ta3_power/akkubox.lua
+++ b/ta3_power/akkubox.lua
@@ -36,7 +36,7 @@ local function formspec(self, pos, nvm)
 		default.gui_slots..
 		"box[0,-0.1;4.8,0.5;#c6e8ff]"..
 		"label[1,-0.1;"..minetest.colorize( "#000000", S("TA3 Akku Box")).."]"..
-		power.formspec_label_bar(0, 0.8, S("Load"), PWR_CAPA, capa)..
+		power.formspec_label_bar(pos, 0, 0.8, S("Load"), PWR_CAPA, capa)..
 		"image_button[2.6,2;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[3,2;1,1;"..self:get_state_tooltip(nvm).."]"..
 		"label[3.7,1.2;"..S("Electricity").."]"..
diff --git a/ta3_power/tiny_generator.lua b/ta3_power/tiny_generator.lua
index ffd3ff0..3d27862 100644
--- a/ta3_power/tiny_generator.lua
+++ b/ta3_power/tiny_generator.lua
@@ -39,7 +39,7 @@ local function formspec(self, pos, nvm)
 		"image[1.4,1.6;1,1;techage_form_arrow_bg.png^[transformR270]"..
 		"image_button[1.4,3.2;1,1;".. self:get_state_button_image(nvm) ..";state_button;]"..
 		"tooltip[1.5,3;1,1;"..self:get_state_tooltip(nvm).."]"..
-		power.formspec_label_bar(2.5, 0.8, S("Electricity"), PWR_CAPA, nvm.provided)
+		power.formspec_label_bar(pos, 2.5, 0.8, S("Electricity"), PWR_CAPA, nvm.provided)
 end
 
 local function play_sound(pos)