diff --git a/scenen/scene02.lua b/scenen/scene02.lua
index c8e4ab2..52790ef 100644
--- a/scenen/scene02.lua
+++ b/scenen/scene02.lua
@@ -99,6 +99,252 @@ function scene:show( event )
 		print("Cookie:" .. tostring(currentCookie))
 		
         
+		-- Funktion zur Anzeige des Balkendiagramms
+		local function displayBarChart(dataSets)
+			-- Entferne alte Diagramm-Anzeigen
+			for i = sceneGroup.numChildren, 1, -1 do
+				local child = sceneGroup[i]
+				if child._isChartDisplay then
+					child:removeSelf()
+				end
+			end
+			
+			if not dataSets or type(dataSets) ~= "table" then
+				print("Keine Daten zum Anzeigen")
+				return
+			end
+			
+			-- Definiere Farben für die Devices
+			local deviceColors = {
+				["Traun"] = {0.2, 0.4, 0.9},      -- Blau
+				["Lannach"] = {0.3, 0.8, 0.4},    -- Grün
+				["Sarleinsbach"] = {0.95, 0.6, 0.2} -- Orange
+			}
+			
+			-- Parameter für das Diagramm
+			local chartX = display.contentCenterX
+			local chartY = 150
+			local chartWidth = display.contentWidth - 40
+			local chartHeight = 180
+			
+			-- Hintergrund für das Diagramm
+			local chartBg = display.newRoundedRect(sceneGroup, chartX, chartY, chartWidth, chartHeight, 8)
+			chartBg:setFillColor(1, 1, 1)
+			chartBg.strokeWidth = 2
+			chartBg:setStrokeColor(0.7, 0.7, 0.7)
+			chartBg._isChartDisplay = true
+			
+			-- Titel
+			local titleText = display.newText({
+				parent = sceneGroup,
+				text = "Wochenübersicht (kW)",
+				x = chartX,
+				y = chartY - chartHeight/2 - 15,
+				fontSize = 16,
+				font = native.systemFontBold
+			})
+			titleText:setFillColor(0.2, 0.2, 0.2)
+			titleText._isChartDisplay = true
+			
+			-- Organisiere Daten nach Tag
+			local dayData = {} -- { ["2024-05-20"] = { Traun = value, Lannach = value, Sarleinsbach = value } }
+			local maxValue = 0
+			
+			for deviceName, dataSet in pairs(dataSets) do
+				if not dataSet.error and type(dataSet) == "table" and #dataSet > 0 then
+					for _, meter in ipairs(dataSet) do
+						if meter.values and #meter.values > 0 then
+							for _, valueData in ipairs(meter.values) do
+								if valueData.value and valueData.datetime then
+									local date = valueData.datetime:match("(%d%d%d%d%-%d%d%-%d%d)")
+									if date then
+										if not dayData[date] then
+											dayData[date] = {}
+										end
+										dayData[date][deviceName] = valueData.value
+										maxValue = math.max(maxValue, valueData.value)
+									end
+								end
+							end
+							break -- Nur das erste Meter pro Device
+						end
+					end
+				end
+			end
+			
+			-- Sortiere Tage
+			local sortedDays = {}
+			for day in pairs(dayData) do
+				table.insert(sortedDays, day)
+			end
+			table.sort(sortedDays)
+			
+			if #sortedDays == 0 then
+				local noDataText = display.newText({
+					parent = sceneGroup,
+					text = "Keine Daten zum Anzeigen",
+					x = chartX,
+					y = chartY,
+					fontSize = 14
+				})
+				noDataText:setFillColor(0.5, 0.5, 0.5)
+				noDataText._isChartDisplay = true
+				return
+			end
+			
+			-- Berechne Diagramm-Parameter
+			local graphLeft = chartX - chartWidth/2 + 30
+			local graphRight = chartX + chartWidth/2 - 10
+			local graphTop = chartY - chartHeight/2 + 25
+			local graphBottom = chartY + chartHeight/2 - 35
+			local graphWidth = graphRight - graphLeft
+			local graphHeight = graphBottom - graphTop
+			
+			-- Zeichne Y-Achse
+			local yAxis = display.newLine(sceneGroup, graphLeft, graphTop, graphLeft, graphBottom)
+			yAxis:setStrokeColor(0.5, 0.5, 0.5)
+			yAxis.strokeWidth = 2
+			yAxis._isChartDisplay = true
+			
+			-- Zeichne X-Achse
+			local xAxis = display.newLine(sceneGroup, graphLeft, graphBottom, graphRight, graphBottom)
+			xAxis:setStrokeColor(0.5, 0.5, 0.5)
+			xAxis.strokeWidth = 2
+			xAxis._isChartDisplay = true
+			
+			-- Y-Achsen-Beschriftung
+			local maxLabel = display.newText({
+				parent = sceneGroup,
+				text = string.format("%.0f", maxValue),
+				x = graphLeft - 15,
+				y = graphTop,
+				fontSize = 9
+			})
+			maxLabel:setFillColor(0.4, 0.4, 0.4)
+			maxLabel._isChartDisplay = true
+			
+			local zeroLabel = display.newText({
+				parent = sceneGroup,
+				text = "0",
+				x = graphLeft - 15,
+				y = graphBottom,
+				fontSize = 9
+			})
+			zeroLabel:setFillColor(0.4, 0.4, 0.4)
+			zeroLabel._isChartDisplay = true
+			
+			-- Zeichne Balken für jeden Tag
+			local dayWidth = graphWidth / #sortedDays
+			local barSpacing = 4
+			local barWidth = dayWidth - barSpacing * 2
+			
+			for i, day in ipairs(sortedDays) do
+				local dayX = graphLeft + (i - 0.5) * dayWidth
+				local data = dayData[day]
+				
+				-- Datum-Label
+				local dayLabel = display.newText({
+					parent = sceneGroup,
+					text = day:match("%d%d%-%d%d$"), -- Nur MM-DD
+					x = dayX,
+					y = graphBottom + 12,
+					fontSize = 8
+				})
+				dayLabel:setFillColor(0.3, 0.3, 0.3)
+				dayLabel._isChartDisplay = true
+				
+				-- Berechne Gesamtwert für diesen Tag
+				local totalValue = 0
+				local deviceOrder = {"Traun", "Lannach", "Sarleinsbach"}
+				for _, deviceName in ipairs(deviceOrder) do
+					totalValue = totalValue + (data[deviceName] or 0)
+				end
+				
+				if totalValue > 0 then
+					-- Zeichne gestapelten Balken - prozentual zur vollen Diagrammhöhe
+					local currentY = graphBottom
+					
+					for _, deviceName in ipairs(deviceOrder) do
+						local value = data[deviceName] or 0
+						if value > 0 then
+							-- Berechne Segment-Höhe proportional zum Anteil am Gesamtwert
+							-- Balken nutzt die volle Höhe, Segmente sind prozentual
+							local percentage = value / totalValue
+							local segmentHeight = percentage * graphHeight
+							local segmentY = currentY - segmentHeight/2
+							
+							-- Segment
+							local segment = display.newRect(sceneGroup, dayX, segmentY, barWidth, segmentHeight)
+							local color = deviceColors[deviceName] or {0.5, 0.5, 0.5}
+							segment:setFillColor(unpack(color))
+							segment.strokeWidth = 1
+							segment:setStrokeColor(0.9, 0.9, 0.9)
+							segment._isChartDisplay = true
+							
+							-- Wert-Label im Segment (wenn genug Platz)
+							if segmentHeight > 12 then
+								local valueLabel = display.newText({
+									parent = sceneGroup,
+									text = string.format("%d\n%.0f%%", value, percentage * 100),
+									x = dayX,
+									y = segmentY,
+									fontSize = 7,
+									font = native.systemFontBold
+								})
+								valueLabel:setFillColor(1, 1, 1)
+								valueLabel._isChartDisplay = true
+							end
+							
+							-- Bewege Y-Position nach oben für nächstes Segment
+							currentY = currentY - segmentHeight
+						end
+					end
+					
+					-- Gesamtwert über dem Balken
+					local totalLabel = display.newText({
+						parent = sceneGroup,
+						text = string.format("%d", totalValue),
+						x = dayX,
+						y = graphTop - 8,
+						fontSize = 8,
+						font = native.systemFontBold
+					})
+					totalLabel:setFillColor(0.2, 0.2, 0.2)
+					totalLabel._isChartDisplay = true
+				end
+			end
+			
+			-- Legende
+			local legendY = chartY + chartHeight/2 + 20
+			local legendDevices = {
+				{name = "Traun", color = deviceColors["Traun"]},
+				{name = "Lannach", color = deviceColors["Lannach"]},
+				{name = "Sarleinsbach", color = deviceColors["Sarleinsbach"]}
+			}
+			
+			for i, legend in ipairs(legendDevices) do
+				local legendX = chartX - 90 + ((i - 1) * 90)
+				
+				-- Farbbox
+				local colorBox = display.newRect(sceneGroup, legendX - 20, legendY, 12, 8)
+				colorBox:setFillColor(unpack(legend.color))
+				colorBox._isChartDisplay = true
+				
+				-- Device Name
+				local legendText = display.newText({
+					parent = sceneGroup,
+					text = legend.name,
+					x = legendX + 10,
+					y = legendY,
+					fontSize = 10
+				})
+				legendText:setFillColor(0.3, 0.3, 0.3)
+				legendText._isChartDisplay = true
+			end
+			
+			print("✓ Balkendiagramm erstellt für " .. #sortedDays .. " Tage")
+		end
+        
 		-- Funktion zum Neuladen der Daten
 		local function reloadDataFromSevenDays()
 			if not currentCookie or not devices or not selectedDate then
@@ -151,7 +397,10 @@ function scene:show( event )
 					print(json.prettify(currentDataSets))
 					print("===============================================================\n")
                     -- Zeige neue Daten
-                    print("✓ Daten erfolgreich geladen")
+					print("✓ Daten erfolgreich geladen")
+					
+					-- Zeige Balkendiagramm
+					displayBarChart(currentDataSets)
 				end
 			end