diff --git a/luxtronik/calculations.py b/luxtronik/calculations.py
index 007b1ce..2b8a4e4 100755
--- a/luxtronik/calculations.py
+++ b/luxtronik/calculations.py
@@ -314,4 +314,5 @@ def __init__(self):
             265: Unknown("Unknown_Calculation_265"),
             266: Unknown("Unknown_Calculation_266"),
             267: Celsius("Desired_Room_Temperature"),
+            268: Power("AC_Power_Input")
         }