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@@ -33,6 +33,8 @@ If you have a list of adresses (in swizerland) you can use the Sonnendach Applic
 * PV Production 75: Energy with three quarters of roof surface covered – typical use
 * PV Production 100: produced Energy with roof surface fully covered – optimum use
 * Value Electricity production: Value in CHF with roof surface fully covered – optimum use
+* Existing PV Power: Value in kwh of the existing PV-System
+* Existing PV Date: Date of the first operation of the existing PV-System
 
 ### 2. Save the List in the csv.
 For example, you can save the list as a csv file with excel by using the "save as" option to save the file again and selecting csv as the format.