diff --git a/Home.md b/Home.md
index c5a1f70..6e074d1 100644
--- a/Home.md
+++ b/Home.md
@@ -31,6 +31,7 @@ If you have a list of adresses (in swizerland) you can use the Sonnendach Applic
 * Image Filename qrcode: the Filename of the screeshot it creates from the map
 * PV Production 75: Energy with three quarters of roof surface covered – typical use
 * Value Electricity production: Value in CHF with roof surface fully covered – optimum use
+* Roof Area: The Area in m^2
 * Existing PV Power: Value in kwh of the existing PV-System
 * Existing PV Date: Date of the first operation of the existing PV-System
 * Coordinate X: latitude