diff --git a/README.md b/README.md
index 3866bbf..e163c1f 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,17 @@ A simple DIY plant growing system (for cannabis).
 
 # WORK IN PROGRESS
 
+## Motivation
+
+I want to build a simple grow system, which I can power by my off-grid
+12V solar system. So this project is limited to a small 40x40x120 tent
+for one plant with a 50W 12V grow LED light.
+
+As I did it for my solar system, the measurements of this project will be shown
+on my website. For that a REST API is planned.
+
+I want to automate as much as possible which makes sense and is easy to build.
+
 ## Features
 
 - Measure values