diff --git a/README.md b/README.md
index fed800e21f010ccc20e383f699de091056f313fb..8400e586eb0c5324c3026f2323078455d8c0f45d 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,7 @@
           - Gitflow: ecolyo/application/gitflow.md
           - Deploy: ecolyo/application/deploy.md
         - Konnectors:
+          - Introduction: ecolyo/konnectors/index.md
           - Enedis: ecolyo/konnectors/enedis.md
           - GRDF: ecolyo/konnectors/grdf.md
           - Eau du Grand Lyon: ecolyo/konnectors/egl.md
diff --git a/docs/konnectors/index.md b/docs/konnectors/index.md
new file mode 100644
index 0000000000000000000000000000000000000000..796b6409c1ffd464210aae9d19ea505495473cb4
--- /dev/null
+++ b/docs/konnectors/index.md
@@ -0,0 +1,13 @@
+Konnectors are scripts that import data from a web service and put those data into cozy. Each konnector is an independant application managed by the cozy home application.
+
+Ecolyo uses data from 3 web services : 
+
+- Enedis
+- Grdf
+- Eau du grand lyon (EGL)
+
+All the konnectors are configured to retrieve user's data as far as 3 years back.
+Some variation have to be considered :
+
+- When the user launches the konnector manually, it fetches 1 year of data (in order to reduce running time).
+- When a konnector is launched by the cozy stack (at a random time between 10am and 11am), it fetches 3 years of data.
\ No newline at end of file
diff --git a/mkdocs.yml b/mkdocs.yml
index 6599ccdd40dfbe95e175d26114535317757ea5fd..92a864349f8a1fe44ecb0c054d165601e9d7bd40 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -98,6 +98,7 @@ nav:
               - Launch local doctypes: pilote/Pilote - Usager/getting_started/launch_local_doctypes.md
               - Launch local services: pilote/Pilote - Usager/getting_started/launch_local_services.md
   - Konnectors:
+      - Introduction: konnectors/index.md
       - Enedis: konnectors/enedis.md
       - GRDF: konnectors/grdf.md
       - Eau du Grand Lyon: konnectors/egl.md