diff --git a/docs/ecolyo/functionalities/initialization.md b/docs/ecolyo/functionalities/initialization.md
index 8c8bbb0db13e1a3dd6f20070e5604eef22f53125..1747cb9370517d3ca8c762c2684bf561a7a25461 100644
--- a/docs/ecolyo/functionalities/initialization.md
+++ b/docs/ecolyo/functionalities/initialization.md
@@ -133,3 +133,27 @@ UserDuelEntity {
 ### Data managment schema
 
 ![Data Scheme](/img/challengeFlow.png)
+
+## Redux
+
+There are two main store created for this app:
+
+- Cozy: store information about cozy (konnectors, accounts, settings, db)
+- Ecolyo: store all states used for this app
+
+For a better state management, combineReducers(reducers) is used to split the reducing function into seperate functions. So, each managing independent parts of the state.
+
+### Ecolyo Store Structure
+
+| Reducer   | Type           | Description                                                                                                                                                                                                                                                                                                                                                                    |
+| --------- | -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
+| global    | GlobalState    | store global states such as: notification, type device or fluid type<br><br>GlobalState enum<br>- _screenType = ScreenType_<br>- _challengeExplorationNotification = boolean_<br>- _challengeActionNotification = boolean_<br>- _challengeDuelNotification = boolean_<br>- _analysisNotification = boolean_<br>- _fluidStatus = FluidStatus[]_<br>- _fluidTypes = FluidType[]_ |
+| profile   | Profile        | store states about profile information such as: notification, connectionDate, profileType                                                                                                                                                                                                                                                                                      |
+| chart     | ChartState     | store consumption chart states such as: timeStep, graph data<br><br>ChartState enum<br>- _selectedDate = DateTime_<br>- _currentTimeStep = TimeStep_<br>- _currentIndex = number_<br>- _currentDatachart = Datachart_<br>- _currentDatachartIndex = number_<br>- _loading = boolean_                                                                                           |
+| modal     | ModalState     | store opening state of the feedback modal <br><br>ModalState enum<br>- _isFeedbacksOpen = boolean_                                                                                                                                                                                                                                                                             |
+| challenge | ChallengeState | store challenge state such as: list of user challenge, data load and current challenge <br><br>ChallengeState enum<br>- _userChallengeList = UserChallenge[]_<br>- _currentChallenge = UserChallenge_<br>- _currentDataload = Dataload[]_                                                                                                                                      |
+
+### Updating state process
+
+Redux-thunk middleware is configured. For now, it is used only for updating the profile.
+To update a state, a webservice method is called before trigger a state change inside the store.