diff --git a/index.js b/index.js
index 2ce1d02deb02521900f4af22837e50c33a0f84c6..9aecf511612f0d4583d79b12967040d8130faa3e 100644
--- a/index.js
+++ b/index.js
@@ -329,9 +329,9 @@ function format(response) {
   log('info', 'filtered size is : ' + dataLen)
   const mapData = data.map((value, index) => {
     const time = moment(value.DateReleve, moment.ISO_8601)
-    if (index + 1 < dataLen) {
+    if (index !== 0 && index < dataLen) {
       return {
-        load: data[index + 1].ValeurIndex - value.ValeurIndex,
+        load: value.ValeurIndex - data[index - 1].ValeurIndex,
         year: parseInt(time.format('YYYY')),
         month: parseInt(time.format('M')),
         day: parseInt(time.format('D')),
@@ -138046,7 +138046,7 @@ const fs = __webpack_require__(167);
 
 const path = __webpack_require__(160);
 
-let manifest = typeof {"version":"0.2.2","name":"EGL","type":"konnector","language":"node","icon":"icon.png","slug":"eglgrandlyon","source":"https://forge.grandlyon.com/web-et-numerique/llle_project/egl-konnector.git","editor":"Métropole de Lyon","vendor_link":"www.grandlyon.com","frequency":"daily","categories":["energy"],"fields":{"login":{"type":"text"},"password":{"type":"password"},"advancedFields":{"folderPath":{"advanced":true,"isRequired":false}}},"data_types":[],"screenshots":[],"permissions":{"egl data":{"type":"com.grandlyon.egl.*"},"accounts":{"type":"io.cozy.accounts","verbs":["GET"]}},"developer":{"name":"Métropole de Lyon","url":"https://grandlyon.com"},"langs":["fr"],"locales":{"fr":{"short_description":"Courbe de charge depuis l'API eau du Grand Lyon","long_description":"ce connecteur récupère la courbe de charge enregistrée par le compteur Téléo","permissions":{"egl data":{"description":"La courbe de charge enregistrée par le compteur téléo"},"accounts":{"description":"Utilisé pour obtenir les données du compte"}}}},"manifest_version":"2"} === 'undefined' ? {} : {"version":"0.2.2","name":"EGL","type":"konnector","language":"node","icon":"icon.png","slug":"eglgrandlyon","source":"https://forge.grandlyon.com/web-et-numerique/llle_project/egl-konnector.git","editor":"Métropole de Lyon","vendor_link":"www.grandlyon.com","frequency":"daily","categories":["energy"],"fields":{"login":{"type":"text"},"password":{"type":"password"},"advancedFields":{"folderPath":{"advanced":true,"isRequired":false}}},"data_types":[],"screenshots":[],"permissions":{"egl data":{"type":"com.grandlyon.egl.*"},"accounts":{"type":"io.cozy.accounts","verbs":["GET"]}},"developer":{"name":"Métropole de Lyon","url":"https://grandlyon.com"},"langs":["fr"],"locales":{"fr":{"short_description":"Courbe de charge depuis l'API eau du Grand Lyon","long_description":"ce connecteur récupère la courbe de charge enregistrée par le compteur Téléo","permissions":{"egl data":{"description":"La courbe de charge enregistrée par le compteur téléo"},"accounts":{"description":"Utilisé pour obtenir les données du compte"}}}},"manifest_version":"2"};
+let manifest = typeof {"version":"1.0.0","name":"EGL","type":"konnector","language":"node","icon":"icon.png","slug":"eglgrandlyon","source":"https://forge.grandlyon.com/web-et-numerique/llle_project/egl-konnector.git","editor":"Métropole de Lyon","vendor_link":"www.grandlyon.com","frequency":"daily","categories":["energy"],"fields":{"login":{"type":"text"},"password":{"type":"password"},"advancedFields":{"folderPath":{"advanced":true,"isRequired":false}}},"data_types":[],"screenshots":[],"permissions":{"egl data":{"type":"com.grandlyon.egl.*"},"accounts":{"type":"io.cozy.accounts","verbs":["GET"]}},"developer":{"name":"Métropole de Lyon","url":"https://grandlyon.com"},"langs":["fr"],"locales":{"fr":{"short_description":"Courbe de charge depuis l'API eau du Grand Lyon","long_description":"ce connecteur récupère la courbe de charge enregistrée par le compteur Téléo","permissions":{"egl data":{"description":"La courbe de charge enregistrée par le compteur téléo"},"accounts":{"description":"Utilisé pour obtenir les données du compte"}}}},"manifest_version":"2"} === 'undefined' ? {} : {"version":"1.0.0","name":"EGL","type":"konnector","language":"node","icon":"icon.png","slug":"eglgrandlyon","source":"https://forge.grandlyon.com/web-et-numerique/llle_project/egl-konnector.git","editor":"Métropole de Lyon","vendor_link":"www.grandlyon.com","frequency":"daily","categories":["energy"],"fields":{"login":{"type":"text"},"password":{"type":"password"},"advancedFields":{"folderPath":{"advanced":true,"isRequired":false}}},"data_types":[],"screenshots":[],"permissions":{"egl data":{"type":"com.grandlyon.egl.*"},"accounts":{"type":"io.cozy.accounts","verbs":["GET"]}},"developer":{"name":"Métropole de Lyon","url":"https://grandlyon.com"},"langs":["fr"],"locales":{"fr":{"short_description":"Courbe de charge depuis l'API eau du Grand Lyon","long_description":"ce connecteur récupère la courbe de charge enregistrée par le compteur Téléo","permissions":{"egl data":{"description":"La courbe de charge enregistrée par le compteur téléo"},"accounts":{"description":"Utilisé pour obtenir les données du compte"}}}},"manifest_version":"2"};
 
 if (false) {}
 
diff --git a/manifest.konnector b/manifest.konnector
index 3d5322a950ab5bd19b5a79e093b1442ce45a9999..7a8b06b4b048c8a006e1f71e2e381009345a29a1 100644
--- a/manifest.konnector
+++ b/manifest.konnector
@@ -1,5 +1,5 @@
 {
-  "version": "0.2.2",
+  "version": "1.0.0",
   "name": "EGL",
   "type": "konnector",
   "language": "node",
diff --git a/package.json b/package.json
index d3a15e9bb80c03b1ad9e4901b9437d7b0d815e3f..77cde659249692df546081d944d5eb7eff9e353e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "egl",
-  "version": "0.2.2",
+  "version": "1.0.0",
   "description": "",
   "repository": {
     "type": "git",