diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index 1474613d..1634e76c 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -2,9 +2,9 @@
 # Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
 on:
   push:
-    branches: [main, master]
+    branches: [main, master, develop]
   pull_request:
-    branches: [main, master]
+    branches: [main, master, develop]
 
 name: R-CMD-check
 
diff --git a/.github/workflows/test-coverage.yaml b/.github/workflows/test-coverage.yaml
index 3ae39f94..3cd19899 100644
--- a/.github/workflows/test-coverage.yaml
+++ b/.github/workflows/test-coverage.yaml
@@ -2,9 +2,9 @@
 # Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
 on:
   push:
-    branches: [main, master]
+    branches: [main, master, develop]
   pull_request:
-    branches: [main, master]
+    branches: [main, master, develop]
 
 name: test-coverage
 
diff --git a/NEWS.md b/NEWS.md
index f4174eee..5d80e499 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -24,6 +24,8 @@ BREAKING CHANGES :
 * `api_get()` has a new parameter to control JSON file parsing
 * `readInputThermal()` default value when no time series in the selected clusters.
 * `readInputRES()` default value when no time series in the selected clusters
+* `readClusterDesc()`/ `readClusterRESDesc()` / `readClusterSTDesc()` 
+return empty dataTable and warning if no cluster in Antares study.
 
 # antaresRead 2.6.0
 
diff --git a/R/readClusterDesc.R b/R/readClusterDesc.R
index 4f0e9195..dad0515e 100644
--- a/R/readClusterDesc.R
+++ b/R/readClusterDesc.R
@@ -89,7 +89,6 @@ readClusterSTDesc <- function(opts = simOptions()) {
 }
 
 
-  
 .readClusterDesc <- function(opts = simOptions(), 
                              dir = "thermal/clusters") {
   
@@ -107,7 +106,11 @@ readClusterSTDesc <- function(opts = simOptions()) {
   
   path <- file.path(opts$inputPath, dir)
   
-  if(opts$typeLoad == 'api'){
+  columns <- .generate_columns_by_type(dir = dir)
+  api_study <- is_api_study(opts)
+  
+  if(api_study){
+    
     jsoncld <- read_secure_json(paste0(path, "&depth=4"), token = opts$token, timeout = opts$timeout, config = opts$httr_config)
     res <-  rbindlist(mapply(function(X1, Y1){
       clusters <- rbindlist(
@@ -123,10 +126,6 @@ readClusterSTDesc <- function(opts = simOptions()) {
       clusters[, .SD, .SDcols = order(names(clusters))]
     },jsoncld, names(jsoncld), SIMPLIFY = FALSE), fill = TRUE)
     
-    if(length(res) == 0) 
-      stop("Cannot find cluster description.", call. = FALSE)
-    
-    res <-  res[, .SD, .SDcols = c("area", "name", "group", names(res)[!names(res) %in%c("area", "name", "group")])]
     
   }else{
     
@@ -146,12 +145,37 @@ readClusterSTDesc <- function(opts = simOptions()) {
     
   }
   
-  if(length(res) == 0) stop("Cannot find cluster description.", call. = FALSE)
+  if(length(res) == 0){
+    mandatory_cols <- c("area","cluster")
+    warning("No cluster description available.", call. = FALSE)
+    res <- setNames(data.table(matrix(nrow = 0, ncol = length(mandatory_cols) + length(columns))), c(mandatory_cols, columns))
+  }else{
+    if(api_study){
+      mandatory_cols <- c("area", "name", "group")
+      additional_cols <- setdiff(colnames(res),mandatory_cols)
+      res <- res[, .SD, .SDcols = c(mandatory_cols, additional_cols)]
+    }
+    res <- as.data.table(res)
+    setnames(res, "name", "cluster")
+    res$cluster <- as.factor(tolower(res$cluster))
+  }
   
-  res <- as.data.table(res)
-  setnames(res, "name", "cluster")
+  res
+}
+
+.generate_columns_by_type <- function(dir = c("thermal/clusters", "renewables/clusters", "st-storage/clusters")) {
   
-  res$cluster <- as.factor(tolower(res$cluster))
   
-  res
+  columns <- switch(
+    dir,
+    "thermal/clusters" = c("group","enabled","must_run","unit_count","nominal_capacity",
+                           "min_stable_power","spinning","min_up_time","min_down_time",
+                           "co2","marginal_cost","fixed_cost","startup_cost","market_bid_cost",
+                           "spread_cost","ts_gen","volatility_forced","volatility_planned",
+                           "law_forced","law_planned"),
+    
+    "renewables/clusters" = c("group","ts_interpretation","enabled","unit_count","nominal_capacity")
+    #"st-storage/clusters" =  #ATTENTE DEV COTé API
+  )
+  return(columns)
 }
diff --git a/tests/testthat/test-readClusterDesc.R b/tests/testthat/test-readClusterDesc.R
index f62dd764..c7d14398 100644
--- a/tests/testthat/test-readClusterDesc.R
+++ b/tests/testthat/test-readClusterDesc.R
@@ -1,9 +1,42 @@
 
-## v860 ----
+# v860 ----
 
 path_study_test <- grep(pattern = "86", x = studyPathSV8, value = TRUE)
 opts_study_test <- setSimulationPath(path_study_test, simulation = "input")
 
+#minimal columns
+mandatory_cols <- c("area","cluster")
+
+## Thermal ----
+test_that("test read cluster", {
+  
+  # function setSimulationPath() provide areas names with st-storage clusters
+  areas <- opts_study_test$areasWithClusters
+  
+  # read clusters informations
+  input <- readClusterDesc()
+  
+  # tests
+  testthat::expect_true("data.table" %in% class(input))
+  testthat::expect_true(all(areas %in% unique(readClusterDesc()$area)))
+  testthat::expect_true(all(mandatory_cols %in% colnames(input)))
+  testthat::expect_true(nrow(input) == length(input$cluster))
+  
+})
+
+## Renewables ----
+test_that("test read cluster renewables", {
+  
+  # function setSimulationPath() provide areas names with st-storage clusters
+  areas_res <- opts_study_test$areasWithRESClusters
+  
+  #Study not renewables (need activateRES() from antaresEditObject)
+  expect_error(readClusterResDesc(),
+               regexp = "readClusterDesc is available only on studies with 'renewable-generation-modelling'")
+  
+})
+
+## st-storage ----
 test_that("test read cluster st-storage v860", {
   
   # function setSimulationPath() provide areas names with st-storage clusters
@@ -14,5 +47,8 @@ test_that("test read cluster st-storage v860", {
   
   # tests
   testthat::expect_true("data.table" %in% class(input_st))
-  testthat::expect_true(areas_st %in% unique(readClusterSTDesc()$area))
+  testthat::expect_true(all(areas_st %in% unique(readClusterSTDesc()$area)))
+  testthat::expect_true(all(mandatory_cols %in% colnames(input_st)))
+  testthat::expect_true(nrow(input_st) == length(input_st$cluster))
+  
 })