diff --git a/src/solver/simulation/include/antares/solver/simulation/solver.hxx b/src/solver/simulation/include/antares/solver/simulation/solver.hxx
index 7a4417c29ed..f20157e059b 100644
--- a/src/solver/simulation/include/antares/solver/simulation/solver.hxx
+++ b/src/solver/simulation/include/antares/solver/simulation/solver.hxx
@@ -491,9 +491,16 @@ void ISimulation<ImplementationType>::regenerateTimeSeries(uint year)
         if (refreshTSonCurrentYear)
         {
             auto clusters = getAllClustersToGen(study.areas, pData.haveToRefreshTSThermal);
-            fs::path savePath = fs::path(study.folderOutput.to<std::string>()) / "ts-generator"
-                                / "thermal" / "mc-" / std::to_string(year);
-            generateThermalTimeSeries(study, clusters, study.runtime->random[Data::seedTsGenThermal], savePath);
+            generateThermalTimeSeries(study, clusters, study.runtime->random[Data::seedTsGenThermal]);
+
+            bool archive = study.parameters.timeSeriesToArchive & Data::timeSeriesThermal;
+            bool doWeWrite = archive && !study.parameters.noOutput;
+            if (doWeWrite)
+            {
+                fs::path savePath = fs::path(study.folderOutput.to<std::string>()) / "ts-generator"
+                                    / "thermal" / "mc-" / std::to_string(year);
+                writeThermalTimeSeries(clusters, savePath);
+            }
 
             // apply the spinning if we generated some in memory clusters
             for (auto* cluster: clusters)
diff --git a/src/solver/ts-generator/availability.cpp b/src/solver/ts-generator/availability.cpp
index 959197de65e..6223ce2b071 100644
--- a/src/solver/ts-generator/availability.cpp
+++ b/src/solver/ts-generator/availability.cpp
@@ -612,8 +612,7 @@ void writeTStoDisk(const Matrix<>& series,
 
 bool generateThermalTimeSeries(Data::Study& study,
                                const std::vector<Data::ThermalCluster*>& clusters,
-                               MersenneTwister& thermalRandom,
-                               const fs::path& savePath)
+                               MersenneTwister& thermalRandom)
 {
     logs.info();
     logs.info() << "Generating the thermal time-series";
@@ -629,14 +628,12 @@ bool generateThermalTimeSeries(Data::Study& study,
         generator.run(tsGenerationData);
     }
 
-    bool archive = study.parameters.timeSeriesToArchive & Data::timeSeriesThermal;
-    bool doWeWrite = archive && !study.parameters.noOutput;
-    if (! doWeWrite)
-    {
-        logs.info() << "Study parameters forbid writing thermal TS.";
-        return true;
-    }
+    return true;
+}
 
+void writeThermalTimeSeries(const std::vector<Data::ThermalCluster*>& clusters,
+                            const fs::path& savePath)
+{
     for (auto* cluster: clusters)
     {
         auto areaName = cluster->parentArea->id.to<std::string>();
@@ -645,8 +642,6 @@ bool generateThermalTimeSeries(Data::Study& study,
 
         writeTStoDisk(cluster->series.timeSeries, filePath);
     }
-
-    return true;
 }
 
 // gp : we should try to add const identifiers before args here
diff --git a/src/solver/ts-generator/include/antares/solver/ts-generator/generator.h b/src/solver/ts-generator/include/antares/solver/ts-generator/generator.h
index ef60d6a9d43..15b7522b43b 100644
--- a/src/solver/ts-generator/include/antares/solver/ts-generator/generator.h
+++ b/src/solver/ts-generator/include/antares/solver/ts-generator/generator.h
@@ -109,8 +109,10 @@ bool GenerateTimeSeries(Data::Study& study, uint year, IResultWriter& writer);
 
 bool generateThermalTimeSeries(Data::Study& study,
                                const std::vector<Data::ThermalCluster*>& clusters,
-                               MersenneTwister& thermalRandom,
-                               const fs::path& savePath);
+                               MersenneTwister& thermalRandom);
+
+void writeThermalTimeSeries(const std::vector<Data::ThermalCluster*>& clusters,
+                            const fs::path& savePath);
 
 bool generateLinkTimeSeries(std::vector<LinkTSgenerationParams>& links,
                             StudyParamsForLinkTS&,
diff --git a/src/tools/ts-generator/main.cpp b/src/tools/ts-generator/main.cpp
index 3550f1720de..caffb0e6a0b 100644
--- a/src/tools/ts-generator/main.cpp
+++ b/src/tools/ts-generator/main.cpp
@@ -79,21 +79,12 @@ int main(int argc, char* argv[])
     // ============ THERMAL : Getting data for generating time-series =========
     auto study = std::make_shared<Data::Study>(true);
     Data::StudyLoadOptions studyOptions;
-    studyOptions.prepareOutput = true;
-
     if (!study->loadFromFolder(settings.studyFolder, studyOptions))
     {
         logs.error() << "Invalid study given to the generator";
         return 1;
     }
 
-    // Forces the writing of generated TS into the study's output sub-folder
-    study->parameters.timeSeriesToArchive |= Antares::Data::timeSeriesThermal;
-
-    auto thermalSavePath = fs::path(settings.studyFolder) / "output" / FormattedTime("%Y%m%d-%H%M");
-    thermalSavePath /= "ts-generator";
-    thermalSavePath /= "thermal";
-
     std::vector<Data::ThermalCluster*> clusters;
     if (settings.allThermal)
     {
@@ -105,7 +96,6 @@ int main(int argc, char* argv[])
     }
     // ========================================================================
 
-
     LinksTSgenerator linksTSgenerator(settings);
     linksTSgenerator.extractData();
 
@@ -115,8 +105,13 @@ int main(int argc, char* argv[])
 
     bool ret = TSGenerator::generateThermalTimeSeries(*study,
                                                       clusters,
-                                                      thermalRandom,
-                                                      thermalSavePath);
+                                                      thermalRandom);
+
+    auto thermalSavePath = fs::path(settings.studyFolder) / "output" / FormattedTime("%Y%m%d-%H%M");
+    thermalSavePath /= "ts-generator";
+    thermalSavePath /= "thermal";
+
+    writeThermalTimeSeries(clusters, thermalSavePath);
 
     ret = linksTSgenerator.generate() && ret;