diff --git a/tests/integration/study_data_blueprint/test_renewable.py b/tests/integration/study_data_blueprint/test_renewable.py
index 498a5b44dd..6737f53119 100644
--- a/tests/integration/study_data_blueprint/test_renewable.py
+++ b/tests/integration/study_data_blueprint/test_renewable.py
@@ -27,6 +27,7 @@
 import json
 import re
 
+import numpy as np
 import pytest
 from starlette.testclient import TestClient
 
@@ -133,7 +134,23 @@ def test_lifecycle(
         #  RENEWABLE CLUSTER MATRICES
         # =============================
 
-        # TODO: add unit tests for renewable cluster matrices
+        matrix = np.random.randint(0, 2, size=(8760, 1)).tolist()
+        matrix_path = f"input/renewables/series/{area_id}/{fr_solar_pv_id.lower()}/series"
+        args = {"target": matrix_path, "matrix": matrix}
+        res = client.post(
+            f"/v1/studies/{study_id}/commands",
+            json=[{"action": "replace_matrix", "args": args}],
+            headers={"Authorization": f"Bearer {user_access_token}"},
+        )
+        assert res.status_code in {200, 201}, res.json()
+
+        res = client.get(
+            f"/v1/studies/{study_id}/raw",
+            params={"path": matrix_path},
+            headers={"Authorization": f"Bearer {user_access_token}"},
+        )
+        assert res.status_code == 200
+        assert res.json()["data"] == matrix
 
         # ==================================
         #  RENEWABLE CLUSTER LIST / GROUPS
@@ -221,6 +238,7 @@ def test_lifecycle(
             f"/v1/studies/{study_id}/areas/{area_id}/renewable/{fr_solar_pv_id}?new_cluster_name={new_name}",
             headers={"Authorization": f"Bearer {user_access_token}"},
         )
+        # asserts the config is the same
         assert res.status_code in {200, 201}
         duplicated_config = copy.deepcopy(fr_solar_pv_cfg)
         duplicated_config["name"] = new_name
@@ -228,6 +246,16 @@ def test_lifecycle(
         duplicated_config["id"] = duplicated_id
         assert res.json() == duplicated_config
 
+        # asserts the matrix has also been duplicated
+        new_cluster_matrix_path = f"input/renewables/series/{area_id}/{duplicated_id.lower()}/series"
+        res = client.get(
+            f"/v1/studies/{study_id}/raw",
+            params={"path": new_cluster_matrix_path},
+            headers={"Authorization": f"Bearer {user_access_token}"},
+        )
+        assert res.status_code == 200
+        assert res.json()["data"] == matrix
+
         # =============================
         #  RENEWABLE CLUSTER DELETION
         # =============================
diff --git a/tests/integration/study_data_blueprint/test_st_storage.py b/tests/integration/study_data_blueprint/test_st_storage.py
index 8b1c8d162d..fbe8c89e33 100644
--- a/tests/integration/study_data_blueprint/test_st_storage.py
+++ b/tests/integration/study_data_blueprint/test_st_storage.py
@@ -124,14 +124,15 @@ def test_lifecycle__nominal(
         # =============================
 
         # updating the matrix of a short-term storage
-        array = np.random.rand(8760, 1) * 1000
+        array = np.random.randint(0, 1000, size=(8760, 1))
+        array_list = array.tolist()
         res = client.put(
             f"/v1/studies/{study_id}/areas/{area_id}/storages/{siemens_battery_id}/series/inflows",
             headers={"Authorization": f"Bearer {user_access_token}"},
             json={
                 "index": list(range(array.shape[0])),
                 "columns": list(range(array.shape[1])),
-                "data": array.tolist(),
+                "data": array_list,
             },
         )
         assert res.status_code == 200, res.json()
@@ -242,11 +243,21 @@ def test_lifecycle__nominal(
             headers={"Authorization": f"Bearer {user_access_token}"},
         )
         assert res.status_code in {200, 201}
+        # asserts the config is the same
         duplicated_config = copy.deepcopy(siemens_config)
         duplicated_config["name"] = new_name  # type: ignore
-        duplicated_config["id"] = transform_name_to_id(new_name)  # type: ignore
+        duplicated_id = transform_name_to_id(new_name)
+        duplicated_config["id"] = duplicated_id  # type: ignore
         assert res.json() == duplicated_config
 
+        # asserts the matrix has also been duplicated
+        res = client.get(
+            f"/v1/studies/{study_id}/areas/{area_id}/storages/{duplicated_id}/series/inflows",
+            headers={"Authorization": f"Bearer {user_access_token}"},
+        )
+        assert res.status_code == 200
+        assert res.json()["data"] == array_list
+
         # =============================
         #  SHORT-TERM STORAGE DELETION
         # =============================
diff --git a/tests/integration/study_data_blueprint/test_thermal.py b/tests/integration/study_data_blueprint/test_thermal.py
index 7514c6dfe6..43b3c1903c 100644
--- a/tests/integration/study_data_blueprint/test_thermal.py
+++ b/tests/integration/study_data_blueprint/test_thermal.py
@@ -31,6 +31,7 @@
 import json
 import re
 
+import numpy as np
 import pytest
 from starlette.testclient import TestClient
 
@@ -456,7 +457,23 @@ def test_lifecycle(
         #  THERMAL CLUSTER MATRICES
         # =============================
 
-        # TODO: add unit tests for thermal cluster matrices
+        matrix = np.random.randint(0, 2, size=(8760, 1)).tolist()
+        matrix_path = f"input/thermal/prepro/{area_id}/{fr_gas_conventional_id.lower()}/data"
+        args = {"target": matrix_path, "matrix": matrix}
+        res = client.post(
+            f"/v1/studies/{study_id}/commands",
+            json=[{"action": "replace_matrix", "args": args}],
+            headers={"Authorization": f"Bearer {user_access_token}"},
+        )
+        assert res.status_code in {200, 201}, res.json()
+
+        res = client.get(
+            f"/v1/studies/{study_id}/raw",
+            params={"path": matrix_path},
+            headers={"Authorization": f"Bearer {user_access_token}"},
+        )
+        assert res.status_code == 200
+        assert res.json()["data"] == matrix
 
         # ==================================
         #  THERMAL CLUSTER LIST / GROUPS
@@ -547,12 +564,23 @@ def test_lifecycle(
             headers={"Authorization": f"Bearer {user_access_token}"},
         )
         assert res.status_code in {200, 201}
+        # asserts the config is the same
         duplicated_config = copy.deepcopy(fr_gas_conventional_cfg)
         duplicated_config["name"] = new_name  # type: ignore
         duplicated_id = transform_name_to_id(new_name, lower=False)
         duplicated_config["id"] = duplicated_id  # type: ignore
         assert res.json() == duplicated_config
 
+        # asserts the matrix has also been duplicated
+        new_cluster_matrix_path = f"input/thermal/prepro/{area_id}/{duplicated_id.lower()}/data"
+        res = client.get(
+            f"/v1/studies/{study_id}/raw",
+            params={"path": new_cluster_matrix_path},
+            headers={"Authorization": f"Bearer {user_access_token}"},
+        )
+        assert res.status_code == 200
+        assert res.json()["data"] == matrix
+
         # =============================
         #  THERMAL CLUSTER DELETION
         # =============================