diff --git a/src/andromede/study/data.py b/src/andromede/study/data.py
index 958ff378..cdfd4fba 100644
--- a/src/andromede/study/data.py
+++ b/src/andromede/study/data.py
@@ -105,7 +105,9 @@ def check_requirement(self, time: bool, scenario: bool) -> bool:
 
 
 def load_ts_from_txt(file_ts: Optional[str]) -> pd.DataFrame:
-    path = Path(str(file_ts))
+    base_path = Path.cwd().resolve().parent / "data"
+    if file_ts is not None:
+        path = base_path / file_ts
     try:
         return pd.read_csv(path, header=None, sep="\s+")
     except FileNotFoundError:
diff --git a/tests/unittests/data/components_for_short_term_storage.yml b/tests/unittests/data/components_for_short_term_storage.yml
new file mode 100644
index 00000000..411ba6f6
--- /dev/null
+++ b/tests/unittests/data/components_for_short_term_storage.yml
@@ -0,0 +1,83 @@
+# Copyright (c) 2024, RTE (https://www.rte-france.com)
+#
+# See AUTHORS.txt
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This file is part of the Antares project.
+study:
+  nodes:
+    - id: N
+      model: node
+
+  components:
+    - id: D
+      model: demand
+      parameters:
+        - name: demand
+          type: timeseries
+          timeseries: demand-ts.txt
+    - id: S
+      model: spillage
+      parameters:
+        - name: cost
+          type: constant
+          value: 1
+    - id: U
+      model: unsupplied
+      parameters:
+        - name: cost
+          type: constant
+          value: 10
+    - id: STS1
+      model: short-term-storage
+      parameters:
+        - name: p_max_injection
+          type: constant
+          value: 100
+        - name: p_max_withdrawal
+          type: constant
+          value: 50
+        - name: level_min
+          type: constant
+          value: 0
+        - name: level_max
+          type: constant
+          value: 1000
+        - name: inflows
+          type: constant
+          value: 0
+        - name: efficiency
+          type: constant
+          value: 0.8
+
+
+  connections:
+      - component1: N
+        port_1: injection_port
+        component2: D
+        port_2: injection_port
+
+      - component1: N
+        port_1: injection_port
+        component2: STS1
+        port_2: injection_port
+
+      - component1: N
+        port_1: injection_port
+        component2: U
+        port_2: injection_port
+
+      - component1: N
+        port_1: injection_port
+        component2: S
+        port_2: injection_port
+
+
+
+
+
diff --git a/tests/unittests/data/demand-ts.txt b/tests/unittests/data/demand-ts.txt
new file mode 100644
index 00000000..96bc6ccd
--- /dev/null
+++ b/tests/unittests/data/demand-ts.txt
@@ -0,0 +1,10 @@
+-18.0
+1.6
+1.6
+1.6
+1.6
+1.6
+1.6
+1.6
+1.6
+1.6
\ No newline at end of file
diff --git a/tests/unittests/data/lib.yml b/tests/unittests/data/lib.yml
index 2d4daa9d..2941c9b9 100644
--- a/tests/unittests/data/lib.yml
+++ b/tests/unittests/data/lib.yml
@@ -51,6 +51,39 @@ library:
       binding-constraints:
         - name: balance
           expression:  sum_connections(injection_port.flow) = 0
+    - id: spillage
+      description: A basic spillage model
+      parameters:
+        - name: cost
+          time-dependent: false
+          scenario-dependent: false
+      variables:
+        - name: spillage
+          lower-bound: 0
+      ports:
+        - name: injection_port
+          type: flow
+      port-field-definitions:
+        - port: injection_port
+          field: flow
+          definition: -spillage
+    - id: unsupplied
+      description: A basic unsupplied model
+      parameters:
+        - name: cost
+          time-dependent: false
+          scenario-dependent: false
+      variables:
+        - name: unsupplied_energy
+          lower-bound: 0
+      ports:
+        - name: injection_port
+          type: flow
+      port-field-definitions:
+        - port: injection_port
+          field: flow
+          definition: unsupplied_energy
+
 
     - id: demand
       description: A basic fixed demand model
diff --git a/tests/unittests/study/test_components_parsing.py b/tests/unittests/study/test_components_parsing.py
index d97664e1..2c60152d 100644
--- a/tests/unittests/study/test_components_parsing.py
+++ b/tests/unittests/study/test_components_parsing.py
@@ -1,10 +1,12 @@
 from pathlib import Path
 
+import pandas as pd
 import pytest
 
 from andromede.model.parsing import InputLibrary, parse_yaml_library
 from andromede.model.resolve_library import resolve_library
-from andromede.simulation import TimeBlock, build_problem
+from andromede.simulation import BlockBorderManagement, TimeBlock, build_problem
+from andromede.study import TimeScenarioIndex, TimeScenarioSeriesData
 from andromede.study.parsing import InputComponents, parse_yaml_components
 from andromede.study.resolve_components import (
     build_data_base,
@@ -76,3 +78,67 @@ def test_basic_balance_using_yaml(input_component, input_library) -> None:
     status = problem.solver.Solve()
     assert status == problem.solver.OPTIMAL
     assert problem.solver.Objective().Value() == 3000
+
+
+def generate_data_for_short_term_storage_test(scenarios: int) -> TimeScenarioSeriesData:
+    data = {}
+    horizon = 10
+    efficiency = 0.8
+    for scenario in range(scenarios):
+        for absolute_timestep in range(10):
+            if absolute_timestep == 0:
+                data[TimeScenarioIndex(absolute_timestep, scenario)] = -18
+            else:
+                data[TimeScenarioIndex(absolute_timestep, scenario)] = 2 * efficiency
+
+    values = [value for value in data.values()]
+    data_df = pd.DataFrame(values, columns=["Value"])
+    return TimeScenarioSeriesData(data_df)
+
+
+def test_short_term_storage_base_with_yaml(data_dir: Path) -> None:
+    compo_file = data_dir / "components_for_short_term_storage.yml"
+    lib_file = data_dir / "lib.yml"
+
+    with lib_file.open() as lib:
+        input_library = parse_yaml_library(lib)
+
+    with compo_file.open() as c:
+        components_file = parse_yaml_components(c)
+    library = resolve_library(input_library)
+    components_input = resolve_components_and_cnx(components_file, library)
+    # 18 produced in the 1st time-step, then consumed 2 * efficiency in the rest
+    scenarios = 1
+    horizon = 10
+    time_blocks = [TimeBlock(0, list(range(horizon)))]
+
+    database = build_data_base(components_file)
+    network = build_network(components_input)
+
+    problem = build_problem(
+        network,
+        database,
+        time_blocks[0],
+        scenarios,
+        border_management=BlockBorderManagement.CYCLE,
+    )
+    status = problem.solver.Solve()
+
+    assert status == problem.solver.OPTIMAL
+
+    # The short-term storage should satisfy the load
+    # No spillage / unsupplied energy is expected
+    assert problem.solver.Objective().Value() == 0
+
+    count_variables = 0
+    for variable in problem.solver.variables():
+        if "injection" in variable.name():
+            count_variables += 1
+            assert 0 <= variable.solution_value() <= 100
+        elif "withdrawal" in variable.name():
+            count_variables += 1
+            assert 0 <= variable.solution_value() <= 50
+        elif "level" in variable.name():
+            count_variables += 1
+            assert 0 <= variable.solution_value() <= 1000
+    assert count_variables == 3 * horizon