diff --git a/tests/domain/scenario_export/test_scenario_sheet.py b/tests/domain/scenario_export/test_scenario_sheet.py
index e21e633a2..54d35e37e 100644
--- a/tests/domain/scenario_export/test_scenario_sheet.py
+++ b/tests/domain/scenario_export/test_scenario_sheet.py
@@ -142,3 +142,26 @@ def test_total_retrofit_cost_sums_the_per_measure_costs() -> None:
 
     # assert — the package total is the sum of the measure costs.
     assert sheet.rows[0]["total_retrofit_cost"] == 2000.0
+
+
+def test_solar_pv_with_a_battery_pivots_to_its_own_battery_column() -> None:
+    # arrange — a solar_pv Option that includes a battery.
+    prop = _property(
+        measures=[
+            _measure(
+                measure_type="solar_pv", estimated_cost=6000.0, includes_battery=True
+            )
+        ]
+    )
+
+    # act
+    sheet = shape_scenario_sheet([prop])
+
+    # assert — the cost lands in the battery variant column (a stable part of the
+    # contract), the plain solar_pv column stays blank, and the total still
+    # counts it.
+    assert "solar_pv_with_battery" in sheet.columns
+    row = sheet.rows[0]
+    assert row["solar_pv_with_battery"] == 6000.0
+    assert row["solar_pv"] == ""
+    assert row["total_retrofit_cost"] == 6000.0