diff --git a/backend/documents_parser/tests/test_end_to_end.py b/backend/documents_parser/tests/test_end_to_end.py
index 121c004a..0c2369f0 100644
--- a/backend/documents_parser/tests/test_end_to_end.py
+++ b/backend/documents_parser/tests/test_end_to_end.py
@@ -299,3 +299,6 @@ class TestPdfToEpcPropertyDataFixture3:
     def test_photovoltaic_supply_percent_roof(self, result: EpcPropertyData) -> None:
         assert result.sap_energy_source.photovoltaic_supply is not None
         assert result.sap_energy_source.photovoltaic_supply.none_or_no_details.percent_roof_area == 45
+
+    def test_electric_storage_heater_fuel_type(self, result: EpcPropertyData) -> None:
+        assert result.sap_heating.main_heating_details[0].main_fuel_type == "Electricity"