diff --git a/exports/energy_systems/__init__.py b/exports/energy_systems/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/exports/energy_systems/heat_pump_export.py b/exports/energy_systems/heat_pump_export.py
new file mode 100644
index 00000000..e69de29b
diff --git a/exports/energy_systems_factory.py b/exports/energy_systems_factory.py
new file mode 100644
index 00000000..e69de29b
diff --git a/requirements.txt b/requirements.txt
index 48d73cf7..95b6e515 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,4 +12,5 @@ xlrd~=2.0.1
 openpyxl~=3.0.7
 networkx~=2.5.1
 parseidf~=1.0.0
-ply~=3.11
\ No newline at end of file
+ply~=3.11
+scipy==1.7.1
\ No newline at end of file