diff --git a/models-design/model_library/stock_final_level.drawio b/models-design/model_library/stock_final_level.drawio
index 64f5ee3d..66d118a2 100644
--- a/models-design/model_library/stock_final_level.drawio
+++ b/models-design/model_library/stock_final_level.drawio
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diff --git a/models-design/systems/EV_load_min.drawio b/models-design/systems/EV_load_min.drawio
new file mode 100644
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diff --git a/models-design/systems/bc_total_import.drawio b/models-design/systems/bc_total_import.drawio
new file mode 100644
index 00000000..a132ce42
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+++ b/models-design/systems/bc_total_import.drawio
@@ -0,0 +1,229 @@
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diff --git a/models-design/systems/nuclear_modulation.drawio b/models-design/systems/nuclear_modulation.drawio
new file mode 100644
index 00000000..131cb569
--- /dev/null
+++ b/models-design/systems/nuclear_modulation.drawio
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\ No newline at end of file