diff --git a/packages/engine/src/remodel_engine/scenarios/runner.py b/packages/engine/src/remodel_engine/scenarios/runner.py
index 9839774..45be3c6 100644
--- a/packages/engine/src/remodel_engine/scenarios/runner.py
+++ b/packages/engine/src/remodel_engine/scenarios/runner.py
@@ -488,8 +488,8 @@ def run_scenario(inputs: ScenarioInput) -> ScenarioResult:
     if client_load_mw is None:
         client_load_mw = inputs.commercial.ppa_capacity_mw
 
-    # Transmission loss factor for client_end
-    loss_factor = 1.0 - inputs.commercial.transmission_loss_pct - inputs.commercial.dsm_loss_pct
+    # Transmission + aux loss factor for client_end
+    loss_factor = 1.0 - inputs.commercial.aux_consumption_pct - inputs.commercial.transmission_loss_pct - inputs.commercial.dsm_loss_pct
 
     # Generate hourly data: 25 years × 8760 hours = 219,000 rows
     # Start from Apr 1 of cod_year