diff --git a/api/s23_options_util.py b/api/s23_options_util.py
index 79cb7e4..5a7a4be 100644
--- a/api/s23_options_util.py
+++ b/api/s23_options_util.py
@@ -390,7 +390,10 @@ def generate_v3(cs: ChangeSet) -> ChangeSet:
                 if tokens[0].upper() == OPTION_QUALITY_TRACE and len(tokens) >= 2:
                     cs_v3 |= { 'TRACE_NODE' : tokens[1] }
             elif key == 'DEMAND MODEL':
-                cs_v3 |= { map[key] : OPTION_V3_DEMAND_MODEL_POWER }
+                if op[key] == OPTION_DEMAND_MODEL_DDA:
+                    cs_v3 |= { map[key] : OPTION_V3_DEMAND_MODEL_FIXED }
+                else:
+                    cs_v3 |= { map[key] : OPTION_V3_DEMAND_MODEL_POWER }
 
     if len(cs_v3) > 0:
         cs_v3 |= g_update_prefix | { 'type' : 'option_v3' }