fix: fix the startcost translation calculation

Author: mcllerena

packages/r2x-reeds-to-plexos/src/r2x_reeds_to_plexos/getters.py

@@ -674,7 +674,8 @@ def gen_startup_cost(component: ReEDSGenerator, context: PluginContext) -> Resul
         return Ok(float(startup_cost))
     technology = getattr(component, "technology", "")
     default_startup_cost = _get_defaults(technology, "start_cost_per_MW")
-    return Ok(float(default_startup_cost))
+    capacity = getattr(component, "capacity", 0.0)
+    return Ok(float(default_startup_cost) * float(capacity))
 
 
 @getter

packages/r2x-reeds-to-plexos/tests/test_getters.py

@@ -239,6 +239,14 @@ def test_basic_getters_return_values(tmp_path):
     )
 
 
+def test_gen_startup_cost_scales_default_per_mw_cost_by_capacity(tmp_path, monkeypatch):
+    context = make_context(tmp_path)
+    objs = setup_systems(context)
+    monkeypatch.setattr(getters, "_get_defaults", lambda *_args, **_kwargs: 5.3)
+
+    assert getters.gen_startup_cost(objs["thermal"], context).unwrap() == 265.0
+
+
 def test_get_load_participation_factor(tmp_path):
     """get_load_participation_factor always returns 1.0.