diff --git a/gridfm_datakit/perturbations/load_perturbation.py b/gridfm_datakit/perturbations/load_perturbation.py
index 0d2b2e335..e151d94dd 100644
--- a/gridfm_datakit/perturbations/load_perturbation.py
+++ b/gridfm_datakit/perturbations/load_perturbation.py
@@ -567,6 +567,101 @@ def __call__(
 
         return load_profiles
 
+class PrecomputedProfile(LoadScenarioGeneratorBase):
+    """Reads precomputed bus-demand scenarios and returns them as (n_buses, n_scenarios, 2).
+
+    CSV/XLSX columns:
+      - load_scenario : int scenario index (0..S-1)
+      - load          : int BUS INDEX (0..n_buses-1) in *continuous indexing* used by Network
+                        (i.e., after mapping to 0..n_buses-1)
+      - p_mw, q_mvar  : floats
+    """
+
+    def __init__(self, scenario_file: str):
+        self.scenario_file = scenario_file
+
+    def _read(self) -> pd.DataFrame:
+        p = self.scenario_file
+        if p.lower().endswith((".xlsx", ".xls")):
+            return pd.read_excel(p)
+        return pd.read_csv(p)
+
+    def __call__(
+        self,
+        net,  # type: Network
+        n_scenarios: int,
+        scenario_log: str,
+        max_iter: int,  # unused, kept for interface compatibility
+        seed: int,
+    ) -> np.ndarray:
+        df = self._read()
+
+        required = {"load_scenario", "load", "p_mw", "q_mvar"}
+        missing = required - set(df.columns)
+        if missing:
+            raise ValueError(
+                f"Scenario file must contain columns {sorted(required)}; missing {sorted(missing)}. "
+                f"Got {list(df.columns)}"
+            )
+
+        df["load_scenario"] = df["load_scenario"].astype(int)
+        df["load"] = df["load"].astype(int)
+
+        n_buses = int(np.asarray(net.buses).shape[0])
+
+        # Scenario index validation (0..n_scenarios-1)
+        min_scenario = int(df["load_scenario"].min())
+        max_scenario = int(df["load_scenario"].max())
+        if min_scenario < 0 or max_scenario >= n_scenarios:
+            raise ValueError(
+                "Scenario file contains out-of-range scenario indices in column 'load_scenario'. "
+                f"Expected 0..{n_scenarios - 1}, got min={min_scenario}, max={max_scenario}."
+            )
+
+        # Bus index validation (continuous indices 0..n_buses-1)
+        min_bus = int(df["load"].min())
+        max_bus = int(df["load"].max())
+        if min_bus < 0 or max_bus >= n_buses:
+            raise ValueError(
+                "Scenario file contains out-of-range bus indices in column 'load'. "
+                f"Expected 0..{n_buses - 1}, got min={min_bus}, max={max_bus}."
+            )
+
+        # uniqueness of (load_scenario, load) pairs
+        dup_mask = df.duplicated(subset=["load_scenario", "load"])
+        if dup_mask.any():
+            dup_count = int(dup_mask.sum())
+            raise ValueError(
+                f"Scenario file contains {dup_count} duplicate (load_scenario, load) pairs. "
+                "Each pair must be unique."
+            )
+
+        # check: require all scenario-bus pairs present
+        expected = n_buses * n_scenarios
+        actual = len(df)
+        if actual != expected:
+            raise ValueError(
+                f"Scenario file must contain exactly {expected} rows "
+                f"({n_buses} buses x {n_scenarios} scenarios); got {actual}."
+            )
+
+        # Allocate output: (n_buses, n_scenarios, 2)
+        out = np.zeros((n_buses, n_scenarios, 2), dtype=float)
+
+        s = df["load_scenario"].to_numpy(dtype=int)
+        b = df["load"].to_numpy(dtype=int)
+        out[b, s, 0] = df["p_mw"].to_numpy(dtype=float)
+        out[b, s, 1] = df["q_mvar"].to_numpy(dtype=float)
+
+        if scenario_log:
+            with open(scenario_log, "a") as f:
+                f.write(
+                    f"precomputed_profile: scenarios={n_scenarios}, buses={n_buses}, "
+                    f"path={self.scenario_file}\n"
+                )
+
+        return out
+
 
 if __name__ == "__main__":
     """
diff --git a/gridfm_datakit/utils/param_handler.py b/gridfm_datakit/utils/param_handler.py
index cd1fca724..a275e0041 100644
--- a/gridfm_datakit/utils/param_handler.py
+++ b/gridfm_datakit/utils/param_handler.py
@@ -3,6 +3,7 @@
     LoadScenarioGeneratorBase,
     LoadScenariosFromAggProfile,
     Powergraph,
+    PrecomputedProfile,
 )
 from typing import Dict, Any
 import warnings
@@ -173,6 +174,7 @@ def get_load_scenario_generator(args: NestedNamespace) -> LoadScenarioGeneratorB
     Note:
         Currently supports 'agg_load_profile' and 'powergraph' generator types.
     """
+    print("args.generator: ", args.generator)
     if args.generator == "agg_load_profile":
         return LoadScenariosFromAggProfile(
             args.agg_profile,
@@ -194,8 +196,11 @@ def get_load_scenario_generator(args: NestedNamespace) -> LoadScenarioGeneratorB
                 f"The following arguments are not used by the powergraph generator: {unused_args}",
                 UserWarning,
             )
+    
 
-        return Powergraph(args.agg_profile)
+    if args.generator == "precomputed_profile":
+        print("precomputed_profile being used")
+        return PrecomputedProfile(args.scenario_file)
 
 
 def initialize_topology_generator(