diff --git a/orchestration/modelling_orchestrator.py b/orchestration/modelling_orchestrator.py
index 5a50c12c9..111023694 100644
--- a/orchestration/modelling_orchestrator.py
+++ b/orchestration/modelling_orchestrator.py
@@ -182,7 +182,7 @@ class ModellingOrchestrator:
         # The Optimiser speaks the goal's currency (ADR-0062): group signals,
         # dependency pricing and repair marginals are all measured by this
         # objective — SAP by default, carbon reduction for a Reducing-CO2 goal.
-        objective: Callable[[Score], float] = _objective_for(scenario)
+        objective: Callable[[Score], float] = _objective_for(scenario, bill_derivation)
         groups: list[list[ScoredOption]] = _scored_candidate_groups(
             scorer,
             effective_epc,
@@ -443,12 +443,28 @@ def _carbon_reduction(score: Score) -> float:
     return -score.co2_kg_per_yr
 
 
-def _objective_for(scenario: Scenario) -> Callable[[Score], float]:
+def _bill_saving(bill_derivation: BillDerivation) -> Callable[[Score], float]:
+    """The Energy-Savings objective: the annual Bill at the current Fuel Rates
+    snapshot, negated so higher is better (a saved £ scores +1). Priced at the
+    live snapshot, not SAP's internal tariff book — that difference is the
+    point of the goal (ADR-0062)."""
+
+    def objective(score: Score) -> float:
+        return -_bill_for(bill_derivation, score).total_gbp
+
+    return objective
+
+
+def _objective_for(
+    scenario: Scenario, bill_derivation: BillDerivation
+) -> Callable[[Score], float]:
     """The metric the Scenario's goal maximises (ADR-0062), as an Optimiser
     objective (higher is better). Goals without an aligned metric optimise
     SAP, as every goal did before."""
     if scenario.goal == _REDUCING_CO2_GOAL:
         return _carbon_reduction
+    if scenario.goal == _ENERGY_SAVINGS_GOAL:
+        return _bill_saving(bill_derivation)
     return sap_rating