diff --git a/src/services_models/agc.jl b/src/services_models/agc.jl
index 5437cae..b51b71b 100644
--- a/src/services_models/agc.jl
+++ b/src/services_models/agc.jl
@@ -266,7 +266,7 @@ function objective_function!(
     agcs::IS.FlattenIteratorWrapper{T},
     ::ServiceModel{<:PSY.AGC, U},
 ) where {T <: PSY.AGC, U <: PIDSmoothACE}
-    add_proportional_cost!(container, LiftVariable(), agcs, U())
+    add_service_proportional_cost!(container, LiftVariable(), agcs, U())
     return
 end
 
@@ -295,7 +295,7 @@ function add_feedforward_constraints!(
     return
 end
 
-function add_proportional_cost!(
+function add_service_proportional_cost!(
     container::OptimizationContainer,
     ::U,
     agcs::IS.FlattenIteratorWrapper{T},
diff --git a/src/services_models/reserves.jl b/src/services_models/reserves.jl
index f8828b8..3ba60bb 100644
--- a/src/services_models/reserves.jl
+++ b/src/services_models/reserves.jl
@@ -301,7 +301,7 @@ function objective_function!(
     service::SR,
     ::ServiceModel{SR, T},
 ) where {SR <: PSY.AbstractReserve, T <: AbstractReservesFormulation}
-    add_proportional_cost!(container, ActivePowerReserveVariable(), service, T())
+    add_reserves_proportional_cost!(container, ActivePowerReserveVariable(), service, T())
     return
 end
 
@@ -517,11 +517,11 @@ function add_variable_cost!(
     service::T,
     ::V,
 ) where {T <: PSY.ReserveDemandCurve, U <: VariableType, V <: StepwiseCostReserve}
-    _add_variable_cost_to_objective!(container, U(), service, V())
+    _add_reserves_variable_cost_to_objective!(container, U(), service, V())
     return
 end
 
-function _add_variable_cost_to_objective!(
+function _add_reserves_variable_cost_to_objective!(
     container::OptimizationContainer,
     ::T,
     component::PSY.Reserve,
@@ -555,7 +555,7 @@ function _add_variable_cost_to_objective!(
     return
 end
 
-function add_proportional_cost!(
+function add_reserves_proportional_cost!(
     container::OptimizationContainer,
     ::U,
     service::T,