diff --git a/src/asim/configs/resident/vehicle_type_choice_op4.csv b/src/asim/configs/resident/vehicle_type_choice_op4.csv
index df69f47c3..58e611790 100644
--- a/src/asim/configs/resident/vehicle_type_choice_op4.csv
+++ b/src/asim/configs/resident/vehicle_type_choice_op4.csv
@@ -149,4 +149,9 @@ util_san_pu,San Diego - Pickup,"@(df.SAN) & (df.body_type_num_coded==3)",coef_sa
 util_san_mc,San Diego - Motorcycle,"@(df.SAN) & (df.body_type_num_coded==2)",coef_san_mc
 util_san_hyb,San Diego - Hybrid,"@(df.SAN) & (df.fuel_type_num_coded==4)",coef_san_hyb
 util_san_ev,San Diego - Electric,"@(df.SAN) & ((df.fuel_type_num_coded==5) | (df.fuel_type_num_coded==1))",coef_san_ev
-util_san_age,San Diego - Age,"@(df.SAN) * df.age",coef_san_age
\ No newline at end of file
+util_san_age,San Diego - Age,"@(df.SAN) * df.age",coef_san_age
+#,EV calibration constants,,
+util_calib_pev_2035,PEV and scenario year between 2035 and 2050,(fuel_type_num_coded==1) & (scenarioYear >= 2035) & (scenarioYear < 2050),coef_calib_pev_2035
+util_calib_bev_2035,BEV and scenario year between 2035 and 2050,(fuel_type_num_coded==5) & (scenarioYear >= 2035) & (scenarioYear < 2050),coef_calib_bev_2035
+util_calib_pev_2050,PEV and scenario year after 2050,(fuel_type_num_coded==1) & (scenarioYear >= 2050),coef_calib_pev_2050
+util_calib_bev_2050,BEV and scenario year after 2050,(fuel_type_num_coded==5) & (scenarioYear >= 2050),coef_calib_bev_2050
\ No newline at end of file
diff --git a/src/asim/configs/resident/vehicle_type_choice_op4_coefficients.csv b/src/asim/configs/resident/vehicle_type_choice_op4_coefficients.csv
index d2fdf4623..d57c6373c 100644
--- a/src/asim/configs/resident/vehicle_type_choice_op4_coefficients.csv
+++ b/src/asim/configs/resident/vehicle_type_choice_op4_coefficients.csv
@@ -188,3 +188,7 @@ coef_ohio_mc,0.140,F
 coef_ohio_hyb,-0.142,F
 coef_ohio_ev,-1.590,F
 coef_ohio_age,-0.008,F
+coef_calib_pev_2035,0.0,F
+coef_calib_bev_2035,0.0,F
+coef_calib_pev_2050,0.0,F
+coef_calib_bev_2050,0.0,F
\ No newline at end of file