diff --git a/src/modules/plant/run2.py b/src/modules/plant/run2.py
index f61c645..cb95529 100644
--- a/src/modules/plant/run2.py
+++ b/src/modules/plant/run2.py
@@ -501,7 +501,7 @@ def main():
             calc4_free_cash_flow_on_equity_array.append(calc4_free_cash_flow_on_equity)
             calc4_discounted_fcf_on_equity = hitung_pv(wacc_on_equity, seq, calc4_free_cash_flow_on_equity)
 
-            cost_disposal_cost = -npf.pmt(discount_rate, seq, cost_a_acquisition)
+            cost_disposal_cost = -npf.pmt(discount_rate, seq, cost_a_acquisition) if seq > 0 else 0
 
             row_params = (
                 net_capacity_factor,