From 5098bf86f4f67a0e2aac2ac318bfb16a5a5df576 Mon Sep 17 00:00:00 2001
From: Manohar Gupta <manohar@manohargupta.com>
Date: Fri, 22 May 2026 16:57:29 +0530
Subject: [PATCH] Fix Total Project Cost calculation: include upfront lease
 cost

- Added upfrontLeaseCostCr to totalCostCr calculation
- IDC and upfront fee now calculated on full project cost including lease
- Updated Land & Common card to show lease cost is included in total
---
 packages/web/components/InputsTab.tsx | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/packages/web/components/InputsTab.tsx b/packages/web/components/InputsTab.tsx
index 2d2119f..ccbb284 100644
--- a/packages/web/components/InputsTab.tsx
+++ b/packages/web/components/InputsTab.tsx
@@ -683,7 +683,13 @@ export function InputsTab({ scenarioId, inputsJson, onSaved }: Props) {
   const solarTotalCr = computeCostWithTax(costItems, "SolarOnly");
   const windTotalCr = computeCostWithTax(costItems, "WindOnly");
   const bessTotalCr = computeCostWithTax(costItems, "BESSOnly");
-  const totalCostCr = solarTotalCr + windTotalCr + bessTotalCr;
+  
+  // Calculate upfront lease cost based on user inputs (acres * rate * years)
+  const leaseRate = gv(inputs, "project", "land_lease_rate", 0.4);
+  const leaseYears = gv(inputs, "project", "land_lease_years", 5);
+  const upfrontLeaseCostCr = effectiveLandAcres * leaseRate * leaseYears;
+  
+  const totalCostCr = solarTotalCr + windTotalCr + bessTotalCr + upfrontLeaseCostCr;
 
   // COD sync helper
   function handlePlantCodChange(v: string) {
@@ -967,7 +973,7 @@ export function InputsTab({ scenarioId, inputsJson, onSaved }: Props) {
         </div>
       </ToggleCard>
 
-      {/* ── Land & Common ────────────────────────────────────── */}
+        {/* ── Land & Common ────────────────────────────────────── */}
       <CollapsibleCard title="Land & Common Costs" cols={3}>
         <NumField
           label="Total Land Area"
@@ -981,7 +987,7 @@ export function InputsTab({ scenarioId, inputsJson, onSaved }: Props) {
         <NumField
           label="Lease Rate"
           sub="Lakh/acre/year"
-          value={gv(inputs, "project", "land_lease_rate", 0.4)}
+          value={leaseRate}
           onChange={(v) => upd("project", "land_lease_rate", v)}
           step={0.05}
           min={0}
@@ -990,7 +996,7 @@ export function InputsTab({ scenarioId, inputsJson, onSaved }: Props) {
         <NumField
           label="Lease Years"
           sub="3, 5, 10 or custom"
-          value={gv(inputs, "project", "land_lease_years", 5)}
+          value={leaseYears}
           onChange={(v) => upd("project", "land_lease_years", v)}
           step={1}
           min={1}
@@ -998,7 +1004,7 @@ export function InputsTab({ scenarioId, inputsJson, onSaved }: Props) {
           suffix="yr"
         />
         <div className="col-span-3 text-[10px] text-muted-foreground py-1">
-           Upfront Lease Cost: <span className="font-medium text-foreground">{effectiveLandAcres * (gv(inputs, "project", "land_lease_rate", 0.4) || 0) * (gv(inputs, "project", "land_lease_years", 5) || 0)} Cr</span>
+           Upfront Lease Cost (included in Total Project Cost): <span className="font-medium text-foreground">{upfrontLeaseCostCr.toFixed(2)} Cr</span>
         </div>
       </CollapsibleCard>