diff --git a/app/src/app/api/v0/inventory/[inventory]/cdp/route.ts b/app/src/app/api/v0/inventory/[inventory]/cdp/route.ts
index 96f866339..f8d61b699 100644
--- a/app/src/app/api/v0/inventory/[inventory]/cdp/route.ts
+++ b/app/src/app/api/v0/inventory/[inventory]/cdp/route.ts
@@ -5,6 +5,9 @@ import { logger } from "@/services/logger";
 import { apiHandler } from "@/util/api";
 import { NextResponse } from "next/server";
 import { Inventory } from "@/models/Inventory";
+import { InventoryValue } from "@/models/InventoryValue";
+import { db } from "@/models";
+import { Op } from "sequelize";
 
 const EMISSIONS_SECTION = 3;
 const EMISSIONS_INVENTORY_QUESTION = 0;
@@ -16,60 +19,81 @@ function findRow(rows: any[], regex: RegExp): string|null {
   return row ? row.id : null;
 }
 
-function totalScope1ExcludingGeneration(inventory: Inventory): number {
-  return 0.0;
+async function getTotalByRefnos(inventory: Inventory, refNos: string[]): Promise<bigint> {
+
+  let total:bigint = 0n;
+
+  const values = await db.models.InventoryValue.findAll({
+    where:
+      {
+        inventoryId: inventory.inventoryId,
+        gpcReferenceNumber: { [Op.in]: refNos }
+      }
+  });
+
+  for (const value of values) {
+    total += (value.co2eq ?? 0n);
+  }
+
+  return total;
+}
+
+async function totalScope1ExcludingGeneration(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function scope1FromGeneration(inventory: Inventory): number {
-  return 0.0;
+async function scope1FromGeneration(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalScope2(inventory: Inventory): number {
-  return 0.0;
+async function totalScope2(inventory: Inventory): Promise<bigint> {
+  return await getTotalByRefnos(inventory, [
+    "I.1.2", "I.2.2", "I.3.2", "I.4.2", "I.5.2", "I.6.2",
+    "II.1.2", "II.2.2", "II.3.2", "II.4.2", "II.5.2"])
 }
 
-function totalScope3(inventory: Inventory): number {
-  return 0.0;
+async function totalScope3(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalStationaryScope1(inventory: Inventory): number {
-  return 0.0;
+async function totalStationaryScope1(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalStationaryScope2(inventory: Inventory): number {
-  return 0.0;
+async function totalStationaryScope2(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalStationaryScope3(inventory: Inventory): number {
-  return 0.0;
+async function totalStationaryScope3(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalTransportationScope1(inventory: Inventory): number {
-  return 0.0;
+async function totalTransportationScope1(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalTransportationScope2(inventory: Inventory): number {
-  return 0.0;
+async function totalTransportationScope2(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalTransportationScope3(inventory: Inventory): number {
-  return 0.0;
+async function totalTransportationScope3(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalWasteWithinScope1(inventory: Inventory): number {
-  return 0.0;
+async function totalWasteWithinScope1(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalWasteWithinScope3(inventory: Inventory): number {
-  return 0.0;
+async function totalWasteWithinScope3(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalWasteOutsideScope1(inventory: Inventory): number {
-  return 0.0;
+async function totalWasteOutsideScope1(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
-function totalBasic(inventory: Inventory): number {
-  return 0.0;
+async function totalBasic(inventory: Inventory): Promise<bigint> {
+  return 0n;
 }
 
 export const POST = apiHandler(async (_req, { session, params }) => {
@@ -134,33 +158,33 @@ export const POST = apiHandler(async (_req, { session, params }) => {
 
     const rows = [
       { rowId: findRow(matrix.rows, /Total scope 1 emissions.*excluding/),
-        content: totalScope1ExcludingGeneration(inventory) },
+        content: await totalScope1ExcludingGeneration(inventory) },
       { rowId: findRow(matrix.rows, /[Ss]cope 1 emissions.*from generation/),
-        content: scope1FromGeneration(inventory) },
+        content: await scope1FromGeneration(inventory) },
       { rowId: findRow(matrix.rows, /Total scope 2 emissions/),
-        content: totalScope2(inventory) },
+        content: await totalScope2(inventory) },
       { rowId: findRow(matrix.rows, /Total scope 3 emissions/),
-        content: totalScope3(inventory) },
+        content: await totalScope3(inventory) },
       { rowId: findRow(matrix.rows, /Stationary Energy.*scope 1/),
-        content: totalStationaryScope1(inventory) },
+        content: await totalStationaryScope1(inventory) },
       { rowId: findRow(matrix.rows, /Stationary Energy.*scope 2/),
-        content: totalStationaryScope2(inventory) },
+        content: await totalStationaryScope2(inventory) },
       { rowId: findRow(matrix.rows, /Stationary Energy.*scope 3/),
-        content: totalStationaryScope3(inventory) },
+        content: await totalStationaryScope3(inventory) },
       { rowId: findRow(matrix.rows, /Transportation.*scope 1/),
-        content: totalTransportationScope1(inventory) },
+        content: await totalTransportationScope1(inventory) },
       { rowId: findRow(matrix.rows, /Transportation.*scope 2/),
-        content: totalTransportationScope2(inventory) },
+        content: await totalTransportationScope2(inventory) },
       { rowId: findRow(matrix.rows, /Transportation.*scope 3/),
-        content: totalTransportationScope3(inventory) },
+        content: await totalTransportationScope3(inventory) },
       { rowId: findRow(matrix.rows, /Waste.*within.*scope 1/),
-        content: totalWasteWithinScope1(inventory) },
+        content: await totalWasteWithinScope1(inventory) },
       { rowId: findRow(matrix.rows, /Waste.*within.*scope 3/),
-        content: totalWasteWithinScope3(inventory) },
+        content: await totalWasteWithinScope3(inventory) },
       { rowId: findRow(matrix.rows, /Waste.*outside.*scope 1/),
-        content: totalWasteOutsideScope1(inventory) },
+        content: await totalWasteOutsideScope1(inventory) },
       { rowId: findRow(matrix.rows, /TOTAL BASIC emissions/),
-        content: totalBasic(inventory) },
+        content: await totalBasic(inventory) },
     ]
 
     try {