diff --git a/app/data/gasBillRepo.test.ts b/app/data/gasBillRepo.test.ts
index ad31ba66..c75576de 100644
--- a/app/data/gasBillRepo.test.ts
+++ b/app/data/gasBillRepo.test.ts
@@ -18,14 +18,14 @@ describe("gasBillRepo", () => {
     const mockGasBill = 150; // Example gas bill amount
 
     (prisma.gasBills.findFirstOrThrow as jest.Mock).mockResolvedValueOnce({
-      bill: mockGasBill,
+      kwhCostPence: mockGasBill,
     });
 
     const result = await gasBillRepo.getGasBillByITL3(itl);
     expect(result).toBe(mockGasBill);
     expect(prisma.gasBills.findFirstOrThrow).toHaveBeenCalledWith({
-      where: { itl: { startsWith: itl.substring(0, 3) } },
-      select: { bill: true },
+      where: { itl1: { startsWith: itl.substring(0, 3) } },
+      select: { kwhCostPence: true },
     });
   });
 
diff --git a/app/data/gasBillRepo.ts b/app/data/gasBillRepo.ts
index 08253d54..2805d1c3 100644
--- a/app/data/gasBillRepo.ts
+++ b/app/data/gasBillRepo.ts
@@ -2,14 +2,14 @@ import prisma from "./db";
 
 const getGasBillByITL3 = async (itl: string): Promise<number> => {
     try {
-        const { bill } = await prisma.gasBills.findFirstOrThrow({
+        const { kwhCostPence } = await prisma.gasBills.findFirstOrThrow({
             where: {
-                itl: { startsWith: itl.substring(0, 3) },
+                itl1: { startsWith: itl.substring(0, 3) },
             },
-            select: { bill: true },
+            select: { kwhCostPence: true },
         });
 
-        return bill as number;
+        return kwhCostPence;
     } catch (error) {
         throw Error(`Data error: Unable to find gas_bills_2020 for itl3 ${itl}`);
     }
diff --git a/prisma/migrations/20241211152923_rename_gasbills_column/migration.sql b/prisma/migrations/20241211152923_rename_gasbills_column/migration.sql
new file mode 100644
index 00000000..390c9e34
--- /dev/null
+++ b/prisma/migrations/20241211152923_rename_gasbills_column/migration.sql
@@ -0,0 +1,6 @@
+-- AlterTable
+ALTER TABLE "gas_bills" RENAME COLUMN "bill" TO "kwh_cost_pence";
+ALTER TABLE "gas_bills" RENAME COLUMN "itl" TO "itl1";
+ALTER TABLE "gas_bills" RENAME COLUMN "Region" TO "region";
+ALTER TABLE "gas_bills" ALTER COLUMN "kwh_cost_pence" SET NOT NULL;
+ALTER TABLE "gas_bills" ALTER COLUMN "itl1" SET NOT NULL;
\ No newline at end of file
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 86e4c558..3b8d4669 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -90,9 +90,9 @@ model SocialRent {
 
 model GasBills {
   id     Int    @id
-  region String @map("Region") @db.VarChar
-  itl    String @db.VarChar
-  bill   Float
+  region String @map("region") @db.VarChar
+  itl1    String @db.VarChar
+  kwhCostPence   Float @map("kwh_cost_pence")
 
   @@map("gas_bills")
 }