From 51af4d4f1911954ff14e905baf728d2ad47fd747 Mon Sep 17 00:00:00 2001
From: Elias Lecomte <elias.lecomte@gmail.com>
Date: Wed, 7 Jan 2026 14:44:21 +0100
Subject: [PATCH] Savings: add Belgium and update co2 with 2024 data (#26435)

---
 assets/js/components/Savings/co2Reference.ts | 39 ++++++++++----------
 tests/statistics.spec.ts                     | 12 +++---
 2 files changed, 26 insertions(+), 25 deletions(-)

diff --git a/assets/js/components/Savings/co2Reference.ts b/assets/js/components/Savings/co2Reference.ts
index fa342c786..191dbfecc 100644
--- a/assets/js/components/Savings/co2Reference.ts
+++ b/assets/js/components/Savings/co2Reference.ts
@@ -1,26 +1,27 @@
-// Data source: gCO2eq/kWh
+// Data source: gCO2eq/kWh, current data is from 2024.
 const source = "https://ourworldindata.org/grapher/carbon-intensity-electricity?tab=table";
 
 // This is a manual selection of countries. If yours is missing, please add it with data from the source above.
 const regions = [
-  { name: "Australia", co2: 503 },
-  { name: "Austria", co2: 158 },
-  { name: "Canada", co2: 128 },
-  { name: "Czech Republic", co2: 415 },
-  { name: "Denmark", co2: 181 },
-  { name: "Estonia", co2: 464 },
-  { name: "Europe", co2: 278 },
-  { name: "Finland", co2: 131 },
-  { name: "France", co2: 85 },
-  { name: "Germany", co2: 385 },
-  { name: "Netherlands", co2: 356 },
-  { name: "Norway", co2: 29 },
-  { name: "Poland", co2: 635 },
-  { name: "Sweden", co2: 45 },
-  { name: "Switzerland", co2: 46 },
-  { name: "United Kingdom", co2: 257 },
-  { name: "United States", co2: 367 },
-  { name: "World", co2: 436 },
+  { name: "Australia", co2: 552 },
+  { name: "Austria", co2: 103 },
+  { name: "Belgium", co2: 118 },
+  { name: "Canada", co2: 175 },
+  { name: "Czech Republic", co2: 414 },
+  { name: "Denmark", co2: 143 },
+  { name: "Estonia", co2: 341 },
+  { name: "Europe", co2: 284 },
+  { name: "Finland", co2: 72 },
+  { name: "France", co2: 44 },
+  { name: "Germany", co2: 344 },
+  { name: "Netherlands", co2: 253 },
+  { name: "Norway", co2: 31 },
+  { name: "Poland", co2: 615 },
+  { name: "Sweden", co2: 36 },
+  { name: "Switzerland", co2: 37 },
+  { name: "United Kingdom", co2: 211 },
+  { name: "United States", co2: 384 },
+  { name: "World", co2: 473 },
 ];
 
 export default { regions, source };
diff --git a/tests/statistics.spec.ts b/tests/statistics.spec.ts
index 1d0a5b09c..115bf078a 100644
--- a/tests/statistics.spec.ts
+++ b/tests/statistics.spec.ts
@@ -58,7 +58,7 @@ test.describe("statistics values", async () => {
     await expect(page.getByTestId("savings-tile-price")).toContainText("6 Fr. saved");
 
     await expect(page.getByTestId("savings-tile-co2")).toContainText("8g/kWh");
-    await expect(page.getByTestId("savings-tile-co2")).toContainText("19 kg saved");
+    await expect(page.getByTestId("savings-tile-co2")).toContainText("17 kg saved");
   });
 
   test("last 365 days", async ({ page }) => {
@@ -78,7 +78,7 @@ test.describe("statistics values", async () => {
     await expect(page.getByTestId("savings-tile-price")).toContainText("6 Fr. saved");
 
     await expect(page.getByTestId("savings-tile-co2")).toContainText("14g/kWh");
-    await expect(page.getByTestId("savings-tile-co2")).toContainText("37 kg saved");
+    await expect(page.getByTestId("savings-tile-co2")).toContainText("33 kg saved");
   });
 
   test("reference data", async ({ page }) => {
@@ -88,19 +88,19 @@ test.describe("statistics values", async () => {
 
     await expect(page.getByTestId("savings-reference")).toContainText("Reference data:");
     await expect(page.getByTestId("savings-reference")).toContainText("30.0 rp/kWh (grid)");
-    await expect(page.getByTestId("savings-reference")).toContainText("⌀ 385 g/kWh");
+    await expect(page.getByTestId("savings-reference")).toContainText("⌀ 344 g/kWh");
     await expect(page.getByTestId("savings-reference")).toContainText("Germany");
 
-    await expect(page.getByTestId("savings-tile-co2")).toContainText("19 kg saved");
+    await expect(page.getByTestId("savings-tile-co2")).toContainText("17 kg saved");
 
     await page
       .getByTestId("savings-region-select")
       .getByRole("combobox")
       .selectOption("Switzerland");
 
-    await expect(page.getByTestId("savings-reference")).toContainText("⌀ 46 g/kWh");
+    await expect(page.getByTestId("savings-reference")).toContainText("⌀ 37 g/kWh");
     await expect(page.getByTestId("savings-reference")).toContainText("Switzerland");
 
-    await expect(page.getByTestId("savings-tile-co2")).toContainText("2 kg saved");
+    await expect(page.getByTestId("savings-tile-co2")).toContainText("1 kg saved");
   });
 });