From 4149d67faf5e104f1d2e80bb74dad5aab57ab9b0 Mon Sep 17 00:00:00 2001
From: Michael Geers <michael@geers.tv>
Date: Wed, 10 Jun 2026 14:03:20 +0200
Subject: [PATCH] History UI: fix consumption with no ext/aux meters (#30697)

---
 assets/js/views/History.vue  |  5 +++--
 tests/energy-history.spec.ts | 11 +++++++++++
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/assets/js/views/History.vue b/assets/js/views/History.vue
index 15a92c990..5d7be6722 100644
--- a/assets/js/views/History.vue
+++ b/assets/js/views/History.vue
@@ -282,7 +282,7 @@ export default defineComponent({
 				const activeMeters = meters
 					.map((s, i) => ({ ...s, paletteIndex: i }))
 					.filter(hasEnergy);
-				if (!home || activeMeters.length === 0) return activeMeters;
+				if (!home) return activeMeters;
 				const meterTotals = new Map<string, number>();
 				// Net per slot is computed from all meters (incl. inactive ones), so
 				// dropping inactive entries from the display doesn't shift the
@@ -394,7 +394,8 @@ export default defineComponent({
 		hasEntityLegend(group: string): boolean {
 			const list = this.displaySeries(group);
 			if (!list.length) return false;
-			if (group === "loadpoint" || group === "meter") return true;
+			// Without explicit consumers an "Others"-only legend is meaningless.
+			if (group === "loadpoint" || group === "meter") return list.some((s) => !s.virtual);
 			if (group === "pv" || group === "battery") return list.length > 1;
 			return false;
 		},
diff --git a/tests/energy-history.spec.ts b/tests/energy-history.spec.ts
index d4a48f2a8..c728b30b3 100644
--- a/tests/energy-history.spec.ts
+++ b/tests/energy-history.spec.ts
@@ -190,6 +190,17 @@ test.describe("consumption breakdown", () => {
     await expect(consumption.getByRole("button", { name: "Office 300 Wh" })).toBeVisible();
   });
 
+  // 2026-03-24: home = 0.4 kWh, no meter entities with data.
+  test("home without meters shows chart without legend", async ({ page }) => {
+    await gotoDay(page, 2026, 3, 24);
+    const consumption = section(page, "meter");
+    await expect(consumption).toBeVisible();
+
+    await expect(consumption.getByRole("heading")).toContainText("0.4 kWh");
+    // No explicit consumers, no entity legend.
+    await expect(consumption.getByRole("button")).toHaveCount(0);
+  });
+
   test("entity focus rescales axis and resets on unfocus", async ({ page }) => {
     await gotoDay(page, 2026, 4, 7);
     const consumption = section(page, "meter");