From 33d9c3bddba1744eee9a7716f47f6bc3b375c36d Mon Sep 17 00:00:00 2001
From: andig <andi@evcc.io>
Date: Mon, 15 Jun 2026 09:55:30 +0200
Subject: [PATCH] EEBus: treat unavailable measurement data as not available
 (#30874)

---
 meter/eebus.go | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/meter/eebus.go b/meter/eebus.go
index 383951c7b..f06a6ec0e 100644
--- a/meter/eebus.go
+++ b/meter/eebus.go
@@ -154,8 +154,10 @@ func eebusReadValue[T any](uc eebusapi.UseCaseBaseInterface, entity spineapi.Ent
 
 	res, err := update(entity)
 	if err != nil {
-		// announced but not provided
-		if errors.Is(err, eebusapi.ErrDataNotAvailable) {
+		// scenario announced but no usable value yet
+		if errors.Is(err, eebusapi.ErrDataNotAvailable) ||
+			errors.Is(err, eebusapi.ErrMetadataNotAvailable) ||
+			errors.Is(err, eebusapi.ErrDataInvalid) {
 			err = api.ErrNotAvailable
 		}
 		return zero, err
@@ -188,10 +190,6 @@ func (c *EEBus) readPhases(scenario uint, update func(entity spineapi.EntityRemo
 
 	res, err := eebusReadValue(c.mm, c.maEntity, scenario, update)
 	if err != nil {
-		// announced but not provided
-		if errors.Is(err, eebusapi.ErrDataNotAvailable) {
-			err = api.ErrNotAvailable
-		}
 		return 0, 0, 0, err
 	}