diff --git a/templates/definition/meter/kostal-piko-mp-plus.yaml b/templates/definition/meter/kostal-piko-mp-plus.yaml
index 2ae6988b0..5c6cff60c 100644
--- a/templates/definition/meter/kostal-piko-mp-plus.yaml
+++ b/templates/definition/meter/kostal-piko-mp-plus.yaml
@@ -21,5 +21,5 @@ render: |
     # PV
     source: http
     uri: http://{{ .host }}/measurements.xml
-    jq: .root.Device.Measurements.Measurement[] | select(.attrType == "AC_Power") | .attrValue | tonumber
+    jq: .root.Device.Measurements.Measurement[] | select(.attrType == "AC_Power") | if has ("attrValue") then .attrValue else "0" end | tonumber
   {{- end -}}