diff --git a/templates/definition/tariff/open-meteo.yaml b/templates/definition/tariff/open-meteo.yaml
index 949faf069..3d1fa79a1 100644
--- a/templates/definition/tariff/open-meteo.yaml
+++ b/templates/definition/tariff/open-meteo.yaml
@@ -72,7 +72,7 @@ render: |
   tariff: solar
   forecast:
     source: http
-    uri: https://api.open-meteo.com/v1/forecast?latitude={{ .lat }}&longitude={{ .lon }}&azimuth={{ .az }}&tilt={{ .dec }}&minutely_15=temperature_2m,global_tilted_irradiance_instant&daily=sunrise,sunset&forecast_days=3&timezone=GMT&timeformat=unixtime
+    uri: https://api.open-meteo.com/v1/forecast?latitude={{ .lat }}&longitude={{ .lon }}&azimuth={{ .az }}&tilt={{ .dec }}&minutely_15=temperature_2m,global_tilted_irradiance_instant&daily=sunrise,sunset&forecast_days=5&timezone=GMT&timeformat=unixtime
     jq: |
       def alphatemp: {{ .alphatemp }}; # temperature coefficient
       def rossmodel: {{ .rossmodel }}; # cooling type