diff --git a/templates/definition/tariff/energy-charts-api.yaml b/templates/definition/tariff/energy-charts-api.yaml
index 88c077f91..a3ba8825c 100644
--- a/templates/definition/tariff/energy-charts-api.yaml
+++ b/templates/definition/tariff/energy-charts-api.yaml
@@ -50,6 +50,7 @@ render: |
   forecast:
     source: http
     uri: https://api.energy-charts.info/price?bzn={{ .bzn }}&end={{ `{{ addDate now 0 0 1 | date "2006-01-02" }}` }}
+    cache: 1h
     jq: |
       [.unix_seconds, .price] | transpose | map({
         "start": .[0] | todate,