diff --git a/templates/definition/tariff/energy-charts-api.yaml b/templates/definition/tariff/energy-charts-api.yaml
index 4dd8bf772..76d98048e 100644
--- a/templates/definition/tariff/energy-charts-api.yaml
+++ b/templates/definition/tariff/energy-charts-api.yaml
@@ -41,3 +41,4 @@ render: |
     source: http
     uri: https://api.energy-charts.info/price?bzn={{ .bzn }}&end={{"{{"}} now | dateModify "+24h" | date "2006-01-02" {{"}}"}}
     jq: '[.unix_seconds, .price] | transpose | map({ "start": (.[0] | todate), "end": ((.[0]+3600) | todate), "price": (.[1]/1000)}) | tostring'
+    cache: 1h