diff --git a/tariff/awattar.go b/tariff/awattar.go
index 5faa79251..843f42859 100644
--- a/tariff/awattar.go
+++ b/tariff/awattar.go
@@ -43,6 +43,7 @@ func NewAwattarFromConfig(other map[string]interface{}) (api.Tariff, error) {
 		embed: &cc.embed,
 		log:   util.NewLogger("awattar"),
 		uri:   fmt.Sprintf(awattar.RegionURI, strings.ToLower(cc.Region)),
+		data:  util.NewMonitor[api.Rates](2 * time.Hour),
 	}
 
 	done := make(chan error)
diff --git a/tariff/entsoe.go b/tariff/entsoe.go
index d9cab77e6..1cdad77f9 100644
--- a/tariff/entsoe.go
+++ b/tariff/entsoe.go
@@ -65,6 +65,7 @@ func NewEntsoeFromConfig(other map[string]interface{}) (api.Tariff, error) {
 		embed:  &cc.embed,
 		token:  cc.Securitytoken,
 		domain: domain,
+		data:   util.NewMonitor[api.Rates](2 * time.Hour),
 	}
 
 	// Wrap the client with a decorator that adds the security token to each request.