diff --git a/tariff/solcast.go b/tariff/solcast.go
index fb8d58280..2278ed0b5 100644
--- a/tariff/solcast.go
+++ b/tariff/solcast.go
@@ -71,7 +71,8 @@ func NewSolcastFromConfig(other map[string]interface{}) (api.Tariff, error) {
 func (t *Solcast) run(done chan error) {
 	var once sync.Once
 
-	for ; true; <-time.Tick(time.Hour) {
+	// don't exceed 10 requests per 24h
+	for ; true; <-time.Tick(time.Duration(3*len(t.sites)) * time.Hour) {
 		var res solcast.Forecasts
 
 		if err := backoff.Retry(func() error {