diff --git a/charger/dadapower.go b/charger/dadapower.go
index 28a454879d..2196ab47ae 100644
--- a/charger/dadapower.go
+++ b/charger/dadapower.go
@@ -9,6 +9,7 @@ import (
 	"github.com/evcc-io/evcc/api"
 	"github.com/evcc-io/evcc/util"
 	"github.com/evcc-io/evcc/util/modbus"
+	"github.com/evcc-io/evcc/util/sponsor"
 )
 
 const (
@@ -57,6 +58,10 @@ func NewDadapower(uri string, id uint8) (*Dadapower, error) {
 		return nil, err
 	}
 
+	if !sponsor.IsAuthorized() {
+		return nil, api.ErrSponsorRequired
+	}
+
 	log := util.NewLogger("dadapower")
 	conn.Logger(log.TRACE)