diff --git a/meter/rct.go b/meter/rct.go
index 05caeefe2..2985d9a16 100644
--- a/meter/rct.go
+++ b/meter/rct.go
@@ -70,7 +70,7 @@ func NewRCTFromConfig(ctx context.Context, other map[string]any) (api.Meter, err
 }
 
 // NewRCT creates an RCT meter
-func NewRCT(ctx context.Context, uri, usage string, batterySocLimits batterySocLimits, batteryPowerLimits batteryPowerLimits, cache time.Duration, externalPower bool, capacity float64, capacity2 float64) (api.Meter, error) {
+func NewRCT(ctx context.Context, uri, usage string, batterySocLimits batterySocLimits, batteryPowerLimits batteryPowerLimits, cache time.Duration, externalPower bool, capacity, capacity2 float64) (api.Meter, error) {
 	log := util.NewLogger("rct")
 
 	// re-use connections
diff --git a/templates/definition/meter/rct-power.yaml b/templates/definition/meter/rct-power.yaml
index f562f93fd..8c59eb90d 100644
--- a/templates/definition/meter/rct-power.yaml
+++ b/templates/definition/meter/rct-power.yaml
@@ -10,6 +10,9 @@ params:
   - name: usage
     choice: ["grid", "pv", "battery"]
   - name: host
+  - name: port
+    default: 8899
+    advanced: true
   - name: externalpower
     type: bool
     description:
@@ -38,7 +41,7 @@ params:
     default: 30s
 render: |
   type: rct
-  uri: {{ .host }}
+  uri: {{ .host }}:{{ .port }}
   usage: {{ .usage }}
   cache: {{ .cache }}
   {{- include "battery-params" . }}