diff --git a/templates/definition/meter/openems.yaml b/templates/definition/meter/openems.yaml
index 4e7c11963..a4c2c07d3 100644
--- a/templates/definition/meter/openems.yaml
+++ b/templates/definition/meter/openems.yaml
@@ -55,12 +55,15 @@ params:
       en: FEMS/OpenEMS standard 60s
     usages: ["battery"]
   - preset: battery-params
+  - name: cache
+    default: 1s
 render: |
   type: custom
   {{- if eq .usage "grid" }} 
   power:
     source: http
     uri: http://{{ .host }}/rest/channel/_sum/GridActivePower
+    cache: {{ .cache }}
     auth:
       type: basic
       user: x
@@ -69,6 +72,7 @@ render: |
   energy:
     source: http
     uri: http://{{ .host }}/rest/channel/_sum/GridBuyActiveEnergy
+    cache: {{ .cache }}
     auth:
       type: basic
       user: x
@@ -79,6 +83,7 @@ render: |
   power:
     source: http
     uri: http://{{ .host }}/rest/channel/_sum/ProductionActivePower
+    cache: {{ .cache }}
     auth:
       type: basic
       user: x
@@ -87,6 +92,7 @@ render: |
   energy:
     source: http
     uri: http://{{ .host }}/rest/channel/_sum/ProductionActiveEnergy
+    cache: {{ .cache }}
     auth:
       type: basic
       user: x
@@ -98,6 +104,7 @@ render: |
   power:
     source: http
     uri: http://{{ .host }}/rest/channel/_sum/EssDischargePower
+    cache: {{ .cache }}
     auth:
       type: basic
       user: x
@@ -106,6 +113,7 @@ render: |
   soc:
     source: http
     uri: http://{{ .host }}/rest/channel/_sum/EssSoc
+    cache: {{ .cache }}
     auth:
       type: basic
       user: x