From be76f786c65b3e9a214e29da111289ff0e4e3d75 Mon Sep 17 00:00:00 2001
From: premultiply <4681172+premultiply@users.noreply.github.com>
Date: Sat, 29 Nov 2025 13:58:49 +0100
Subject: [PATCH] Add Sermatec Hybrid Inverter (#25684)

---
 .../definition/meter/sermatec-hybrid.yaml     | 75 +++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 templates/definition/meter/sermatec-hybrid.yaml

diff --git a/templates/definition/meter/sermatec-hybrid.yaml b/templates/definition/meter/sermatec-hybrid.yaml
new file mode 100644
index 000000000..305e0783e
--- /dev/null
+++ b/templates/definition/meter/sermatec-hybrid.yaml
@@ -0,0 +1,75 @@
+template: sermatec-hybrid
+products:
+  - brand: Sermatec
+    description:
+      generic: SMT-5K-TL-LV Hybrid Inverter
+  - brand: Sermatec
+    description:
+      generic: SMT-10K-TL-LV Hybrid Inverter
+params:
+  - name: usage
+    choice: ["grid", "pv", "battery"]
+  - name: modbus
+    choice: ["rs485"]
+    baudrate: 9600
+    id: 1
+  - name: capacity
+    advanced: true
+  - name: maxacpower
+render: |
+  type: custom
+  {{- if eq .usage "grid" }}
+  power:
+    source: modbus
+    {{- include "modbus" . | indent 2 }}
+    register:
+      address: 0x4017 # Net side active power (negative = import from grid, positive = export to grid)
+      type: holding
+      decode: int16
+    scale: -1
+  {{- end }}
+  {{- if eq .usage "pv" }}
+  power:
+    source: calc
+    add:
+    - source: modbus
+      {{- include "modbus" . | indent 4 }}
+      register:
+        address: 0x4002 # PV1 power
+        type: holding
+        decode: int16
+    - source: modbus
+      {{- include "modbus" . | indent 4 }}
+      register:
+        address: 0x4005 # PV2 power
+        type: holding
+        decode: int16
+  maxacpower: {{ .maxacpower }}
+  {{- end }}
+  {{- if eq .usage "battery" }}
+  power:
+    source: calc
+    mul:
+    - source: modbus
+      {{- include "modbus" . | indent 4 }}
+      register:
+        address: 0x3000 # Battery voltage
+        type: holding
+        decode: uint16
+      scale: 0.1
+    - source: modbus
+      {{- include "modbus" . | indent 4 }}
+      register:
+        address: 0x3001 # Battery current
+        type: holding
+        decode: int16
+      scale: 0.1
+  soc:
+    source: modbus
+    {{- include "modbus" . | indent 2 }}
+    register:
+      address: 0x3003 # Battery SOC
+      type: holding
+      decode: uint16
+  capacity: {{ .capacity }} # kWh
+  {{- end }}