updates to evse

LVX6048/homeassistant/README.md

@@ -11,6 +11,7 @@ Mirrors the `eg4battery/homeassistant/` pattern.
 | File                       | Where it goes in HA                                          |
 |----------------------------|--------------------------------------------------------------|
 | `mqtt_controls.yaml`       | `configuration.yaml` → `mqtt: !include lvx6048/mqtt_controls.yaml` (or merge by hand) |
+| `template_sensors.yaml`    | `configuration.yaml` → `template: !include lvx6048/template_sensors.yaml` |
 | `lovelace_controls.yaml`   | Raw Lovelace card config — paste into a new dashboard view   |
 
 The auto-discovery sensors (battery V, fault code, mode, MPPT power, …)
@@ -20,6 +21,10 @@ This folder only adds the pieces HA can't infer:
 - **Control entities** — selects + numbers that publish to
   `solar/control/lvx6048/<action>` so users can change settings from a
   dashboard without touching the LCD.
+- **Stack-total derived sensors** — the PI18 GS command only exposes per-unit
+  numbers, so a 240 V load split across two LVX6048s shows as ~half on each.
+  `template_sensors.yaml` synthesizes household-level totals (apparent_power,
+  active_power, mppt1_input_power).
 - **A dashboard view** that wraps those controls with the existing
   telemetry into one screen.
 

LVX6048/homeassistant/template_sensors.yaml

@@ -0,0 +1,54 @@
+# Derived template sensors for the 2× LVX6048 parallel stack.
+# Each LVX6048 reports its own AC output and MPPT contribution; PI18 GS has
+# no system-total field (PGS does, but powermon doesn't poll it). These
+# rollups synthesize the household-level numbers from the per-unit data.
+#
+# Include into configuration.yaml as:
+#     template: !include lvx6048/template_sensors.yaml
+#
+# Stack rollups created:
+#   sensor.lvx6048_stack_ac_output_apparent_power  VA  (unit_1 + unit_2)
+#   sensor.lvx6048_stack_ac_output_active_power    W   (unit_1 + unit_2)
+#   sensor.lvx6048_stack_mppt1_input_power         W   (solar in, both units)
+#
+# Background: with the inverters in 120/240 split-phase wiring, an EV
+# pulling 24 A at 240 V drives 24 A through each leg, so each LVX shows
+# only its 120 V × 24 A ≈ 2880 VA contribution. The stack rollup is the
+# real household-level number.
+
+- sensor:
+    - name: "lvx6048_stack ac_output_apparent_power"
+      unique_id: lvx6048_stack_ac_output_apparent_power
+      unit_of_measurement: "VA"
+      device_class: apparent_power
+      state_class: measurement
+      state: >
+        {% set p = [
+          states('sensor.lvx6048_1_ac_output_apparent_power') | float(0),
+          states('sensor.lvx6048_2_ac_output_apparent_power') | float(0),
+        ] %}
+        {{ p | sum | round(0) }}
+
+    - name: "lvx6048_stack ac_output_active_power"
+      unique_id: lvx6048_stack_ac_output_active_power
+      unit_of_measurement: "W"
+      device_class: power
+      state_class: measurement
+      state: >
+        {% set p = [
+          states('sensor.lvx6048_1_ac_output_active_power') | float(0),
+          states('sensor.lvx6048_2_ac_output_active_power') | float(0),
+        ] %}
+        {{ p | sum | round(0) }}
+
+    - name: "lvx6048_stack mppt1_input_power"
+      unique_id: lvx6048_stack_mppt1_input_power
+      unit_of_measurement: "W"
+      device_class: power
+      state_class: measurement
+      state: >
+        {% set p = [
+          states('sensor.lvx6048_1_mppt1_input_power') | float(0),
+          states('sensor.lvx6048_2_mppt1_input_power') | float(0),
+        ] %}
+        {{ p | sum | round(0) }}