excess pv boiler stuff

excess_pv_boiler/automations.yaml

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+- alias: DHW Boiler Heater Relay Automation
+  description: >-
+    This automation makes sure the boiler auxiliary heater only works when the
+    boost is required and the heatpump aux heater is not on
+  triggers:
+    - trigger: state
+      entity_id:
+        - binary_sensor.dhw_use_boiler_aux_heater
+  conditions: []
+  actions:
+    - if:
+        - condition: state
+          entity_id: binary_sensor.dhw_use_boiler_aux_heater
+          state: "on"
+      then:
+        - type: turn_on
+          device_id: b6129664e9bea24cdab57a9c743b885d
+          entity_id: 1b7e7c5bd07a3823f8df13b623f95e0a
+          domain: switch
+      else:
+        - type: turn_off
+          device_id: b6129664e9bea24cdab57a9c743b885d
+          entity_id: 1b7e7c5bd07a3823f8df13b623f95e0a
+          domain: switch
+  mode: single
+
+- alias: DHW Manage PV Thermostat
+  description: Controls shadow thermostat based on PV excess availability
+  mode: restart
+  trigger:
+      # Trigger when PV power becomes sufficient (with delay)
+    - platform: state
+      entity_id: binary_sensor.dhw_pv_power_enough_for_aux_heater
+      to: "on"
+      for:
+        minutes: "{{ states('input_number.dhw_pv_excess_usage_start_delay')|int }}"
+      id: "turn_on"
+
+      # Trigger when PV power becomes insufficient (with delay)
+    - platform: state
+      entity_id: binary_sensor.dhw_pv_power_enough_for_aux_heater
+      to: "off"
+      for:
+        minutes: "{{ states('input_number.dhw_pv_excess_usage_stop_delay')|int }}"
+      id: "turn_off"
+  action:
+    - choose:
+        - conditions:
+            - condition: state
+              entity_id: input_boolean.dhw_use_excess_pv_for_aux_heater
+              state: "on"
+            - condition: trigger
+              id: "turn_on"
+          sequence:
+            - service: climate.set_temperature
+              target:
+                entity_id: climate.dhw_pv_excess_heating
+              data:
+                temperature: "{{ states('input_number.dhw_pv_target_temperature') | float }}"
+                hvac_mode: "heat"
+
+        - conditions:
+            - condition: trigger
+              id: "turn_off"
+          sequence:
+            - service: climate.set_hvac_mode
+              target:
+                entity_id: climate.dhw_pv_excess_heating
+              data:
+                hvac_mode: "off"

excess_pv_boiler/climate.yaml

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+- platform: generic_thermostat
+  name: "DHW PV Excess Heating"
+  heater: input_boolean.boiler_pv_dummy_heater
+  target_sensor: sensor.boiler_temp
+  min_temp: 10
+  max_temp: 70
+  cold_tolerance: 1
+  hot_tolerance: 0.5
+  min_cycle_duration:
+    minutes: 2
+  initial_hvac_mode: "off"
+  precision: 0.1
+
+- platform: generic_thermostat
+  name: "Boiler Temperature"
+  heater: input_boolean.boiler_pv_dummy_heater  # Uses the dummy switch
+  target_sensor: sensor.boiler_temp  # Or whatever sensor you're using from heatpump
+  min_temp: 10
+  max_temp: 70
+  cold_tolerance: 4.0
+  hot_tolerance: 1.0
+  min_cycle_duration:
+    minutes: 2

excess_pv_boiler/input_boolean.yaml

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+dhw_aux_heater_manual_override:
+  name: "DHW Aux Heater Manual Override"
+  icon: mdi:water-boiler
+
+dhw_allow_aux_heater_usage:
+  name: "DHW Allow Aux Heater Usage"
+  icon: mdi:check-circle
+
+dhw_use_excess_pv_for_aux_heater:
+  name: "DHW Use Excess PV for Aux Heater"
+  icon: mdi:solar-power
+
+dhw_allow_aux_heater_in_all_modes:
+  name: "DHW Allow Aux Heater in All Modes"
+  icon: mdi:thermostat
+
+# Dummy switch for shadow thermostat
+boiler_pv_dummy_heater:
+  name: "Boiler PV Dummy Heater"
+  icon: mdi:flash

excess_pv_boiler/input_number.yaml

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+dhw_aux_heater_cut_off_temperature_threshold:
+  name: "DHW Aux Heater Cut-off Temperature Threshold"
+  min: 50
+  max: 85
+  step: 1
+  unit_of_measurement: "°C"
+  icon: mdi:thermometer-high
+
+dhw_aux_heater_temperature_threshold:
+  name: "DHW Aux Heater Temperature Threshold"
+  min: 1
+  max: 15
+  step: 0.5
+  unit_of_measurement: "°C"
+  icon: mdi:thermometer-lines
+
+dhw_pv_target_temperature:
+  name: "DHW PV Target Temperature"
+  min: 40
+  max: 70
+  step: 1
+  unit_of_measurement: "°C"
+  icon: mdi:solar-power

excess_pv_boiler/templates.yaml

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+- binary_sensor:
+
+    - name: "DHW: Use Boiler Aux Heater"
+      unique_id: "dhw_config_use_boiler_aux_heater"
+      state: >
+        {% set manual_on = states('input_boolean.dhw_aux_heater_manual_override') == 'on' %}
+        {% set hp_aux_off = states('sensor.heat_pump_auxiliary_heater') != 'on' %}
+        {% set boiler_aux_allowed = states('input_boolean.dhw_allow_aux_heater_usage') == 'on' %}
+        {% set boiler_temp_ok = states('sensor.boiler_temp')|float < states('input_number.dhw_aux_heater_cut_off_temperature_threshold')|float %}
+        {# allowed checks if the resistance is permitted to run, mostly to check we're not running both boiler and HP resistance at the same time #}
+        {% set allowed = hp_aux_off and boiler_aux_allowed and boiler_temp_ok %}
+        {# here go various other conditions that influence the decision to run the boiler auxiliary heater #}
+        {# PV Excess to boiler - now using shadow thermostat #}
+        {% set pv_excess = states('input_boolean.dhw_use_excess_pv_for_aux_heater') == 'on' and 
+          state_attr('climate.dhw_pv_excess_heating', 'hvac_action') == 'heating' %}
+        {% set thermostat_activity_boost = state_attr('climate.boiler_temperature','preset_mode') == 'activity' and 
+            state_attr('climate.boiler_temperature','hvac_action') == 'heating'%} 
+        {% set thermostat_normal_boost = states('input_boolean.dhw_allow_aux_heater_in_all_modes') == 'on' and 
+            state_attr('climate.boiler_temperature','hvac_action') == 'heating'%}  
+        {{ manual_on or 
+          (allowed and (
+            pv_excess or
+            thermostat_activity_boost or 
+            thermostat_normal_boost
+          )) }}
+
+    - name: "DHW: PV Power Enough for Aux Heater "
+      unique_id: "dhw_pv_power_enough_for_aux_heater"
+      state: >
+        {% set phase_buffer = states('input_number.dhw_pv_excess_usage_buffer')|float / 3 %}
+        {% set phase_heater_power= states('input_number.dhw_aux_heater_power')|float /3 %}
+        {% set turn_on_threshold = -1*(phase_buffer+phase_heater_power) %}
+        {% if is_state('switch.boiler_heater_relay_switch_0', 'on') %}
+              {{ states('sensor.deye_12_external_ct1_power')|float <= 0 
+              and states('sensor.deye_12_external_ct2_power')|float <= 0
+              and states('sensor.deye_12_external_ct3_power')|float <= 0 }}
+            {% else %}
+              {{ states('sensor.deye_12_external_ct1_power')|float < turn_on_threshold 
+              and states('sensor.deye_12_external_ct2_power')|float < turn_on_threshold 
+              and states('sensor.deye_12_external_ct3_power')|float < turn_on_threshold }}
+            {% endif %}
+      device_class: power