Added previous, current and next electricity rates to assist.

Update #99

packages/integrations/energy/energy.yaml

@@ -320,8 +320,14 @@ conversation:
       - "When will the battery run out"
     getBatterySummary:
       - "Battery summary"
+    getCurrentElectricityRates:
+      - "[What is the current] [electricity] [unit] rates"
     getInverterMode:
       - "[What is the] inverter mode"
+    getNextElectricityRates:
+      - "[What is the] next [electricity] [unit] rates"
+    getPreviousElectricityRates:
+      - "[What was the] (old|previous|last) [electricity] [unit] rates"
     getSolarForecastLeft:
       - "[How much] solar [generation is] (left|remaining) [today]"
       - "Remaining solar [generation] [forecast] [today]"
@@ -346,10 +352,25 @@ intent_script:
       text: >-
         {{ states('sensor.growatt_sph_battery_state_of_charge', with_unit=True) }}
         and will run out in {{ states('sensor.battery_charge_remaining_hours') }}
+  getCurrentElectricityRates:
+    speech:
+      text: >-
+        {{ states('sensor.electricity_current_rate')|float(0)|round(2) }}
+        {{ state_attr('sensor.electricity_current_rate', 'unit_of_measurement') }}.
   getInverterMode:
     speech:
       text: >-
         {{ states('sensor.growatt_sph_inverter_mode') }}
+  getNextElectricityRates:
+    speech:
+      text: >-
+        {{ states('sensor.electricity_next_rate')|float(0)|round(2) }}
+        {{ state_attr('sensor.electricity_next_rate', 'unit_of_measurement') }}.
+  getPreviousElectricityRates:
+    speech:
+      text: >-
+        {{ states('sensor.electricity_previous_rate')|float(0)|round(2) }}
+        {{ state_attr('sensor.electricity_previous_rate', 'unit_of_measurement') }}.
   getSolarForecastLeft:
     speech:
       text: >-