Add Power Negate option to Solar Power Sensor

Some exotic setups may have a negative power value for solar. Given grid and battery have negate options it doesn't seem out of place for solar to have that also.

Author: TCWORLD

src/data/energy.ts

@@ -158,6 +158,7 @@ export interface SolarSourceTypeEnergyPreference {
 
   stat_energy_from: string;
   stat_rate?: string;
+  stat_rate_negate?: boolean;
   config_entry_solar_forecast: string[] | null;
 }
 

src/panels/config/energy/dialogs/dialog-energy-solar-settings.ts

@@ -135,6 +135,19 @@ export class DialogEnergySolarSettings
             { unit: this._power_units?.join(", ") || "" }
           )}
         ></ha-statistic-picker>
+        <ha-formfield
+          .label=${html`<div style="display: flex; align-items: center;">
+            ${this.hass.localize(
+              "ui.panel.config.energy.solar.dialog.solar_production_power_negate"
+            )}
+          </div>`}
+        >
+          <ha-checkbox
+            @change=${this._powerNegateChanged}
+            .checked=${!!this._source?.stat_rate_negate}
+          >
+          </ha-checkbox>
+        </ha-formfield>
 
         <h3>
           ${this.hass.localize(
@@ -293,6 +306,14 @@ export class DialogEnergySolarSettings
     this._source = { ...this._source!, stat_rate: ev.detail.value };
   }
 
+  private _powerNegateChanged(ev) {
+    const input = ev.currentTarget as HaCheckbox;
+    this._source = {
+      ...this._source!,
+      stat_rate_negate: input.checked,
+    };
+  }
+
   private async _save() {
     try {
       if (!this._forecast) {

src/panels/lovelace/cards/energy/hui-power-sankey-card.ts

@@ -494,7 +494,10 @@ class HuiPowerSankeyCard
       .filter((source) => source.type === "solar")
       .forEach((source) => {
         if (source.type === "solar" && source.stat_rate) {
-          const value = this._getCurrentPower(source.stat_rate);
+          const value = this._getCurrentPower(
+            source.stat_rate,
+            !!source.stat_rate_negate
+          );
           if (value > 0) {
             solar += value;
           }

src/panels/lovelace/cards/energy/hui-power-sources-graph-card.ts

@@ -180,7 +180,10 @@ export class HuiPowerSourcesGraphCard
     for (const source of energyData.prefs.energy_sources) {
       if (source.type === "solar") {
         if (source.stat_rate) {
-          statIds.solar.stats.push({ id: source.stat_rate });
+          statIds.solar.stats.push({
+            id: source.stat_rate,
+            negate: !!source.stat_rate_negate,
+          });
         }
         continue;
       }

src/translations/en.json

@@ -3163,6 +3163,7 @@
               "entity_para": "Pick a sensor which measures solar production in either of {unit}.",
               "solar_production_energy": "Solar production energy",
               "solar_production_power": "Solar production power",
+              "solar_production_power_negate": "Invert power sensor polarity",
               "solar_production_forecast": "Solar production forecast",
               "solar_production_forecast_description": "Adding solar production forecast information will allow you to quickly see your expected production for today.",
               "dont_forecast_production": "Don't forecast production",