Add page for PECO integration (#21392)

.vscode/cSpell.json

@@ -63,6 +63,7 @@
     "OpenZWave",
     "OwnTracks",
     "Paulus",
+    "PECO",
     "Powerwall",
     "Pushbullet",
     "Schoutsen",

source/_integrations/peco.markdown

@@ -0,0 +1,35 @@
+---
+title: "PECO Outage Count"
+description: "Get how many outages are in your county"
+ha_release: 2022.4
+ha_category: Sensor
+ha_iot_class: "Cloud Polling"
+ha_quality_scale: platinum
+ha_config_flow: true
+ha_codeowners:
+  - '@IceBotYT'
+ha_domain: peco
+---
+
+PECO is a public utility company that provides electricity to the Philadelphia metro.
+
+To learn more about PECO, visit [**their about page**](https://www.peco.com/AboutUs/Pages/Default.aspx).
+
+<div class='note'>
+
+This integration is only for PECO customers. To see if your county is supported, take a look at [**their outage map**](https://www.peco.com/Outages/CheckOutageStatus/Pages/OutageMap.aspx).
+
+</div>
+
+---
+
+The PECO Outage Counter integration allows you to get the current count of power outages for any county, and the total for the operating region too.
+
+This integration will create 4 entities.
+
+- A sensor that shows how many outages are in your county.
+- A sensor that shows the total amount of customers with no power.
+- A sensor that shows the total amount of customers served in the county.
+- A sensor that shows the percentage of customers with no power.
+
+{% include integrations/config_flow.md %}