Choose areas and subscribe to their urls.
In your calendar app one can click calendars by area on/off as needed. Algorithm to generate area .ics files is based on Western Cape schedule areas 1 to 16.
It is defined in south africa time, and will convert to the timezone of your calendar app, showing the actual time of the possible outage.
How to add by url (using a link) to Google Calendar:
How to subscribe to an external calendar on apple:
New to the joys of multiple calendars? Browse more at Google or grab these:
Warning: Do not import a large ics file into your main personal calendar! This will clog it up. Rather subscribe or import into a separate disposable calendar, in case the schedules change. If you have imported, and want to bulk delete, you'll need something like the gcaltoolkit