Click the Energy category to show the Grid Forecast.
Green bars indicate when cleaner energy is available in your area—from 10:00 a.m. until 2:00 p.m., for example. If there are no bars, cleaner energy isn’t in the forecast for the near future.
Note: If you haven’t added accessories to your home, the Grid Forecast appears when you open the Home app.
To receive notifications when the electricity powering your home is being generated by cleaner or more renewable sources of energy, do any of the following:
In the Home app , choose Home Settings, click Energy, then turn on Show Grid Forecast.
Control-click the Grid Forecast on the Home screen, then choose Notify Me About Next Cleaner Time.
In the Home app Control Home accessories on Mac