iOS 17 and watchOS 10 include a rather smart feature, which, however, may not be highly useful for people outside the US. It’s the Home app’s ability to show when your home is using the most renewable energy.
The feature is designed to use your location to determine when ‘clean’ energy is available for use, allowing you to be aware of your renewable energy usage. The forecast is based on your device and your home’s location.
Currently, this feature is only available in the USA.