WattTime

The WattTime integrationIntegrations connect and integrate Home Assistant with your devices, services, and more. [Learn more] allows users to get real-time emissions data for a latitude/longitude from WattTime.

Registering an account

WattTime account registration is accomplished via the REST API itself. The simplest way to do this is by using cURL on the command line:

curl -X "POST" "https://api2.watttime.org/v2/register" \
     -H 'Content-Type: application/json' \
     -d '{
       "username": "<USERNAME>",
       "password": "<PASSWORD>",
       "email": "<EMAIL>",
       "org": "<ORG>"
     }'

Note that the org value can be anything you like – it doesn’t need to represent a real entity.

Configuration

To add the WattTime service to your Home Assistant instance, use this My button:

Sensors

You can learn more about the data that WattTime collects by viewing these articles:

• https://www.watttime.org/aer/what-is-aer/
• https://www.watttime.org/aer/how-aer-works/