Hi!
You have to update your “configuration.yaml” file for now until I’ve created a custom component. Read here how: https://www.home-assistant.io/docs/configuration/yaml/. Use the examples im by previous post.
Find the IP address of your Energymeter and open http://<ip-address>/api/v1/data in your browser to see if it is up, and update configuration.yaml with the correct IP. Good luck!