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GoodWe Solar Logger

Log the performance of your solar panels with a GoodWe inverter.

This will create a .csv file with a timestamp and the real-time power being generated (Watts).

The script attempts to read from the inverter every time it runs. The first time it runs after the sun is down, it generates a PNG and optionally shares it using one of the integrations.

You can place this in your crontab to run every minute - or as often as you wish.

Example crontab:

* * * * * cd /home/solar/app && ./venv solar.py

Configuration

Copy config.sample.py to config.py and update the configuration.

IP_address is the IP address of your inverter.

installed_max is the maximum production in Watts, and used for scaling the generated graph.

city_name gets printed in the header of the graph, but no validation is done, so can be anything.

tz_name/tz_region, latitude/longitude and elevation is used for determining when the sun is up or not.

Data format

Each run attempts to connect to the inverter and report back. Since the inverter gets its power from the sun, it's not always online. Nothing gets written when it does not respond, so each csv-file may have gaps at the beginning and end of the day.

The result gets written to a CSV file with two columns:

  1. the timestamp in UTC
  2. the current power in watts

Integrations

Twitter

(╯°□°）╯︵ ┻━┻

Mastodon

Live example: @[email protected]

Set up your own:

  1. Create an account for your bot on a chosen server
  2. Create an application under Preferences -> Development
    • Give the application a nice name
    • Leave the redirect URI
    • Needs at least write:media and write:statuses scopes in order to work
  3. Copy the client key/secret and access token into config.py
  4. Set mastodon_enabled to True and wait for it to work.

Credits

Based on a copy of @edent's Fronius-DataManager-Solar-Logger.