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teslaPowerwall

A project to automate switching modes for Tesla Powerwall Owners

Welcome! This is my 1st Python project

Thanks a friend for helping me with Python in a huge way and to https://www.teslaapi.io/ for their teardown on the current Tesla API!

In an attempt to simplify the lack of functionality in the Tesla app, I wanted a way to switch from Advanced time-based control (autonomous) to Self-powered (self_consumption), and back after the sun sets. For my use case, I do not want to export energy back to the grid and want to charge my Powerwalls as much as possible. This way I can run off of our Powerwalls as long as possible so we don't consume electricity between 3pm - 12am (my peak price times).

Understanding the files provided

teslatoken.py - A Python script to automate getting a valid oauth token from Tesla

  • Read a .yml file that contains the username and password for the Tesla account
  • Obtain an access_token
  • Save the token file to a token.yml file for use while it's valid (default is 45 days set by Tesla)
  • Check to see if the current token is still valid. If not, get a new token

pw_mode.py - A Python script to obtain the energy_site_id for the Tesla account and command line arguments to switch the energy mode.

  • Get the products for the Tesla account
  • Gather the energy_site_id for the account
  • Take command line arguments to switch the mode of the Solar/Powerwalls to/from self_consumption or autonomous

Installation

Clone this repository to your server/host/VM, etc:

git clone https://github.com/natrlhy/teslaPowerwall.git

Ensure you have a working installation of Python 3 on your server

Usage

Modify the accounts.yml to include your Tesla Account email address the the respective password.

In the constants.py file you may want to modify these lines to fit your environment. It assumes you will be in the directory that you are running the pw_mode.py script.

ACCOUNTS = "accounts.yml"
TOKENFILE = "token.yml"

Switch the mode to the Self-powered mode:

cd ~/teslPowerwall
python3 pw_mode.py self_consumption

Switch the mode to Advanced time-based control:

cd ~/teslPowerwall
python3 pw_mode.py autonomous

There will be a resulting powerwall.log file you can review for issues/errors, etc.

Screenshots

Advanced Mode

After switching to Self-powered. Supplying Solar energy to the home and charging the Powerwalls!

Self-powered Mode

Suggestions

Linux/Rasberry Pi

To automate this, I am using a Raspberry Pi3. In cron I have this set:

00 15 * * * cd ~/teslaPowerwall;python3 pw_mode.py self_consumption
00 17 * * * cd ~/teslaPowerwall;python3 pw_mode.py autonomous

Windows

A quick guide on how to import tasks:

https://www.tenforums.com/tutorials/65264-import-task-task-scheduler-windows.html

I've included two Windows Task Scheduler xml files you can import into Windows Task Scheduler. You will need to modify the following:

  • Read instructions above first on overall understanding of these scripts/files.
  • Change User or Group
  • Path to where you will be running the python script
  • Times you'd like to run each task to fit your needs

As noted in the Installation section above, make sure you have a working Python 3.8 installation on your Windows machine

To-Do List

  • Command line switch parameters and help