growattServer 1.4.0

A package to talk to growatt server

Growatt Server

Package to retrieve PV information from the growatt server.

Special thanks to Sjoerd Langkemper who has provided a strong base to start off from https://github.com/Sjord/growatt_api_client These projects may merge in the future since they are simmilar in code and function.

Usage

import growattServer

api = growattServer.GrowattApi()
login_response = api.login(<username>, <password>)
#Get a list of growatt plants.
print(api.plant_list(login_response['user']['id']))

Methods and Variables

Methods

Any methods that may be useful.

api.login(username, password) Log into the growatt API. This must be done before making any request. After this you will be logged in. You will want to capture the response to get the userId variable.

api.plant_list(user_id) Get a list of plants registered to your account.

api.plant_info(plant_id) Get info for specified plant.

api.plant_detail(plant_id, timespan<1=day, 2=month>, date) Get details of a specific plant.

api.inverter_list(plant_id) Get a list of inverters in specified plant. (May be deprecated in the future, since it gets all devices. Use device_list instead).

api.device_list(plant_id) Get a list of devices in specified plant.

api.inverter_data(inverter_id, date) Get some basic data of a specific date for the inverter.

api.inverter_detail(inverter_id) Get detailed data on inverter.

api.tlx_data(tlx_id, date) Get some basic data of a specific date for the tlx type inverter.

api.tlx_detail(tlx_id) Get detailed data on a tlx type inverter.

api.mix_info(mix_id, plant_id=None) Get high level information about the Mix system including daily and overall totals. NOTE: plant_id is an optional parameter, it does not appear to be used by the remote API, but is used by the mobile app these calls were reverse-engineered from.

api.mix_totals(mix_id, plant_id) Get daily and overall total information for the Mix system (duplicates some of the information from mix_info).

api.mix_system_status(mix_id, plant_id) Get instantaneous values for Mix system e.g. current import/export, generation, charging rates etc.

api.mix_detail(mix_id, plant_id, timespan=<0=hour, 1=day, 2=month>, date) Get detailed values for a timespan, the API call also returns totals data for the same values in this time window

api.dashboard_data(plant_id, timespan=<0=hour, 1=day, 2=month>, date) Get dashboard values for a timespan, the API call also returns totals data for the same values in this time window. NOTE: Many of the values on this API call are incorrect for 'Mix' systems, however it still provides some accurate values that are unavailable on other API calls.

api.storage_detail(storage_id) Get detailed data on storage (battery).

api.storage_params(storage_id) Get a ton of info on storage (More info, more convoluted).

api.storage_energy_overview(plant_id, storage_id) Get the information you see in the "Generation overview".

api.get_plant_settings(plant_id) Get the current settings for the specified plant

api.update_plant_settings(plant_id, changed_settings, current_settings) Update the settings for a plant to the values specified in the dictionary, if the current_settings are not provided it will look them up automatically using the get_plant_settings function - See 'Plant settings' below for more information

api.update_mix_inverter_setting(serial_number, setting_type, parameters) Applies the provided parameters (dictionary or array) for the specified setting on the specified mix inverter; see 'Inverter settings' below for more information

api.update_ac_inverter_setting(serial_number, setting_type, parameters) Applies the provided parameters (dictionary or array) for the specified setting on the specified AC-coupled inverter; see 'Inverter settings' below for more information

Variables

Some variables you may want to set.

api.server_url The growatt server URL, default: 'https://server-api.growatt.com/'

Note

This is based on the endpoints used on the mobile app and could be changed without notice.

Initialisation

The library can be initialised to introduce randomness into the User Agent field that is used when communicating with the servers.

This has been added since the Growatt servers started checking for the presence of a User-Agent field in the headers that are sent.

By default the library will use a pre-set User-Agent value which identifies this library while also appearing like an Android device. However, it is also possible to pass in parameters to the intialisation of the library to override this entirely, or just add a random ID to the value. e.g.

api = growattServer.GrowattApi() # The default way to initialise

api = growattServer.GrowattApi(True) # Adds a randomly generated User ID to the default User-Agent

api = growattServer.GrowattApi(False, "my_user_agent_value") # Overrides the default and uses "my_user_agent_value" in the User-Agent header

Please see the user_agent_options.py example in the examples directory if you wish to investigate further.

Examples

The examples directory contains example usage for the library. You are required to have the library installed to use them pip install growattServer. However, if you are contributing to the library and want to use the latest version from the git repository, simply create a symlink to the growattServer directory inside the examples directory.

Plant Settings

The plant settings function(s) allow you to re-configure the settings for a specified plant. The following settings are required (and are therefore pre-populated based on the existing values for these settings)

• plantCoal - The formula used to calculate equivalent coal usage
• plantSo2 - The formula used to calculate So2 generation/saving
• accountName - The username that the system is assigned to
• plantID - The ID of the plant
• plantFirm - The 'firm' of the plant (unknown what this relates to - hardcoded to '0')
• plantCountry - The Country that the plant resides in
• plantType - The 'type' of plant (numerical value - mapped to an Enum)
• plantIncome - The formula used to calculate money per kwh
• plantAddress - The address of the plant
• plantTimezone - The timezone of the plant (relative to UTC)
• plantLng - The longitude of the plant's location
• plantCity - The city that the plant is located in
• plantCo2 - The formula used to calculate Co2 saving/reduction
• plantMoney - The local currency e.g. gbp
• plantPower - The capacity/size of the plant in W e.g. 6400 (6.4kw)
• plantLat - The latitude of the plant's location
• plantDate - The date that the plant was installed
• plantName - The name of the plant

The function update_plant_settings allows you to provide a python dictionary of any/all of the above settings and change their value.

Inverter Settings

NOTE: The inverter settings function appears to only work with 'mix' systems based on the API call that it makes being specific to 'mix' inverters

The inverter settings function(s) allow you to change individual values on your inverter e.g. time, charging period etc. From what has been reverse engineered from the api, each setting has a setting_type and a set of parameters that are relevant to it.

Known working settings & parameters are as follows (all parameter values are strings):

• Time/Date
  • type: pf_sys_year
  • params:
    • param1: datetime in format: YYYY-MM-DD HH:MM:SS
• Hybrid inverter AC charge times
  • function: api.update_mix_inverter_setting
  • setting type: mix_ac_charge_time_period
  • params:
    • param1: Charging power % (value between 0 and 100)
    • param2: Stop charging Statement of Charge % (value between 0 and 100)
    • param3: Allow AC charging (0 = Disabled, 1 = Enabled)
    • param4: Schedule 1 - Start time - Hour e.g. "01" (1am)
    • param5: Schedule 1 - Start time - Minute e.g. "00" (0 minutes)
    • param6: Schedule 1 - End time - Hour e.g. "02" (2am)
    • param7: Schedule 1 - End time - Minute e.g. "00" (0 minutes)
    • param8: Schedule 1 - Enabled/Disabled (0 = Disabled, 1 = Enabled)
    • param9: Schedule 2 - Start time - Hour e.g. "01" (1am)
    • param10: Schedule 2 - Start time - Minute e.g. "00" (0 minutes)
    • param11: Schedule 2 - End time - Hour e.g. "02" (2am)
    • param12: Schedule 2 - End time - Minute e.g. "00" (0 minutes)
    • param13: Schedule 2 - Enabled/Disabled (0 = Disabled, 1 = Enabled)
    • param14: Schedule 3 - Start time - Hour e.g. "01" (1am)
    • param15: Schedule 3 - Start time - Minute e.g. "00" (0 minutes)
    • param16: Schedule 3 - End time - Hour e.g. "02" (2am)
    • param17: Schedule 3 - End time - Minute e.g. "00" (0 minutes)
    • param18: Schedule 3 - Enabled/Disabled (0 = Disabled, 1 = Enabled)
• AC-coupled inverter AC charge times
  • function: api.update_ac_inverter_setting
  • setting type: spa_ac_charge_time_period
  • params:
    • param1: Charging power % (value between 0 and 100)
    • param2: Stop charging Statement of Charge % (value between 0 and 100)
    • param3: Schedule 1 - Start time - Hour e.g. "01" (1am)
    • param4: Schedule 1 - Start time - Minute e.g. "00" (0 minutes)
    • param5: Schedule 1 - End time - Hour e.g. "02" (2am)
    • param6: Schedule 1 - End time - Minute e.g. "00" (0 minutes)
    • param7: Schedule 1 - Enabled/Disabled (0 = Disabled, 1 = Enabled)
    • param8: Schedule 2 - Start time - Hour e.g. "01" (1am)
    • param9: Schedule 2 - Start time - Minute e.g. "00" (0 minutes)
    • param10: Schedule 2 - End time - Hour e.g. "02" (2am)
    • param11: Schedule 2 - End time - Minute e.g. "00" (0 minutes)
    • param12: Schedule 2 - Enabled/Disabled (0 = Disabled, 1 = Enabled)
    • param13: Schedule 3 - Start time - Hour e.g. "01" (1am)
    • param14: Schedule 3 - Start time - Minute e.g. "00" (0 minutes)
    • param15: Schedule 3 - End time - Hour e.g. "02" (2am)
    • param16: Schedule 3 - End time - Minute e.g. "00" (0 minutes)
    • param17: Schedule 3 - Enabled/Disabled (0 = Disabled, 1 = Enabled)

The three functions update_mix_inverter_setting, update_ac_inverter_setting, and update_inverter_setting take either a dictionary or an array. If an array is passed it will automatically generate the paramN key based on array index since all params for settings seem to used the same numbering scheme.

Settings Discovery

The settings for the Plant and Inverter have been reverse engineered by using the ShinePhone Android App and the NetCapture SSL application together to inspect the API calls that are made by the application and the parameters that are provided with it.

Disclaimer

The developers & maintainers of this library accept no responsibility for any damage, problems or issues that arise with your Growatt systems as a result of its use.

The library contains functions that allow you to modify the configuration of your plant & inverter which carries the ability to set values outside of normal operating parameters, therefore, settings should only be modified if you understand the consequences.

To the best of our knowledge only the settings functions perform modifications to your system and all other operations are read only. Regardless of the operation:

The library is used entirely at your own risk.