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Solar Power (SolarEdge) and Smart Plug (D-Link W115) Automation (Work In Progress)

Overview

This Python script fetches real-time solar power data from the SolarEdge API and utilizes the information to manage the D-LINK W115 smart plug. The goal is to optimise leisure/device battery charging when solar output is high.

Without the addition of consumption monitoring to measure available power, this approach does have its downsides, but it's a start for those without access to realtime consumption data.

Note: "For a more manual approach, I've developed a Solar Production Forecast Advisor. This tool incorporates geography and panel orientation forecasts to notify residents about the optimal times of the day for using or charging electrical devices. See solarProductionAdvisor/README.md

Features

  • Solar Power Monitoring:

    • Fetches current solar power data from the SolarEdge API.
    • Logs data and status to a specified log file.

  • Smart Plug Automation:

    • Controls a smart plug based on the retrieved solar power information.
    • Adjusts the plug's state (on/off) according to predefined thresholds.

Configuration

  • Configure solar monitoring parameters in the config.py file, including API key and endpoint.
  • Customize smart plug settings, such as IP address, PIN code, and model, within the script.

Requirements

  • Python 3.x
  • Requests library for HTTP requests (pip install requests)
  • SolarEdge Solar System and access to monitoring API
  • D-LINK DSP W115 Smart Plug (other models may work with minor modifications)
  • Local connectivity to the smart plug (e.g., same WiFi network)

Usage

  1. Obtain API Key:

    • See here for info on how to get a SolarEdge API key. Configure it in config.py to give the script access to your current solar output.

  2. Configure Smart Plug:

    • See the guide here for instructions on how to configure the smart plug. Use PIN only method.
    • Adjust smart plug parameters in 'config.py' , including IP, PIN, and model.

  3. Schedule the Script:

    • Schedule the execution of solar_power_query.py to fetch solar power data and control the smart plug. The server hosting the script must have local connectivity to the D-LINK smart plug.

    For example, use cron to run the script every 5 minutes:

     */30 8-19 * * * /usr/bin/python3 /home/pi/solar-smart-plug/solarsmartplug.py

Notes

  • This integration is intended to be run on the same network as the D-Link smart plug. Certain SSL checks in the dspW245 module have been bypassed to allow direct access to the D-LINK smart plug via a local connection, preventing the need for a home automation cloud service. Attempting to connect over the internet is not recommended for security reasons. See lines 199-206 in dspW245.py for code changes.
  • Review and adjust the power threshold in config.py to control when the smart plug is turned on/off.

Acknowledgments

This project is built upon a modified version of the dspW245 project by Jonas Johansson. The original project provides a Python interface for interacting with DSP-W245 smart plugs. Many thanks to Jonas Johansson for most of the hard work.