SolarGridSync: IoT-Based Dual Power Monitoring and Intelligent Source Switching with Web Integration

This project demonstrates a smart energy management system that automatically monitors and switches between solar and grid power sources based on solar voltage availability. It uses an ESP32 microcontroller with ACS712 for current sensing, and voltage dividers for measuring solar, grid, and battery voltages.

The system intelligently powers the load from the solar source when available and switches to grid supply when solar power is insufficient. It also measures AC parameters like voltage, frequency, and power factor using the PZEM004T v3.0 module. All real-time data is displayed on a 16x2 LCD screen and is uploaded to ThingSpeak IoT cloud for remote monitoring through smartphones or PCs.

📲 Key Features:

• Auto switching between solar and grid power

• Real-time monitoring of:

  • Solar, Grid, and Battery voltages

  • Load power using fixed current

  • AC parameters: Voltage, Frequency, Power Factor via PZEM

• Live data updates on ThingSpeak

• Compatible with iPhone or any internet-connected device

• Can be used in home automation, rural energy management, or IoT labs