⚡ SMART ELECTRICITY BILL SAVER & REAL-TIME POWER MONITOR
An Advanced IoT Energy Monitoring System
By Yarana IoT Guru
🚀 INTRODUCTION
Electricity consumption is increasing rapidly in homes, offices, and industries.
However, most users lack visibility into:
- Real-time power consumption
- Appliance-level load impact
- Estimated electricity bill before month-end
- Overload risk and energy wastage
Traditional electricity meters only show total units consumed.
They do not provide real-time analytics or energy insights.
To solve this problem, we developed:
🔥 Smart Electricity Bill Saver & Real-Time Power Monitor
An IoT-based intelligent energy monitoring system built using ESP32 and PZEM-004T
that tracks real-time Voltage, Current, Power, Energy (kWh), Frequency, and Power Factor,
and displays it instantly on a Live WebSocket Dashboard.
🔥 PROBLEM STATEMENT
❌ No real-time monitoring
❌ Unexpected high electricity bills
❌ No overload visibility
❌ No consumption analytics
❌ No live dashboard access
Energy waste continues silently.
💡 SOLUTION OVERVIEW
This system provides:
✔ Real-time Voltage Monitoring
✔ Real-time Current Monitoring
✔ Live Power (Watt) Calculation
✔ Energy (kWh) Tracking
✔ Frequency & Power Factor Monitoring
✔ WebSocket-based Live Dashboard (No Refresh)
✔ ESP32 Embedded Web Server
✔ LCD Local Display Output
✔ Scalable IoT Architecture
🧰 REQUIRED HARDWARE
1️⃣ ESP32 Development Board
Role:
- WiFi Connectivity
- Data Processing
- Embedded Web Server Hosting
- Real-Time WebSocket Communication
2️⃣ PZEM-004T v3.0 Energy Monitor
Role:
- Voltage Measurement
- Current Measurement
- Power Calculation
- Energy Tracking
- Frequency Detection
- Power Factor Monitoring
3️⃣ 5V SMPS Power Supply
Provides stable power to ESP32.
4️⃣ 16×2 I2C LCD Display
Displays real-time readings locally.
🔌 COMPLETE WIRING DETAILS
ESP32 ↔ PZEM-004T
GPIO16 → TX (PZEM)
GPIO17 → RX (PZEM)
5V → VCC
GND → GND
CT Coil:
Install ONLY on AC phase wire.
⚠ Follow proper AC safety precautions.
LCD (I2C):
SDA → GPIO32
SCL → GPIO33
VCC → 5V
GND → GND
🧠 SOFTWARE & TECHNOLOGY STACK
- Arduino IDE
- ESP32 Core
- PZEM004Tv30 Library
- WebServer Library
- WebSocketsServer Library
- Chart.js (Frontend Live Charts)
- HTML + CSS + JavaScript Dashboard
⚙️ WORKING LOGIC
1️⃣ ESP32 connects to WiFi
2️⃣ Reads voltage, current, power & energy from PZEM
3️⃣ Filters invalid (NaN) values
4️⃣ Sends JSON data via WebSocket
5️⃣ Dashboard updates instantly (No page refresh)
6️⃣ LCD shows IP initially, then real-time readings
📊 DASHBOARD FEATURES
✔ Real-Time Voltage Display
✔ Live Current Tracking
✔ Dynamic Power Chart
✔ Energy (kWh) Monitoring
✔ Frequency Graph
✔ Power Factor Display
✔ Dual Chart System (Power/Current & Voltage/Frequency)
✔ Mobile Responsive UI
✔ Professional Dark Theme Interface
🏠 APPLICATIONS
- Smart Homes
- Industrial Load Monitoring
- Office Energy Tracking
- Solar Energy Systems
- Energy Audit Projects
- Smart Building Automation
💼 BUSINESS OPPORTUNITY
✔ Smart Home Commercial Product
✔ IoT Energy Monitoring Device
✔ Energy Audit Service Model
✔ Rental Property Monitoring
✔ Industrial Energy Analytics
🎥 FULL TUTORIAL VIDEO
Watch Complete Step-by-Step Build:
https://youtu.be/THy6PcdtL04
🏁 CONCLUSION
This ESP32 + PZEM-004T IoT Energy Monitoring System helps:
✔ Reduce electricity waste
✔ Monitor real-time consumption
✔ Analyze load behavior
✔ Improve energy efficiency
✔ Create scalable smart energy solutions
A practical and scalable IoT-based energy management system
designed and developed by Yarana IoT Guru.
📞 PROJECT SUPPORT & COLLABORATION
Empowering IoT Innovation | ESP32 | Home Automation | Smart Solutions
For:
- IoT Project Development
- Custom PCB Design
- Industrial Automation Solutions
- College Workshops & Training
- Bulk IoT Product Development
- Freelance Embedded Development
📩 Email: contact@yaranaiotguru.in
📲 WhatsApp: +91 70527 22734
🌐 Website: https://yaranaiotguru.in
📁 GitHub: https://github.com/YaranaIotGuru
Yarana IoT Guru
Building Practical IoT Solutions for Real-World Problems
