Peak Load Demand Recorder Kit: Track Daily Power Peaks & Reduce Bills with ESP8266 and PZEM-004T

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Most electricity bills hurt because you never see when the load peaks—until now. This kit brings that invisible pattern to light. Over a week, it logs power consumption every 30 seconds, timestamps every reading with a real-time clock, and stores the data on a microSD card. The ESP8266 analyzes it all to reveal the exact time of day your demand spikes, giving you the insight to shift loads and save money. Whether you’re auditing a home, a school lab, or a small workshop, you’ll hold the numbers that explain your bill.

What You'll Build

A self-contained power monitor that clips onto any single-phase AC line. The PZEM-004T sensor grabs voltage, current, and power readings; the NodeMCU packages them into a CSV file on the microSD. After a week, you’ll open that file and instantly see the daily peak demand hour—the moment your electricity usage hits its maximum. Perfect for evaluating time-of-day tariffs or simply understanding when inefficiencies creep in.

What You'll Learn

• Wire the PZEM-004T energy sensor to measure AC parameters safely using a shunt
• Program the ESP8266 NodeMCU to read sensor data over Modbus RTU
• Record time-stamped measurements with the DS3231 real-time clock
• Analyze power consumption patterns to identify daily peak demand periods

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 11-12 students who need a strong physics or electronics project will find everything ready to document. B.Tech ECE/EEE undergraduates can use it for mini projects or Smart India Hackathon prototypes focused on energy management. ATL Tinkering Lab mentors appreciate the real-world data angle—it turns a hobby build into a serious load audit tool that speaks the language of electricity regulators.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.