Smart Energy Sharing System Between Homes

Problem statement

Small rooftop solar systems sometimes generate excess energy while neighboring homes still rely on grid power, but there is no simple way to visualize or plan sharing.

Abstract

This project models a micro smart grid between two or more homes. Each home has an energy monitoring node that measures consumption and solar generation. Data is sent to a central server that calculates surplus or deficit and suggests possible energy sharing or credits. A dashboard visualizes energy flow between homes.

Components required

• Energy monitoring modules (current/voltage sensors)
• ESP32/NodeMCU at each house node
• Central server or Raspberry Pi
• Web dashboard (React/Chart.js)
• Wi-Fi network
• Test loads and mini solar setups

Block diagram

Working

Current and voltage sensors at each house feed data to ESP32 nodes which calculate power and send readings periodically to the central server via MQTT/HTTP. The server computes surplus or deficit per house and simulates virtual energy transfer or credits. The dashboard shows per-house usage, generation and possible sharing paths, demonstrating peer-to-peer energy trade.

Applications

• Smart microgrid concepts
• Community solar sharing models
• Research prototypes for energy markets
• Educational smart grid demo