Transactive Energy Peer Node Kit with ESP32 + LED
Transactive Energy Peer Node Kit with ESP32: Build a Peer-to-Peer Energy Marketplace
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine a neighbourhood where houses trade electricity amongst themselves — buying when cheap, selling excess when prices surge. With this advanced kit, you’ll build a three-node transactive energy network using ESP32 microcontrollers, INA219 power monitors, and MQTT messaging to negotiate real-time energy deals between solar-powered peers. Each node monitors its own solar generation, battery state, and load, then bids in a live marketplace to maximise efficiency.
What You'll Build
You’ll construct three standalone energy nodes, each with solar input, battery storage, and an ESP32 that publishes its energy surplus or deficit to an MQTT broker. The nodes run a negotiation algorithm — the cheapest available energy automatically sells to the highest bidder, mirroring a real energy exchange. One node features an OLED display showing trading status, and you can log all transactions for later analysis of distributed grid behaviour.
What You'll Learn
- Implement MQTT publish‑subscribe for real‑time multi‑node IoT communication
- Design a distributed energy trading algorithm with price negotiation logic
- Interface INA219 current sensors to measure solar generation and battery power precisely
- Build a multi‑node solar‑battery system with TP4056 charging and LM2596 voltage regulation
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 3 |
| INA219 | 3 |
| Solar Panel 6V 2W | 2 |
| TP4056 Module | 3 |
| 18650 Cell | 6 |
| LM2596 Buck Converter | 3 |
| 0.96in OLED | 1 |
| 100nF Caps | 20 |
| PCB Prototype Board | 3 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Tailored for final‑year B.Tech (EEE/ECE) students building transactive energy prototypes, Smart India Hackathon teams tackling smart grid challenges, and researchers at IITs, NITs, or VIT experimenting with decentralised energy markets. It assumes prior experience with ESP32 programming and MQTT concepts.
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.
What if I get stuck during the build?
Scan the QR code to launch the AI companion, which can debug your code, check wiring, and suggest fixes. If you still need help, our WhatsApp support line is available for direct assistance.
How do I set up the MQTT broker for the nodes to communicate?
You can use a free cloud broker like HiveMQ or run Mosquitto on your laptop. The AI companion will guide you through configuring the ESP32s with the broker’s address and the topic structure for trading messages.
Can I scale this to more than three nodes?
Yes, the trading algorithm is node‑agnostic. Additional ESP32 boards (sold separately) can join the network by following the same MQTT naming scheme, and the negotiation scales automatically.
Do I need prior coding experience to build this kit?
This is an advanced kit. You should be comfortable with Arduino IDE, basic C++ networking, and MQTT concepts. The AI companion provides full code walkthroughs, but foundational knowledge is required.
ESP32 negotiates energy price with peer nodes via MQTT. Buys cheap, sells excess based on real-time supply.
What's in this kit
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items