HC3L+Spot Stop
Intelligent system for protecting your FVE from negative prices on the spot market and smart battery management. The system automatically stops export of surpluses during unfavorable purchase prices and ensures conditioning charging of the battery in winter for its long service life.
⚡🔌 HC3L + Spot Stop – Protection Against Negative Prices
HC3L + Spot Stop is an effective solution for owners of photovoltaic power plants who want full control over their surpluses .
This set uses the Fibaro HC3L control unit to monitor the spot market and automatically block energy export at moments when purchase prices are too low or negative .
This protects your wallet from unnecessary charges for electricity delivery to the grid.
💼 Commercial presentation
In today's era of dynamic energy prices, Spot Stop is an essential tool for every modern PV plant .
Instead of paying for sending surpluses to the grid (in case of negative prices), the system intervenes in time and stops the export .
In addition to financial protection, the set also takes care of the technical health of your system thanks to Battery Maintenance Mode, which prevents deep discharge and storage degradation during winter months.
🧠 Superior system and communication
The basis of the set is the control unit Fibaro Home Center 3 Lite (HC3L) .
The unit is connected via Wi-Fi and communicates with the inverter using the Modbus TCP protocol .
🧩 Software overlay (Package contents)
The set contains all the logic needed for safe and economical operation:
- QA Inverter: Provides real-time reading of production, consumption and battery status data.
- Spot Stop: Automated algorithm monitoring market prices and controlling grid transfers.
- Winter maintenance: Automatic battery charging from the grid in case of prolonged lack of sunlight.
⚙️ Key features
Safety and economy of operation
- Export stop: Protection against negative prices – the system stops transfers when it's not worth it.
- Optimization for smaller installations: HC3L represents an affordable and reliable brain for energy management.
- Battery protection: Automated processes to maintain battery capacity in winter.
- Remote monitoring: Complete overview of energy flows in a mobile app.
✨ Typical use
- Owners of PV plants on the spot market: Key protection for those who sell surpluses at current market prices.
- Winter storage protection: For systems that do not produce enough energy in winter to keep the battery charged.
- Smart Home foundation: Possibility of further expansion with additional energy management or control of lights, heating or shading.
🔌 Operating conditions and connectivity
- Inverter with support for Modbus TCP protocol.
- Internet connection via Wi-Fi to download prices from the spot market.
If your inverter does not support Modbus TCP (has only RS485), you need to purchase a communication kit:
- Modbus RTU LAN kit (Extension) – for cable connection.
- Modbus RTU Wi-Fi kit (Extension) – for wireless connection.
🧰 Set contents
- 1x Control unit HC3L
- Software licence (QA inverter, QA Spot Stop)
- Technical support for basic communication configuration.
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