The SMA Fuel Save Controller is the central component of the SMA solution for hybrid systems consisting of photovoltaics and fossil-fuelled gensets. It ensures the demand-oriented control of the photovoltaic system dependent on the plant’s load and genset characteristics. Thus the gensets operate in a reliable and stable state even with high levels of photovoltaics.
Together with the Fuel Save Controller, SMA inverters fulfil comprehensive grid management functions within the system. The SMA hybrid system technology is scalable on a modular basis and can be adapted to the specific requirements of the power plant. Furthermore, the Fuel Save Controller offers the opportunity to monitor the hybrid system remotely. This assures optimum energy management for the plant operator and guarantees efficient and flexible system performance.

Ease of use

  • Several available operation modes allow for easy bolt-on integration with genset systems
  • Exchange realtime data with other devices and systems through the standard Modbus® communication protocol


  • Automatic regulation of PV power according to load and state of gensets
  • Reverse power protection functionality
  • Optimisation and communication features available


  • Plant and system parameters are fully configurable
  • Modular design allows for most system setups
  • PLC-based modular system with proven industrial grade components


  • Supports future system expansion (for example, increase in the amount of PV)
  • Prepared for future integration of energy storage systems

Technical Description - SMA FUEL SAVE CONTROLLER (FSC11CONT) Modbus® Interface

  • Type: Technical information
  • Language: International
  • Number: FSC11_Modbus-TB-en-10
  • Version: 1.0

Manufacturer’s Certification Statemant

  • Type: Manufacturers Declaration
  • Language: English (US)
  • Number: SMAManufactCert9Dec2014
  • Version:



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