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SAFT Renewable energy systems

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SAFT Renewable energy systems

Renewable energy systems will form an increasingly important part of the electricity networks of the future. Battery energy storage installations will therefore play a growing role in stand-alone, hybrid power and grid-connected installations.


Stand-alone applications include:

  • off-grid photovoltaic (PV) systems
  • wind turbines.

Large batteries are needed to provide energy storage (Wh) for long discharge periods of hours or days.

Hybrid power

Hybrid power applications include:

  • wind-hybrid systems
  • PV-generator systems.

Batteries with comparably less capacity, optimised for short but frequent discharges are used for:

  • peak power demands
  • bridging to diesel generator or fuel cell operation in the event of extended periods without sun or wind.


In grid-connected applications, the inherent variability especially of wind energy can destabilize weak grids. This is typically characterized by a lack of spinning reserve. In such high-voltage systems – ranging from hundreds of kW to several MW – batteries are used to:

  • stabilize wind generation and brige to other forms of generation
  • provide sufficient output stability and ramping control to make wind generation network-compatible.
  • make PV energy dispatchable (separation of time of generation and time of use)

Reliable energy storage without maintenance

PV and wind-powered systems are often installed in remote areas. In many cases they are accessible only by boat or helicopter in good weather.

Their batteries must:

  • require minimal maintenance
  • withstand daily shallow cycles and seasonal deep cycles
  • operate reliably in temperatures ranging from -30°C to +50°C.