Regenerative braking is used in full hybrids to recover brake energy that helps recharge batteries and provide energy to stop the vehicle.  "Regen" braking delivers approximately 7 percent fuel efficiency across a range of driving conditions.

TRW Automotive's approach to regenerative braking is to offer modular braking systems for both hybrid and non-hybrid applications, including:

• Slip Control Boost (SCB) for larger SUVs.  This technology integrates electronic stability functionality with regenerative braking capabilities for hyrid or vacuumless high-pressure brake applications.
• Electronic Slip Control-Regenerative (ESC-R) is a modular system that adds a brake volume displacement simulator.  It also works seamlessly with hybrid and other alternative powertrains.  ESC-R is scalable across segments.