CarsRegenerative braking: what energy it recovers and how it works
What energy regenerative braking transforms, how it is stored in the battery, and what the examples from Porsche and Dacia show.
Read articleAutomotive glossary
Regenerative Braking
The recovery of some of the energy of motion by an electric machine acting as a generator during deceleration.
Reviewed 05.10.2026 · Version 2 · Scope: General
How to interpret it
The recovered energy can be stored in the battery. The amount and available intensity depend on the system and its conditions; not all the energy used during a trip is recovered.
Example
In an energy example, recovering some of the energy used to accelerate does not eliminate losses in the system or make the trip consume no energy.
Why it matters to you
Helps explain why deceleration is part of the energy balance and how to interpret descriptions of electric driving.
Common points of confusion
It does not always replace the friction braking system. Energy recovery and unlimited range are incompatible concepts.
Documentary sources
Electricity Basics U.S. Department of Energy · 2026-10-05
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