2026 rules · Updated for 2026
Regenerative braking in F1 explained
How slowing the car can recharge its battery instead of wasting all kinetic energy as heat.
Quick answer
The MGU-K applies a controlled resisting torque during deceleration, converting part of the car's kinetic energy into electricity rather than dissipating all of it through the brake discs.
01
Energy conversion
A moving car contains kinetic energy. Friction brakes turn it into heat; regenerative braking redirects a permitted portion into electrical energy.
02
Why recovery varies
A full battery, low rear grip or a different braking phase can reduce useful harvesting. The car must remain stable while meeting the driver's requested deceleration.
03
The 2026 scale
With the MGU-K central to the new power unit, recovery rate and allocation across a lap become major performance variables.