F1 Hybrid System Changes Aim to Improve Racing
▼ Summary
– New F1 rules reduce the maximum energy recharge per lap to 7 MJ in qualifying, down from 8 MJ, to encourage drivers to be flat-out more often.
– The change addresses a problem where battery depletion during qualifying laps ruined the show by preventing flat-out fastest laps.
– In races, the previous energy rules created dangerous speed differentials of up to 70 km/h between cars with and without battery charge.
– The updated rules also increase the energy harvest rate during “super clipping” to 350 kW, up from 250 kW, which should limit this practice to 2–4 seconds per lap.
– Super clipping diverts engine power to charge the battery instead of driving the wheels, contributing to the problematic speed differences.
The upcoming Miami Grand Prix will introduce a significant technical adjustment to Formula 1’s hybrid power units, a change designed to enhance the on-track spectacle and safety. The sport’s governing body, the FIA, has moved to address a critical issue with the new-for-2026 powertrains. While these units feature more potent electric motors, their batteries can only deliver full power for a few seconds each lap. Once depleted, the electrical output drops by half until recharged, a situation that has negatively impacted qualifying by preventing drivers from pushing flat-out for an entire lap. In race conditions, this creates hazardous speed differences between cars with charged and depleted batteries, with gaps reaching up to 70 km/h.
To mitigate this, a new energy deployment limit takes effect in Miami. Previously, drivers could recharge and use up to 8 MJ of energy per lap from the battery pack, which stores 4 MJ. The revised regulations lower that ceiling to 7 MJ per lap during qualifying. This reduction means drivers have less total energy to manage, which should encourage more consistent, maximum-attack laps. The goal is to make the fastest qualifying lap a true, uninterrupted effort.
The change also alters how energy is recovered. The hybrid systems recharge through regenerative braking and a process called super clipping, where the internal combustion engine diverts power to run the electric motor as a generator. The core problem has been that every kilowatt used for super clipping is a kilowatt not driving the rear wheels, directly causing those large speed deficits. Furthermore, with no front-axle motor, energy harvesting from braking alone is limited.
The new rules aim to streamline this process. While the total usable energy is lower, the rate at which energy can be recovered via super clipping is increased. Cars will now be permitted to harvest at the full 350 kW, up from the 250 kW limit used in the first three race weekends. According to the FIA, this higher harvesting rate should condense the super-clipping phase to just two to four seconds per lap, minimizing the time drivers are significantly off the throttle and reducing the unpredictable speed variations that have complicated racing and overtaking.
(Source: Ars Technica)