# ERS

/ˈɝz/ (US) · CEFR C2 · Noun

Source: https://englishreference.com/word/ers
Updated: 2026-05-10

## Definition

Stands for Energy Recovery System. A system in high-level car racing that captures energy when the car slows down. This energy is stored and then used later to give the car a temporary boost of speed.

For teachers: Abbreviation for Energy Recovery System. An automotive technology that recovers kinetic energy from braking or heat energy from exhaust gases to provide additional power. Typically used in Formula 1 to supplement the internal combustion engine.

## Examples

- The driver used the ERS to overtake on the straight.
- During the final laps, the engineer advised the driver to manage the ERS carefully to defend their position.
- Modern hybrid racing power units integrate ERS to improve thermal efficiency, converting energy that would otherwise be lost as heat into a deployable electrical boost.

## Usage notes

- Often functions as an initialism for Energy Recovery System; usually takes the definite article 'the' when referring to the system as a whole.

---

From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.