The ESP32 has five low power modes. Read about different ESP32 deep sleep and other reduced power modes that facilitate IoT usage.
The First Release of ESP-WROOM-32 Module Datasheet
Deep Sleep & Other Power Modes
Current Consumption Measurement of Modules - ESP32-S3 - — ESP-IDF Programming Guide latest documentation
ESP32 Sleep Modes & Power Consumption in Each Mode
ESP32 power saving: modem and light sleep – 2 – Renzo Mischianti
ESP32 Deep Sleep and Other Low Power Optimizations
Various ESP32 Sleep Modes and How to put ESP32 in Deep Sleep Mode
ESP32 Power Mode – Phatiphat Thounthong
ESP32 Low Power Modes - The Engineering Projects