I use the following code to store values in RTC memory of the ESP in case of power down.
...
esp8266:
restore_from_flash: true
preferences:
flash_write_interval: 24h
globals:
- id: total_pluses
type: int
restore_value: True
...
Is there a way to store data to the RTC memory on demand just before I manually disconnect the device from the power? supply.