Throttle power logging

Configuration
1

Monitoring active power from a Shelly Plus 1PM Gen 2 and want a clean, integer-only representation (no decimals).

Connected via MQTT, shelly-scripts/scripts/mqtt-discovery-self.shelly.js at main · michal-bartak/shelly-scripts · GitHub

What I need is recorder logging control, not value manipulation:

Requirements

The displayed and logged value must always be the actual current reading, rounded to an integer.
Normal small fluctuations (±2 W or less) must never generate a recorder log entry.
Only when the power changes abruptly by more than 2 W (up or down) should Home Assistant write one log entry, for example:
Power L1 big change: 142 → 1000 W
Important

Do not want clamping, smoothing, averaging, or replacement of values.
Even large spikes or “wrong” readings must be shown and logged as is.

2

You would need to flash ESPHome to your Shelly.

You don’t mention which Shelly device you have but there are many Shelly device files for ESPHome, e.g. : Shelly EM | ESPHome Devices

Then you can apply custom filters in the device. Specifically round and delta filters. See: https://esphome.io/components/sensor/#sensor-filters

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Shelly Plus 1PM - Gen 2