diff --git a/drivers/SmartThings/zigbee-switch/src/st/zigbee/defaults/powerMeter_defaults/instantaneous_demand_handler.lua b/drivers/SmartThings/zigbee-switch/src/st/zigbee/defaults/powerMeter_defaults/instantaneous_demand_handler.lua
new file mode 100644
index 0000000000..49e55656db
--- /dev/null
+++ b/drivers/SmartThings/zigbee-switch/src/st/zigbee/defaults/powerMeter_defaults/instantaneous_demand_handler.lua
@@ -0,0 +1,34 @@
+-- Copyright 2026 SmartThings, Inc.
+-- Licensed under the Apache License, Version 2.0
+
+local capabilities = require "st.capabilities"
+local constants = require "st.zigbee.constants"
+local log = require "log"
+
+--- Default handler for InstantaneousDemand attribute on SimpleMetering cluster
+---
+--- This converts the Int24 instantaneous demand into the powerMeter.power capability event.  This will
+--- check the device for values set in the constants.SIMPLE_METERING_MULTIPLIER_KEY and
+--- constants.SIMPLE_METERING_DIVISOR_KEY to convert the raw value to the correctly scaled values.  These
+--- fields should be set by reading the values from the same cluster
+---
+--- @param driver ZigbeeDriver The current driver running containing necessary context for execution
+--- @param device st.zigbee.Device The device this message was received from containing identifying information
+--- @param value st.zigbee.data_types.Int24 the value of the instantaneous demand
+--- @param zb_rx st.zigbee.ZigbeeMessageRx the full message this report came in
+return function(driver, device, value, zb_rx)
+  local raw_value = value.value
+  --- demand = demand received * Multipler/Divisor
+  local multiplier = device:get_field(constants.SIMPLE_METERING_MULTIPLIER_KEY) or 1
+  local divisor = device:get_field(constants.SIMPLE_METERING_DIVISOR_KEY) or 1
+
+  if divisor == 0 then
+    log.warn_with({ hub_logs = true }, "Simple metering divisor is 0; using 1 to avoid division by zero")
+    divisor = 1
+  end
+
+  raw_value = raw_value * multiplier/divisor
+
+  local raw_value_watts = raw_value * 1000
+  device:emit_event_for_endpoint(zb_rx.address_header.src_endpoint.value, capabilities.powerMeter.power({value = raw_value_watts, unit = "W" }))
+end