For Hubitat mirror a power meter without exposing a switch

hubitat-power-meter-mirror.groovy

definition(
    name: "Power Meter Mirror",
    namespace: "bubblelabs",
    author: "Dale Myszewski",
    description: "Mirrors only the power attribute from a selected device to a virtual device.",
    category: "Convenience",
    installOnOpen: true,
    singleInstance: false,
    iconUrl: "https://raw.githubusercontent.com/hubitat/HubitatPublic/master/hubitat.ico"
)

preferences {
    section("Select Power Meter Device") {
        input "sourceDevice", "capability.powerMeter", title: "Source Device", required: true, multiple: false
    }
    section("Select Virtual Device") {
        input "virtualDevice", "capability.powerMeter", title: "Virtual Device", required: true, multiple: false
    }
}

def installed() {
    initialize()
}

def updated() {
    unsubscribe()
    initialize()
}

def initialize() {
    if (sourceDevice && virtualDevice) {
        subscribe(sourceDevice, "power", powerHandler)
    }
}

def powerHandler(evt) {
    log.debug "Updating virtual device power: ${evt.value} W"
    virtualDevice.sendEvent(name: "power", value: evt.value, unit: "W")
}