$Report = @()

$VMs = get-vm -name itdtufin.nd.gov

$Datastores = Get-Datastore | select Name, Id

Get-VIEvent -Entity $VMs -MaxSamples ([int]::MaxValue) -ov x | 

$x | where {$_ -is [VMware.Vim.VmPoweredOnEvent] -or $_ -is [VMware.Vim.VmPoweredOffEvent]} -ov y| 

Group-Object -Property {$_.Vm.Name} | %{

  $lastPO = $_.Group | Sort-Object -Property CreatedTime -Descending | Select -First 1

  $vm = Get-VM -Name $_.Name

  $row = '' | select VMName,Powerstate,OS,Host,Cluster,Datastore,NumCPU,MemMb,DiskGb,PowerOFF

    $row.VMName = $vm.Name

    $row.Powerstate = $vm.Powerstate

    $row.OS = $vm.Guest.OSFullName

    $row.Host = $vm.VMHost.name

    $row.Cluster = $vm.VMHost.Parent.Name

    $row.Datastore = ($Datastores | where {$_.ID -match (($vm.Datastore | Select -First 1) | Select Value).Value} | Select Name).Name

    $row.NumCPU = $vm.NumCPU

    $row.MemMb = $vm.MemoryMB

    $row.DiskGb = ((($vm.HardDisks | Measure-Object -Property CapacityKB -Sum).Sum * 1KB / 1GB),2)

    $row.PowerOFF = $lastPO.CreatedTime

    $report += $row

}

$report | Sort Name | Export-Csv -Path "C:\XXXXX\Powered_Off_VMs.csv" -NoTypeInformation -UseCulture