PowerShell: Report on size of first and second stage recycle bin for SP Online

You can use this script to get report on size of first and second stage recycle bin for all site collections. It does not include hidden site collections (OneDrive, Office365 Groups).

function Get-sizeSiteCollections 
{ 
 param ($SiteUrl,$UserName,$Password) 

$loadInfo1 = [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client")
$loadInfo2 = [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client.Runtime")
$loadInfo3 = [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client.UserProfiles")
#$sstr = ConvertTo-SecureString -string $AdminPass -AsPlainText -Force
$Securepass = ConvertTo-SecureString $Password -AsPlainText -Force
$context = New-Object Microsoft.SharePoint.Client.ClientContext($SiteUrl)

$context.Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($UserName,$Securepass)
$site = $context.Site
$recycleBinCollection = $site.RecycleBin
$context.Load($site)
$context.Load($recycleBinCollection)
$context.ExecuteQuery()
$FSFiles=@()
$SSFiles=@()

foreach($item in $recycleBinCollection){
        if($item.itemState -eq "FirstStageRecycleBin"){
          
          if($item.Size)
          {
          $FSSize+=$item.Size
          }
            
        }
        else 
        {
        if($item.Size)
          {
          $SSSize+=$item.Size
          }
        }
}
If($FSSize -eq $null)
{
$FSSize ="Empty"
}
Else
{
$FSSize=$FSSize/1MB
}
If($SSSize -eq $null)
{
$SSSize ="Empty"
}
Else
{
$SSSize=$SSSize/1MB
}

Write-Host "Recyle bin size  Of:"$SiteUrl -ForegroundColor Yellow
Write-Host "---------------------" -ForegroundColor Red
Write-Host "First Stage Recyle bin Total size(MB)  Of ="$FSSize   -ForegroundColor Cyan
Write-Host "Second Stage Recyle bin Total size(MB)  Of ="$SSSize -ForegroundColor Cyan
Write-Host "---------------------" -ForegroundColor Green
$FSSize=$null
$SSSize=$null
  }

  function Get-SPOALLSiteCollections 
{ 
    param ($SiteUrl,$UserName,$Password) 
    
                
      $loadInfo1 = [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client")
      $loadInfo2 = [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client.Runtime")
      Add-Type -Path "C:\Program Files\SharePoint Client Components\16.0\Assemblies\Microsoft.Online.SharePoint.Client.Tenant.dll" 

        $Securepass = ConvertTo-SecureString $Password -AsPlainText -Force
        $context = New-Object Microsoft.SharePoint.Client.ClientContext($sSiteUrl)  
        $context.Credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($UserName, $Securepass)   
        $Tenant= New-Object Microsoft.Online.SharePoint.TenantAdministration.Tenant($context) 
        $SiteCollections=$Tenant.GetSiteProperties(0,$true) 
        $context.Load($SiteCollections) 
        $context.ExecuteQuery() 
         
       foreach($SiteCollection in $SiteCollections)
        {             
         Get-sizeSiteCollections  -SiteUrl $SiteCollection.Url -UserName $UserName -Password $Password
        } 
       
} 
 
#Required Parameters 
$sSiteUrl = "https://<tenantname>-admin.sharepoint.com/"  
$UserName = "admin@<tenantname>.onmicrosoft.com"  
$Password ="password"

Get-SPOALLSiteCollections -SiteUrl $sSiteUrl -UserName $UserName -Password $Password