PowerShell script to generate a report on all Power BI workspaces and groups in your Microsoft 365 tenant

#Install-Module AzureAD
#Install-Module MicrosoftPowerBIMgmt
#Connect-PowerBIServiceAccount
#Connect-AzureAD

$workspaces = Get-PowerBIWorkspace -Scope Organization -All
$wslist = @()
foreach ($ws in $workspaces) {
    $ws
    $owners = $null
    if ($ws.State -eq 'Active') { 
        if ($ws.Type -eq 'Workspace') {
            $u = $ws.Users | Where-Object AccessRight -eq 'Admin' | Select-Object UserPrincipalName
            Write-Host $u
            $owners = $u.UserPrincipalName -join ","
        }
        elseif ($ws.Type -eq 'Group') {
            $go = Get-AzureADGroupOwner -ObjectId $ws.ID 
            $owners = $go.UserPrincipalName -join "," 
        }
    } 
    $item = [ordered] @{
        Id = $ws.ID
        Name = $ws.Name
        Type = $ws.Type
        State = $ws.State
        IsReadOnly = $ws.IsReadOnly
        IsOrphaned = $ws.IsOrphaned
        IsOnDedicatedCapacity = $ws.IsOnDedicatedCapacity
        CapacityId = $ws.CapacityId
        Owners = $owners
    }
    $u = new-object PSObject -Property $item
    $wslist += $u
}
$wslist | Export-Csv .\PowerBI-Workspaces.csv -NoTypeInformation