Doing Script Automation Securely (encryp password) Connect-EqlGroup

Is there a better way to initiate a powershell session with a Dell storage group other than:

Connect-EqlGroup -GroupAddress 1.1.1.1 -Credential (Get-Credential)

I am trying to think of a simple way to report on volume size and pool size throughout the day and spit the info out to a mailbox.  This can be done via powershell scripting and scheduled tasks, but....

My concerns are:

1. The powershell user must be a group admin, rather than a read-only account that can report via powershell.  Therefore I am concerned about keeping this account secure.
2. The password must be entered manually (not an option for automation), or placed in the script in plain text (very insecure).

Any suggestions?