Disable “Turn off monitor”

I have about 150 computers logged on as the same user name and password.
I?d like to change a Windows setting (?Turn off monitor? to Never) on all those computers.

I am thinking of elevating the user to the power user and then change the setting on each computer, one at a time. If elevating the user can be done using AD or Group Policy, the whole process would be easier.

I?d like your suggestions or ideas.

Thank you.