One of the annoyances of running as a non-admin on my computer is that I don't have the ability to change the power scheme on my machine. That's because administrative credentials are required to modify machine settings, and if you're a thoughtful admin then you'd rather have your users run as domain users and not local admins on their computers. I was interested to discover however that Microsoft has a workaround for this issue, and you can use Group Policy to create a policy setting that you can use to allow or prevent targeted users from changing their power settings. For more info about this, see this Knowledge Base article.
Mitch Tulloch is President of MTIT Enterprises, an IT content development company based in Winnipeg, Canada. Prior to starting his own company in 1998, Mitch worked as a Microsoft Certified Trainer (MCT) for Productivity Point International. Mitch is a widely recognized expert on Windows administration, networking and security and has written 14 books and over a hundred articles on various topics. He has been repeatedly awarded Most Valuable Professional (MVP) status by Microsoft for his outstanding contributions in supporting users who deploy Microsoft platforms, products and solutions. Mitch is also a professor at Jones International University (JIU) where he teaches graduate-level courses in Information Security Management (ISM) for their Masters of Business Administration (MBA) program. For more information see http://www.mtit.com.