Frankly, I think that's more of a Linux problem than a Wine one. You're right that Linux is overall worse at power management than OSX or Windows, but Wine itse

Frankly, I think that's more of a Linux problem than a Wine one. You're right that Linux is overall worse at power management than OSX or Windows, but Wine itself is extremely light on any OS it supports. On a resource-constrained machine (eg. >2gb RAM), I'd imagine that Wine would be less resource-intensive than native modern Windows would.