The really major one is the only one that matters. If you are running a datacenter that needs to always be up and running, you're going to need backup power. A power grid that goes down once a decade for multiple weeks is far worse than one that goes down for 5 minutes once a week.

In Texas, if you support those in power with good enough donations, you can ensure that your site does not loose power when the decision is made on who to disconnect. So you can spend the money on back up power equipment, or in donations. Either way, it's going to cost to play.