Shouldn't matter for a good data center typically has a generator and some claim they can supply their own power from a few days to a week in the even of an emergency.
What they think they have and what they have can be two very different things, the outage I experienced was 10 days. Generators break, fuel issues, etc.. I was with a real deal big name outfit but they didn't have the goods to withstand a 10 day power outage. That's why I assume outages and consider the underlying infrastructure. Whoever is the squeaky wheel in an outage situation, that one will get the grease.