Revolution premieres Monday night at 10pm. While it's always true that the premieres don't say much about a show's future prospects, it's even more true with Revolution since its premiere will have the benefit of premiering in a week where there's no original scripted 10pm competition on ABC and CBS. That will change the next week.
Several have suggested that Revolution will be our next Fringe or Chuck. We'll be delighted if that turns out to be the case but the odds are against it. Most new shows don't go on to get 5 seasons. For several reasons I think the better comparable is probably Terra Nova with the exception that I could definitely see Revolution lasting a full season like, say, The Event rather than only the 12 episodes Terra Nova lasted.
The good news for fans of the show is it's on NBC where starting out OK and then merely muddling along might be good enough for renewal.