Ravish, we are based out of Bangalore and so far we never had 12 hours a day power outage. Max we have faced 4-5 hours of power outage for couple of occasions in summer. In general power outage is not more than an hour or two in a week, which is manageable with UPS & Generator combo.

From Hertzer pricing page, add 1Gbit port cost of 50$ a month, data transfer charges etc would make it much more expensive. Considering our usage, we felt private infra would be a better choice.