Now, what would happen if our heat was unavailable. A major problem with the power grid shuts hydro down for millions of people during the dead of winter. Furnaces and wall heaters are unable to run so we resort to pulling out our camping stoves and the BBQ's for some extra heat. Some people may even start fires using unwanted books and shelves from around the house. The carbon monoxide from the fumes then kills thousands who don't know better. The wiser ones then huddle together wrapped in 20 pieces of clothing but still the cold nips at them from all sides. Hypothermia begins to set in and thousands of elderly folk pass away.
I could go on but hopefully you know what I mean. This scenario is far from impossible. I'm sure there's a few of you who have experienced one of the major blackouts over the last few years. Aging power grids coupled with a higher need for energy during hot and cold days easily leads to shortage of energy which sometimes results in major blackouts. Should this happen in the heart of a cold snap we would either need to hope for a warm front or for the power to come back on. If not, the chances of freezing to death or dying as a result of trying to keep warm is extremely high.