Where does the Observatorys electricity come from?
Starting in the fall of 2007, the summit has been using “grid power”, which is transmitted from the valley in a buried cable along the Cog Railway tracks. For back-up purposes, the Mount Washington State Park crew maintains two large kerosene-fueled emergency generators which can provide power for the entire summit. Kerosene remains liquid and flows at very low temperatures making it a suitable liquid fuel to use on the often frigid summit.
