ABSTRACT
Natural hazards are among the top threats to the electricity supply security. The power grid loss may result in great direct/indirect impacts on other infrastructures and have potential to severely influence the people's health. Natural hazards have a potential to cause a physical damage to power grids. The failure scenario is predetermined by hazard type. The power grid response, in its turn, strongly depends on the physical vulnerabilities of its constituent assets, i.e. on their structural characteristics. The risks associated with different types of natural hazards are normally evaluated using different procedures leading to incomparability of results. Terrestrial hazards were the scope of various studies. World Economic Forum (WEF) develops a risk matrix on yearly basis in which top few risks are given in terms of likelihood and impact. Global risks are not strictly comparable across years, as definitions and the set of global risks have evolved with the new issues emerging on the 10-year horizon.
