Climate factor Risk description Impact mechanism
Extreme weather #colspan# #colspan#
Increased velocity of winds and frequency of dangerous phenomena (gusts, windflaws, tornadoes, etc.)    

Exposure of network infrastructure due to non-compliance of conditions with design conditions

Accidents on power lines, related to vibration, subspan oscillation, wire overlapping and wirebreak, as well as damages to towers and metal structures
Increased frequency of strong icing, accumulation of wet snow #rowspan# Accidents on power lines, related to wire slackness, wire overlapping and wirebreak as well as damages to towers and metal structures
Extreme rainfall and flooding — Exposure of network infrastructure to floods; — High water cut, relief deformation Flooding of ground infrastructure, damage to equipment. High frequency of landslides, destruction of foundations of buildings and structures
High frequency and intensity of extreme heat, incl. urban heat islands effect — Exposure of network infrastructure due to non-compliance of conditions with design conditions; — Exposure of employees to weather factors — Accidents on power lines, related to wire slackness; damage to transformer substations; — Higher mortality, morbidity and loss of productivity among employees
Irreversible climate processes #colspan# #colspan#
Degradation of permafrost High exposure of network infrastructure structures and communications Reduction of load-bearing capacity of the foundations of buildings and structures, incl. power line towers