Weather and climate impact overhead lines in many ways – wind and ice loads, storms, floods and temperature. Changing climatic conditions can affect the frequency, severity and distribution of extreme events that should be taken into account in the design.

The objective of this CEATI research was to prepare a state of the art report with recommendations for utilities, designers and operators of overhead lines on how those climatic changes can be taken into account for improved resiliency and more reliable design requirements for the electrical grid. The information includes literature reviews on climate implications for overhead lines, industry approaches to adaptation and utility experience, methods and procedures for improved design adaptations, and an assessment of future research needs to support improvements in estimating design loads, particularly in complex terrain.