Scope The activities of CIGRE Study Committee D1 concern the monitoring and evaluation of: • new and existing materials for electrotechnology, • high voltage and current test and measuring techniques, • diagnostic techniques and related knowledge rules, • those emerging technologies which may be expected to have a significant impact on the Electric Power System in the medium to long term. Said activities are focused mainly on transmission and distribution but emerging generation technologies will also be specifically considered. Within this scope the work of the Study Committee is principally scientific in nature and has as its main aim the provision of timely information on new developments and trends to other CIGRE Study Committees. Through its work the Study Committee strives to keep CIGRE fully aware of the evolution of materials and technologies relevant to its activities. Where the scope of SC D1 work overlaps that of other study committees, we will strive for good communication and co-operation, the co-ordination of all activities, and, where appropriate, joint activities. Such interactions will extend to all study committees.