Abstract
Ecotechnology, a new compound of ecology and technology, to develop sustainable human activities keeping good environment on the earth, is overlooked from the viewpoints of electrical materials and machines in power use. Life cycle assessment (LCA) indicates most of carbon dioxide gas during the lifetime of electric machines from resources to disposals comes from power consumption during the operation. Energy saving in four electric machines has been accelerated since the so-called top runner system started in 1997. New products and technologies on lower losses have been developed in electrical steel sheets while the amorphous transformers have had some market share of distribution transformers. This is a summery of the activities of the committee on magnetic materials in power use of which report will be published.
