In order to conduct its business, JEMA has a wide range of committees that deal with many different fields, including the following: committees related to products for heavy electrical industry, industrial systems and equipment, home electrical appliances, nuclear power and new and renewable energy sources; committees for areas of concern that include all industries, such as the environment and technology; and committees for medium-sized companies and the financial aspects of corporate management. The committees are headed by steering committees, and there are various committees, expert committees, subcommittees, and working groups.
In order to conduct its business JEMA has eight departments and three branches.