Japan's major annual electronics show involving more than 300 companies opened Tuesday, with the spotlight on cutting-edge technologies designed to achieve carbon neutrality.

As was the case last year, organizers decided to hold the Combined Exhibition of Advanced Technologies online as a precaution against the coronavirus. The event through Friday, under the theme of "Toward Society 5.0 with the New Normal," is accessible by the public with pre-registration.

Rechargeable batteries to store renewable energy and carbon recycling technologies are among exhibited products that may help Japan and other countries reach the goal of net zero carbon emissions in the next several decades.