The first international conference on a planned experimental nuclear fusion plant ended Thursday night in Toronto with a second conference slated to be held in Tokyo in January, Japanese officials said.

Government officials from Japan, Russia, Canada and Europe discussed the framework of an international accord to build and operate the International Thermonuclear Experimental Reactor at the two-day conference.

Participating countries aim to reach a final agreement on the site of the plant and allocation of construction costs by the end of next year, according to the officials.

The reactor will generate electricity through nuclear fusion, using a method similar to how energy is produced by the sun.