Tokyo ? The government is set to begin discussions on a system that would allow domestic firms to buy and sell greenhouse gas-emission credits, The Yomiuri Shimbun has learned.

At a meeting of the foreign minister, environment minister, economy, trade and industry minister and chief cabinet secretary scheduled to be held in mid-August, the Environment Ministry is expected to submit a report prepared in conjunction with the Economy, Trade and Industry Ministry stating that there is a high likelihood a domestic credit-transfer system will be introduced in Australia and the United States, sources said.