Japan to aim for 15 percent carbon cut from 2005 level: NHK
Aso's government has been looking at six options for how and how much to cut emissions by 2020 in Japan, ranging from minus 4 percent to minus 30 percent from 2005 levels.
A 15 percent cut from 2005 would be a slightly bigger cut that the minus 14 percent option -- equivalent to minus 7 percent from 1990 -- that media had reported as the most likely scenario.
Aso is set to hold a news conference to announce Japan's 2020 greenhouse gas emissions reduction target at 5 a.m. EDT.
(Reporting by Yoko Kubota)