BEIJING - China's stocks rose most in four weeks on Sept 21 with the benchmark Shanghai Composite Index up 2.66 percent to close at 2512.96 points.

The Shenzhen Component Index gained 2.93 percent, or 312.55 points, to finish at 10,991.85.

Combined turnover on the two bourses jumped to 159.87 billion yuan ($24.98 billion) from 90.8 billion yuan the previous trading day.

Gainers outnumbered losers by 930 to 8 in Shanghai, and by 1,340 to 10 in Shenzhen.

New energy shares rallied Sept 21 after the China Securities Journal reported that the country could resume approvals for nuclear power projects.

Dongfang Electric Corp rose 7.06 percent to close at 23.05 yuan per share, while Lanzhou Great Wall Electrical Co. jumped by the 10-percent daily limit to reach 8.57 yuan per share.

Coal shares rose broadly with the entire sector up 4.5 percent, partly due to reports that soaring coal prices are likely to lead to power shortages in many of the country's provinces this winter.

Yanzhou Coal Mining Co, one of the country's leading coal producers, gained 6.24 percent to hit 28.59 yuan per share, while its rival Beijing Haohua Energy Resources Co increased 5.52 percent to 25.6 yuan per share.

Brokerages posted widespread gains with Shanxi Securities Co rising by the 10-percent daily limit to land at 9.11 yuan per share.