China raised electricity prices for the second time in two months, an unexpectedly quick move that underscores the problems the nation is facing in keeping its booming economy supplied with energy.

• 中国国家发展和改革委员会周二宣布上调批发电价，这是中国两个月来第二次上调电价，令人意外的频繁调价反映出中国正面临着能源供应制约经济快速增长的挑战。