(EnergyAsia, August 22, Wednesday) — NYSE-listed Huaneng Power International Inc said its first half net profit rose 32.7% to RMB2.875 billion for the period ended June 30, 2007. (US$1=RMB7.56).Its operating revenues increased by 16.7% to RMB23.144 billion over the same period.Earnings per share were RMB0.24, or RMB 9.6 for each American Depositary Share.The company said…