HONG KONG (AFX-ASIA) – UBS Warburg said it has raised the 12-month target price for Huaneng Power International Inc to HK$8.60 from HK$8.40, following the company’s acquisition of a 25% interest in Shenzhen Energy Group for 2.39 billion yuan. Meanwhile, profit estimates for 2003 and 2004 have also been raised to 4.307 billion yuan and…