Huaneng Power International, the mainland’s largest power company, and Hong Kong-based electricity producer Hongkong Electric are among four companies shortlisted by the Singaporean government as potential bidders for sale of the city-state’s US$2 billion Tuas Power Station, the South China Morning Post, reported. Japanese trading house Marubeni Corp and Australian investment bank Macquarie are the other bidders being considered. Tuas accounts for 25% of Singapore’s total power generation capacity and had US$1.6 billion in revenue last year. Temasek, the investment arm of the Singapore government, said it expected to have the Tuas power station sold by March.