Netjoy Holdings Limited — Capital/Financing Update 2010

Aug 5, 2010

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

This announcement is for information purposes only and does not constitute an invitation or offer to acquire, purchase or subscribe for securities of Huaneng Power International, Inc..

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Overseas Regulatory Announcement Announcement on Project Progress

This announcement is made pursuant to Rule 13.09(2) of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

Huaneng Power International, Inc. (the “Company”) announced that the gas co-generation expansion project of Huaneng Beijing Co-generation Power Plant (of which the Company owns 41% interests) has recently been approved by Beijing Municipal Commission of Development and Reform.

The gas co-generation expansion project of Beijing Co-generation Power Plant will construct one set of “two on one” F-grade gas and steam combined cycle generating unit with a power generation capacity of 923MW, heat supply capacity of 650MW and heat supply area of approximately 13,000,000 square metres, and high-standard denitrification, noise reduction, water treatment and other environmental protection facilities will be constructed concurrently. As the first project commencing construction among the four major cogeneration centres in Beijing, this project firstly introduced the most efficient world-class F-grade gas turbine in the PRC thus setting a new record of the maximum heat supply capacity, minimum power consumption for power generation and highest annual thermal efficiency for the same type of generating units in the PRC and attaining a leading and international class design standard in the PRC. The construction of this project will have an active demonstrating effect on the construction of subsequent gas co-generation centres in Beijing and will satisfy the heat demand of Beijing city, enhance energy supply safety and make a significant contribution to the optimization of the energy structure.

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The estimated total dynamic investment of this project is approximately RMB3.197 billion, of which 25% is project capital which shall be contributed by the Company, Beijing Jingneng International Energy Limited and China Hua Neng Group Hong Kong Limited according to the ratio of 41%, 34% and 25%, respectively. The remaining investment will be funded by bank loans.

The project does not constitute any transaction under Chapter 14 and 14A of the Listing Rules.

By Order of the Board Huaneng Power International, Inc. Gu Biquan Company Secretary

As at the date of this announcement, the directors of the Company are:

Cao Peixi Liu Jipeng (Executive Director) (Independent Non-executive Director) Huang Long Yu Ning (Non-executive Director) (Independent Non-executive Director) Wu Dawei Shao Shiwei (Non-executive Director) (Independent Non-executive Director) Huang Jian Zheng Jianchao (Non-executive Director) (Independent Non-executive Director) Liu Guoyue Wu Liansheng (Executive Director) (Independent Non-executive Director) Fan Xiaxia (Executive Director) Shan Qunying (Non-executive Director) Xu Zujian (Non-executive Director) Huang Mingyuan (Non-executive Director) Liu Shuyuan (Non-executive Director)

Beijing, the PRC 6 August 2010

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