HUANENG POWER INTERNATIONAL, INC. Announcement of Intention to Delist American Depositary Shares from the New York Stock Exchange

And Intention to Deregister and Terminate Reporting Obligations under the U.S. Securities Exchange Act

BEIJING, June 17, 2022 /PRNewswire/ -- Huaneng Power International, Inc. ("HPI", or the "Company") (NYSE: HNP; HKEx: 902; SSE: 600011) today announced that the Company has notified the New York Stock Exchange ("NYSE") on June 17, 2022 (Eastern Time in the U.S.) that it will apply for the voluntary delisting of its American depositary shares ("ADSs") from the NYSE and the deregistration of such ADSs and underlying overseas listed shares, par value RMB1.00 per share (the "H Shares"), under the U.S. Securities Exchange Act of 1934, as amended (the "Exchange Act"). The board of directors of the Company approved the delisting of its ADSs from NYSE and the deregistration of such ADSs and the underlying H Shares under the Exchange Act due to a number of considerations, including the limited trading volume of its ADSs relative to the worldwide trading volume of its H Shares, and the considerable administrative burden and costs of maintaining the listing of the ADSs on the NYSE, the registration of the ADSs and the underlying H Shares with the United States Securities and Exchange Commission (the "SEC") and complying with the periodic reporting and related obligations of the Exchange Act.

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