Huaneng Power International (“Huaneng International”, stock code: 00902) will release its first-quarter 2026 financial results on the evening of 28 April 2026 and hold a global investor conference call the following day, 29 April 2026, from 16:00 to 17:30 Beijing Time.

The session will focus on the company’s operating performance and key financial indicators for the quarter. Questions of broad investor interest will be addressed within the limits of applicable disclosure regulations.

Director and President Liu Ancang, Chief Accountant and Board Secretary Wen Minggang, independent non-executive directors, other senior management members and department heads are expected to join the call.

Participation requires submission of a reply slip to hpi.invite@wsfg.hk by 09:00 Beijing Time on 27 April 2026. Registered investors will receive dial-in details and may send questions in advance to the same email address.

Audio materials from the call will be posted on the company’s website (www.hpi.com.cn) after the event. For further information, investors may contact Wonderful Sky Financial Group or Huaneng International at the telephone numbers provided in the announcement.