2001 Interim Report Huaneng Power International, Inc. Interim Results Business Review for the First Half of the Year Prospects for the Second Half of the Year Operating Results Share Capital Structure Purchase, Sale or Redemption of Shares Shareholding of Major Shareholders Directors' and Supervisors' Right to Purchase Shares Dividends Major Events Changes in Directors, Supervisors and Management Code of Best Practice Legal Proceedings Documents for Inspection Auditors' Report Condensed Consolidated Balance Sheet (unaudited) Condensed Consolidated Income Statement (unaudited) Condensed Consolidated Statement of Changes in Shareholders' Equity (unaudited) Condensed Consolidated Statement of Cash Flows (unaudited) Notes to the Condensed Financial Statements (1) Notes to the Condensed Financial Statements (2)