The construction interest is generally borne by the project company, but ultimately paid by the finance, and the interest during the construction period is paid by the government. Through repurchase, it will be returned to the project company year by year.

The loan interest during the construction period includes loans from domestic banks and other non-bank financial institutions, export credits, loans from foreign governments, loans from international commercial banks and bonds issued at home and abroad, which should be repaid during the construction period.