HUANENG POWER INTERNATIONAL, INC. DOMESTIC ELECTRICITY SOLD INCREASES BY 13.23% FOR THE YEAR OF 2021

BEIJING, Jan. 14, 2022 /PRNewswire/ -- Huaneng Power International, Inc. ("HPI", the "Company") (NYSE: HNP; HKEx: 902; SSE: 600011) today announced its electricity sales for the whole year of 2021.