New Delhi, July 7 -- Hydropower generation across key Asian markets fell sharply in June as weather-related disruptions reduced reservoir inflows, increasing reliance on coal and other flexible power sources to meet rising electricity demand.

Combined hydropower generation in Japan, South Korea, India, Bangladesh, Vietnam, the Philippines and Malaysia declined by about 13 average gigawatts (aGW) from a year earlier, according to an S&P Global Energy report released on Tuesday.

India and Vietnam accounted for most of the drop. Hydropower generation fell by 6.3 aGW in India and 4.6 aGW in Vietnam, together making up more than 80% of the regional decline.

Mint earlier reported that a weaker monsoon and the El Niño phenomenon could we...