July 5, 2012. Delayed monsoon have reduced hydropower generation by up to 7% in the past 10 days because of lower availability of water, the country's top hydropower producer NHPC said. The drop in generation amounts to about 7-8 million units a day. Monsoon rainfall has been 31% below normal so far this season, slowing down the replenishment of depleted reservoirs. The delayed and below-normal rainfall has also raised power demand particularly for air-conditioning. NHPC also announced the commissioning of its 231-MW Chamera-III hydroelectric project in Himanchal Pradesh. All three units of the project have been put on commercial operation.