India has stepped up the use of coal to generate electricity in a bid to stop outages caused by lower hydroelectricity output, and as an increase in renewables is struggling to keep pace with record power demand.

It is unusual for India's electricity use to spike in August, when temperatures are lower due to the annual monsoon that runs between June and September. Demand typically peaks in May, when Indians crank up air conditioners to beat the heat, and industries operate without rain-related disruptions.

However, the driest August in more than a century has resulted in power generation surging to a record 162.7 billion kilowatt hours (units), a Reuters analysis of data from the federal grid operator Grid India showed.