The directive, issued by the country's Central Electricity Regulatory Commission (CERC), orders all wind projects with a capacity of at least 10MW to forecast their generation for the next day in 15-minute blocks.
Fines, which will be paid to state utilities, will be imposed for missing forecasts by more than 30%.
India's wind farm operators have opposed the move, delaying its implementation for the past two years. They argue that it will raise costs on existing projects and deter future developments.
But Felicity Jones, policy analyst at GL Garrad Hassan, does not believe the accuracy target to be particularly onerous.
"Using a common international measure of forecast performance — as used in Denmark, Germany, the UK and the US — it is possible to achieve a typical accuracy of day-ahead forecasts in India of 12% mean absolute error as a percentage of the capacity of a wind farm," she wrote in Windpower Monthly last November.