Coal India Ltd.(533278.BY), the world's largest coal producer, said Tuesday it may import 20 million metric tons of the dry fuel in the current fiscal year through March and mix it with its own stocks to bridge a supply shortage to the country's power sector.

Chairman Narsing Rao said Coal India has agreed to rework its draft supply agreement to increase the penalties it pays to power companies for not fulfilling contract obligations.

The company will pay 1.5%-40.0% of the value of the shortfall as penalty, he told reporters. Its current agreements allow for just 0.01%.