Gautam Adani and others are accused in the New York indictment of paying Indian government officials $250 million to secure solar energy supply contracts.

Indian billionaire Gautam Adani and other executives were indicted in New York on Wednesday by US prosecutors for their alleged roles in a years-long, multi-billion-dollar bribery and fraud scheme involving plans to develop a major solar power plant.

Being associated with a renewable energy venture is seen as benign and purposeful for the wealthy. But for India's second-richest man its turned into a legal nightmare.