Gautam Adani

An Indian businessman who is one of the world's richest people has been indicted in the U.S. on charges he duped investors in a massive solar energy project in his home country by concealing that it was being facilitated by an alleged bribery scheme.

Deep in the desert along the border with Pakistan, India's most controversial billionaire is building the world's largest renewable energy park as he races to future-proof his coal-linked fortune.

Shares in the business empire of Asia's richest man Gautam Adani nosedived on Jan. 27, extending this week's losses to $45 billion, days after a U.S. investment firm claimed it had committed "brazen" corporate fraud.