Will Adani's $100bn loss hit India's green energy dreams?

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Two years ago, Indian Prime Minister Narendra Modi announced ambitious plans to make India a green energy colossus.

He pledged cutting emissions to net zero or becoming carbon neutral, meaning not adding to the amount of greenhouse gasses in the atmosphere by 2070. (Although its demand for power and emissions are lower than Western countries', India is the world's third largest emitter of greenhouse gasses.) Mr Modi also promised for India to get half of its energy from renewable resources by 2030, and by the same year to slash projected carbon emissions by a billion tonnes.

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One businessman who's key to Mr Modi's green energy plans is Gautam Adani, one of Asia's richest men who runs a sprawling port-to-energy conglomerate with seven publicly traded companies, including a renewable energy firm called Adani Green Energy. Mr Adani, already one of the world's largest solar players, plans to spend $70bn (£58bn) in green energy and become a global renewable player by 2030. This money is expected to be spent on boosting solar generation, making batteries and using wind energy and green hydrogen.