While global investment in clean energy technologies is still far below levels needed to reach net-zero greenhouse gas emissions by 2050, according to the International Energy Agency, massive profits await investors who do make early moves into clean energy. By 2030, in IEA’s net-zero scenario, the size of the global market for clean tech surpasses the value of the oil market, rising from $122 billion to $870 billion. That increase is driven primarily by explosive growth in the market for batteries to store energy for electric vehicles and the electric grid. By 2050, IEA projects that batteries alone could be worth as much as oil will be worth in 2030.

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