## A proposal for a public ratings agency for green finance

The Biden administration has committed the United States to cutting its carbon emissions in half by 2030 and achieving net zero emissions by 2050. The International Renewable Energy Agency (IRENA) estimates that the global transition to a low-carbon future will require \$131 trillion in infrastructure investment by 2050. With the US share of global GDP and carbon emissions around 16 percent, a back-of-the-envelope calculation puts its gross financing needs at roughly \$21 trillion—or 100 percent of GDP over the next three decades. In other words: approximately 3.3 percent of GDP per annum in investment has to be financed to achieve Biden’s commitments. But the aggregate climate-related financing promised by the twin bills introduced by Biden is no more than \\$100 billion, or 0.5 percent of GDP per year over the next eight years. How is the rest going to be financed?