John Christensen, who chairs the Tax Justice Network, gave a great talk on equitable options to finance the necessary changes to hit carbon net zero. You can read it on https://www.taxjustice.net/wp-content/uploads/2020/03/Just-Transition-RICS-11-MAR-2020.pdf
there is a two part newsletter giving more details about these ideas , including methods of sustainable cost reporting (SCORE) of greenhouse gas emissions. https://www.taxjustice.net/wp-content/uploads/2020/03/TJF_2020_11-2_V3.pdf