https://www.scientificamerican.com/article/obama-emissions-rules-could-yield-300-billion-annually-by-2030/

The benefits of Obama-era rules to curb greenhouse gas emissions would greatly exceed the costs in the coming years, according to a new analysis.

Regulations designed to control emissions from power plants, oil production and motor vehicles could together lead to close to $300 billion in net benefits per year by 2030, according to the report by Columbia University’s Sabin Center for Climate Change Law.