1. Short title This Act may be cited as the Clean Economy Act of 2020 . 2. Net-zero greenhouse gas emissions by not later than 2050 (a) Definitions In this section: (1) Administrator The term Administrator means the Administrator of the Environmental Protection Agency. (2) Anthropogenic The term anthropogenic , with respect to greenhouse gas, means emissions and removals that are— (A) the direct result of human activities; or (B) the result of natural processes that have been affected by human activities. (3) Net-zero emissions The term net-zero emissions means that, on an annual basis with respect to the United States, the quantity of anthropogenic greenhouse gases emitted by sources does not exceed the quantity of anthropogenic sinks of greenhouse gases, as calculated by the Administrator using methodologies that are consistent with the recommendations in the document of the Intergovernmental Panel on Climate Change entitled 2019 Refinement to the 2006 Guidelines for National Greenhouse Gas Inventories (or any successor guidelines or refinements). (b) Plan for reduction of emissions The Administrator, acting pursuant to existing authorities under the Clean Air Act ( 42 U.S.C. 7401 et seq.) and other existing authorities of the Administrator, shall adopt and implement a plan— (1) to reduce greenhouse gas emissions from the United States that puts the United States on a pathway to achieve net-zero emissions by not later than 2050; and (2) to achieve the interim targets established pursuant to subsection (c)(1)(C). (c) Requirements (1) In general The plan under subsection (b) shall— (A) achieve rapid greenhouse gas emission reductions, based on the best available science, to protect public health and welfare from the effects of climate change; (B) be designed— (i) to build on and reinforce progress by States, units of local government, and the private sector to reduce greenhouse gas emissions; (ii) to maximize greenhouse gas emission reductions while minimizing economic costs