The Environmental Protection Agency proposed a policy Tuesday to limit greenhouse gas emissions from new power plants, GovExec reports.
The guidelines aim to reduce power plants’ reliance on coal, which accounts for around half of the U.S.’s power supply.
EPA Administrator Lisa Jackson suggested limiting new fossil-fuel power plants to 1,000 pounds of carbon per megawatt hour of energy produced, according to GovExec.
If passed, the regulations would initially affect new power plants and later target older facilities as they enter the licensing and permitting process.
The EPA is expected to submit new rules for existing power plants later this year, GovExec reports.