SCOTUS

The U.S. Supreme Court on April 6 reinstated a Trump-era environmental rule that limited state and tribal roles in enforcing a section of the Clean Water Act (CWA) related to project certification. The order is a temporary triumph for eight states and three energy trade associations, including the National Hydropower Association (NHA). The high court’s […]

The U.S. Supreme Court is hearing arguments on a landmark case that could determine whether the Environmental Protection Agency (EPA) has the authority to broadly interpret the Clean Air Act (CAA) to establish carbon emission standards for coal, oil, and gas-fired power plants. Arguments in West Virginia v. Environmental Protection Agency (No. 20-1530) presented to […]

The U.S. Supreme Court unanimously reversed and remanded a rule the Environmental Protection Agency (EPA) and the U.S. Army Corps of Engineers rolled out in 2015 that asserts federal authority over small bodies of water with a broader definition of the statutory term, “waters of the U.S.” (WOTUS). In a ruling for National Association of […]

In the week since the highest court in the U.S. issued an unprecedented ruling to stay the Clean Power Plan—as at least two states suspended compliance efforts—the passing of Supreme Court Justice Antonin Scalia may have boosted the odds that the Obama administration’s efforts to stem power plant carbon emissions will pass judicial review. The […]

Following the D.C. Circuit’s denial of motions for stay, 26 states have petitioned the U.S. Supreme Court to immediately block the Environmental Protection Agency’s (EPA’s) contentious Clean Power Plan from taking effect. The January 26 application, directed to Chief Justice John Roberts Jr., notes that the states filed petitions for review of the carbon rule […]

The Environmental Protection Agency (EPA) will issue revised Mercury and Air Toxics Standards (MATS) and legally required cost-benefit analyses by April 15, 2016, court documents show. In an Aug. 10 motion filed with the D.C. Circuit for White Stallion Energy Center v. EPA (12-1100), the EPA said it intends to seek remand without vacatur (which […]

Editor’s note (Aug. 3): Adds compliance cost details, key changes The Environmental Protection Agency’s (EPA’s) final Clean Power Plan will seek to tamp down the nation’s carbon dioxide (CO2) emissions from the power sector by 32% from 2005 levels by 2030—about 9% more ambitious than its original proposal. The first-ever final national standards to limit […]

In a 5–4 decision announced on June 29, the U.S. Supreme Court overturned the Environmental Protection Agency’s (EPA’s) rules limiting mercury and other hazardous air pollutants released from power plants. In April 2014, the U.S. Court of Appeals for the D.C. Circuit upheld the Mercury and Air Toxics Standards (MATS), ruling in a 2–1 decision […]