ACE Rule

The U.S. Environmental Protection Agency (EPA) in May 2023 published a proposed rule that would establish new source performance standards (NSPS) and existing source performance standards (ESPS) for greenhouse gas (GHG) emissions from new, modified, reconstructed, and existing fossil-fuel fired electric generating units (EGUs). COMMENTARY The proposed rule, which EPA plans to promulgate pursuant to […]

The Environmental Protection Agency (EPA) is readying a regulatory sweep targeting more stringent limits on traditional pollutants that could accelerate coal power plant closures. A coal trade group estimates that even without new rules, 86 GW of coal generation is slated to retire by 2030. While the U.S. Supreme Court in June curtailed the EPA’s […]

The U.S. Supreme Court has curbed the Environmental Protection Agency’s (EPA’s) options for limiting emissions of greenhouse gases (GHG) from power plants, an important environmental decision that could impact the federal government’s authority to enforce other regulations. The court in a 6-3 vote, with conservatives in the majority, on June 30 said the EPA does […]

A federal appeals court has vacated the Trump administration’s rollback of Obama-era greenhouse gas emission standards for power plants. A three-judge panel of the U.S. Court of Appeals for the District of Columbia on Jan. 19 said the measure intended to replace those standards, the Affordable Clean Energy (ACE) rule, “rested critically on a mistaken […]

As we get closer to the presidential inauguration, and with President-elect Biden’s announcement of his Cabinet picks for the Department of Energy (DOE), Environmental Protection Agency (EPA), and the Department of the Interior (Interior), we begin the inevitable hypothesizing about which “Day 1 actions” will be taken, which actions will be among the administration’s “100 […]

Legal challenges to the Trump administration’s Affordable Clean Energy (ACE) rule began in earnest April 17, as more than two dozen states and cities, along with several environmental activist groups, filed briefs with the U.S. Court of Appeals in Washington, D.C., seeking a rollback of power plant regulations that also have been decried by coal […]

A coalition of nine utility companies is suing the Trump administration over its plan to replace the Obama-era Clean Power Plan. New York-based Consolidated Edison said the Affordable Clean Energy, or ACE, rule undermines efforts the companies already have in place to cut greenhouse gas emissions from power generation. The companies, who call their group […]

A coalition of 22 states and seven local governments on Aug. 13 filed a lawsuit against the Environmental Protection Agency (EPA) over its Affordable Clean Energy (ACE) rule, which the Trump administration finalized in June to replace the Obama administration’s legacy Clean Power Plan (CPP).  Separately, 10 public interest groups filed a petition on Aug. […]

Coal power, which has seen a marked decline in the U.S., is necessary for reliability and energy affordability, and sustaining it could boost pollution technology exports and “improve lives while driving down emissions worldwide,” said Environmental Protection Agency (EPA) Administrator Andrew Wheeler in a speech last week. Wheeler made the remarks at a 90-minute event […]

The Environmental Protection Agency (EPA) has issued a final Affordable Clean Energy (ACE) rule to formally replace the Obama administration’s controversial Clean Power Plan (CPP).  Like the CPP, the June 19–issued final ACE rule will regulate greenhouse gases (GHGs), and it will be founded firmly on the agency’s 2009 Endangerment Finding. However, the ACE rule focuses […]

The Environmental Protection Agency (EPA) plans to take final action to repeal the Clean Power Plan in June 2019, a federal court filing shows. The agency told the D.C. Circuit—in a May 6 status report—review of the Obama-era rule that sets the first carbon dioxide limits for existing power plants “continues to be a high […]

The Senate on February 28 officially confirmed Andrew Wheeler to be administrator at the Environmental Protection Agency (EPA) on a 52–47 vote, mostly along party lines. The nomination of Wheeler, a former coal lobbyist, was controversial, with many lawmakers and environmentalists criticizing his ties to the coal industry.  Wheeler has held the role in an acting […]

The U.S. Environmental Protection Agency (EPA) suggests that if states fully implement the Affordable Clean Energy (ACE) rule—which it proposed in August 2018 to replace the 2015 Clean Power Plan—by 2025, U.S. power sector carbon dioxide emissions could be about 34% below 2005 levels. At the end of 2016, they had fallen 24%, and by the end […]

The Tennessee Valley Authority’s third coal plant conversion to gas combined cycle generation, at the venerable Allen plant near Memphis, Tennessee, created the most-efficient combined cycle plant in its

California Gov. Jerry Brown on September 10 signed into law a measure requiring the state to produce all its electricity from renewable sources by 2045. It’s a goal that also has been set by Hawaii and is being discussed by other states. Environmental groups and renewable energy advocates immediately praised Brown’s action. Utilities operating in […]

Seventeen states have asked the U.S. Court of Appeals for the D.C. Circuit to reject the Trump administration’s efforts to further delay the court’s decision on legal challenges to the Clean Power Plan. In a filing with the court on September 4, the attorneys general of California, Connecticut, Delaware, Hawaii, Illinois, Iowa, Maine, Maryland, Massachusetts, Minnesota, […]

The Trump administration has extended a potential lifeline to coal-fired power plants with its Affordable Clean Energy (ACE) rule. Now the debate is about how much the plan will actually help coal generation. Energy analysts and other industry experts who spoke with POWER on August 28 say the new rule, which would give individual states the […]

The Trump administration’s Affordable Clean Energy (ACE) rule announced August 21 calls for coal-fired power plants to meet state-designed performance standards, most notably focused on increases in heat rate and overall efficiency for individual generating stations. Energy experts speaking at the MEGA Symposium in Baltimore, Maryland, on August 22 agreed it’s a goal worth pursuing. […]

The Environmental Protection Agency’s (EPA’s) Affordable Clean Energy (ACE) rule is proposed to replace the 2015 Clean Power Plan—which the Supreme Court stayed in February 2016 and never went into effect. According to the EPA, the replacement is necessary because the Obama-era Clean Power Plan “exceeded the EPA’s authority.” However, like the Clean Power Plan, […]