Tag: GHG emissions

RFS Has Only a Small Impact on GHG Emissions

For the second time in 3 years, the U.S. Government Accountability Office (GAO) has cast doubt on whether the federal Renewable Fuel Standard (RFS) is having any more than a negligible effect on U.S. emissions of greenhouse gases (GHGs).

Clean energy, green city, solar panels

Cities Take Action on Renewable Energy, Reduction of GHG Emissions

Hundreds of U.S. cities of all sizes are not waiting for the federal government to recommit to reducing greenhouse gas (GHG) emissions and regain its position as the world leader in stemming climate change. At an April 2, 2019, House hearing, the mayors of three of those cities told their stories of commitment to a […]

Environmental Protection Agency sign

Senators Look for Answers on Methane Proposal from EPA

Several federal lawmakers continue to press the EPA for information about the impact of its proposal (October 15, 2018, Federal Register (FR)) to weaken the Obama administration’s New Source Performance Standards (NSPS) governing air emissions from the oil and natural gas (O&G) sector (June 3, 2016, FR).

Transportation fuel oil gas

GHG Program in Oregon Found (Appropriately) Discriminatory

In a majority opinion, a panel of the U.S. Court of Appeals for the 9th Circuit found that Oregon state violated neither the dormant Interstate Commerce Clause nor a provision of the federal Clean Air Act (CAA) when it assigned a carbon intensity value to transportation fuels produced out of state and imported into Oregon, […]

Power plant

Massachusetts Supreme Court Affirms Power Sector GHG Regs

Shortly after the Trump EPA proposed to replace the Obama EPA’s Clean Power Plan with its more industry-friendly Affordable Clean Energy (ACE) rule, the Massachusetts Supreme Court went in the opposite direction by denying a petition to overturn a state regulation imposing a progressive cap on greenhouse gas (GHG) emissions for the power sector.

Hourly/Annual Emissions Tests and NSR Permits

The EPA’s proposed Affordable Clean Energy (ACE) rule (August 31, 2018, Federal Register (FR)) to regulate greenhouse gas (GHG) emissions from existing power plants includes a new approach to the Agency’s New Source Review (NSR) program.

GHG, vehicle emissions

Dissecting the Revocation of California’s CAA Waiver

The National Highway Traffic Safety Administration’s (NHTSA) and the EPA’s proposed amendments (August 24, 2018, Federal Register (FR)) to regulations governing corporate average fuel economy (CAFE) standards (NHTSA) and greenhouse gas (GHG) emissions (EPA) for model years (MYs) 2021–2026 passenger cars and light trucks will likely face legal challenges should the agencies promulgate final rules […]

GHG, vehicle emissions

California GHG Emissions Standards Would Be Rolled Back By EPA/NHTSA Proposal

In a joint press release, the EPA and the U.S. Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) announced a notice of proposed rulemaking (NPRM) for the Safer Affordable Fuel-Efficient (SAFE) Vehicles, which seeks to establish new 50-state fuel economy and tailpipe carbon dioxide (CO2) emissions standards. The proposed SAFE Vehicles rule would revise […]